|| DeviceType | Optical Line Terminals |
|| DeviceName1 | LTP-8X, LTP-4X |
|| DocTitleAdditional | User manual, Issue 22 (02.11.2022) |
|| fwversion | 3.46.0 |

Terms and definitions

CBR — Constant bitrate

DBA — Dynamic bandwidth allocation

ERPS — Ethernet Ring Protection Switching

FTP — File Transfer Protocol

FW — Firmware

GPON — Gigabit PON

HSI — High Speed Internet

IGMP — Internet Group Management Protocol

IP — Internet protocol

MLD — Multicast Listener Discovery

OLT — Optical Line Terminal

ONT — Optical Network Terminal

ONU — Optical Network Unit

PCB — Printed Circuit Board

SLA — Service Level Agreement

SNTP — Simple Network time protocol

SNMP — Simple Network Management Protocol

SFP — Small Form-factor Pluggable

TFTP — Trivial File Transfer Protocol

URI — Uniform Resource Identifier

VEIP — Virtual Ethernet Interface Point

Notes and warnings

General information

Introduction

A GPON is a network of passive optical networks (PON) type. It is one of the most effective state-of-the-art solutions for the 'last mile' issue that significantly reduces the required amount of cable and provides data transfer with downstream rate up to 2.5 Gbps and upstream rate up to 1.25 Gbps. Being used in access networks, GPON-based solutions allow end users to have access to new services based on IP protocol in addition to more common ones.

The key GPON advantage is the use of one optical line terminal (OLT) for multiple optical network terminals (ONT). OLT converts Gigabit Ethernet and GPON interfaces and is used to connect a PON network with data communication networks of a higher level.

The range of OLT GPON equipment produced by Eltex comprises of LTP-4X/LTP-8X terminals with internal Ethernet switch with RSSI function and 4/8 GPON ports respectively.

This user manual describes purpose, main technical specifications, installation order, rules of configuration, monitoring, and software update for the devices.

Purpose

The LTP-8X/4X optical line terminal is designed to establish connection with upstream equipment and provide broadband access across passive optical networks. Ethernet connection is established through Gigabit uplink and 10GBASE-X interfaces, GPON interfaces are used to connect to optical networks. Each PON interface allows connection of up to 128 subscriber optical terminals through one fibre and supports dynamic bandwidth allocation (DBA).

The following services are provided to end users:

• voice communications;
• HDTV;
• VoIP;
• high-speed access to the Internet;
• IPTV;
• video-on-demand (VoD);
• video conferencing;
• online educational and entertainment programs.

The device supports the following functions:

• dynamic bandwidth allocation (DBA);
• support for quality assurance mechanisms (QoS), Strict priority + WRR, GPON ports prioritisation for different types of traffic according to 802.1p;
• security functions;
• ONT remote control, automatic detection of new ONTs;
• FEC errors correction;
• power measurement support for signals received from each ONT (RSSI)1;
• VLAN organisation (VLAN ID range: 0–4094);
• MAC address filtering, 16000 entries in the MAC table;
• support for IGMP snooping v1/2/3, IGMP proxy;
• support for DHCP snooping, DHCP relay agent;
• support for PPPoE IA;
• support for Jumbo Frames up to 2000 bytes (supported on NTU-1 and SFP-NTU-100).

Delivery package

The standard delivery package includes:

1. LTP-4X/8X optical line terminal;
2. Mounting set for 19'' rack;
3. RS-232 DB9(F) — DB9(F) console cable for LTP rev.B; RJ-45 — DB9(F) console cable for LTP rev.С and rev.D;
4. CD with User Manual and Quick Configuration Manual (optionally);
5. Power cable (if equipped with 220 V power module);
6. Passport.

Technical specifications

Table 1 — Main specifications of the line terminal

Compatible SFP transceivers

Correct and error-free operation of GPON interface requires exact parameters to be chosen and set for each transceiver type. This can be done only under laboratory conditions by the terminal vendor.  The following table lists SFP transceivers for which seamless terminal operation is guaranteed.

DDMI (Digital Diagnostic Monitoring Interface) provides information on transceiver parameters, such as temperature, supply voltage, etc. DDMI also measures the level of ONT signal (RSSI). All compatible transceivers support this function.

Table 2 — List of compatible SFP transceivers

Design

Front panel

The devices have a metal housing available for 19” form-factor rack mount; housing size is 1U. The front panel layout is shown in the figures below. Tables 3 and 4 list connectors, LEDs and controls located on the front panel of the terminal.

Figure 1 — LTP-4X rev.B front panel layout

Figure 2 — LTP-8X rev.B front panel layout

Figure 3 – LTP-4X rev.C/rev.D front panel layout 

 
Figure 4 — LTP-8X rev.C/rev.D front panel layout

Table 3 — Description of the connectors, LEDs, and controls located on the front panel of LTP-4X/8X rev.B

Table 4 — Description of the connectors, LEDs, and controls located on the front panel of LTP-4X/8X rev.C, LTP-4X/8X rev.D

Rear panel

The rear panel layout of the device is depicted in Fig. 5, 6, 7.

Table below lists rear panel connectors. 

Figure 5 — LTP-4X/8X (DC) rear panel layout

Figure 6 — LTP-4X/8X (AC) rear panel layout

Figure 7 — Rear panel layout of LTP-4X/8X rev.C, LTP-4X/8X rev.D with two power modules

Table 5 — Rear panel connectors description

Light indication 

The indicators located on the front panel show the status of the terminal. Indicator states are listed in Tables 6 and 7.

Table 6 — LTP-4X/8X rev.B status light indication

Table 7 — LTP-4X/8X rev.C/rev.D status light indication

Temperature sensors

2 temperature sensors are used to measure temperature inside the terminal case.

Figure below shows the sensor location on PCB.

Figure 8 — Temperature sensors allocation

Ventilation system

There are ventilation openings on the device rear, front and side panels that serve to remove heat. The rear panel has two ventilation units installed (Figure 5, Figure 6 and Figure 7).

Air flows in through the perforated front and side panels, circulates through all internal components, cools them down, and then it is removed by fans located on the perforated rear panel.

The device contains 2 fans. The ventilation units are detachable. The procedure for assembly and dismantling is described in Ventilation Units Replacement.

Safety rules and installation procedure

This chapter describes how to install the terminal in a rack and connect it to the power supply.

Safety requirements

General requirements
Any operations with the equipment should comply to the "Safety Regulations for Operation of Consumer's Electrical Installations".

1. Before operating the device, all engineers should undergo special training.
2. The terminal should be connected only to properly functioning supplementary equipment.
3. The device could be permanently used under the following conditions:
   • ambient temperature from -5 to +40 °C;
   • relative humidity up to 80 % at +25 °C;
   • atmosphere pressure from 6.0×10⁴ to 10.7×10⁴ Pa (from 450 to 800 mm Hg).
4. The terminal should not be exposed to mechanical shock, vibration, smoke, dust, water, and chemicals.
5. To avoid components overheating which may result in device malfunction, do not block air vents or place objects on the equipment.

Electrical safety requirements

1. Prior to connecting the device to a power source, ensure that the equipment case is grounded with an earth bonding point. The earthing wire should be securely connected to the earth bonding point. The resistance between the earth bonding point and earthing busbar should be less than 0.1 Ω. Any PC and measurement instruments should be properly grounded prior to their connection to the terminal. The potential difference between the equipment case and the cases of the instruments should be less than 1 V.
2. Prior to turning the device on, ensure that all cables are undamaged and securely connected.
3. Make sure the device is off, when installing or removing the case.
4. Power modules of LTP-X rev.B should be replaced only when the device is powered off. Follow the procedure in Terminal installation. Power modules of LTP-X rev.C/rev.D terminals can be installed and removed without powering the device off.
5. Follow the instructions given in SFP transceivers replacement to install or remove SFP transceivers. This operation does not require the terminal to be turned off.

Terminal installation

Check the device for visible mechanical damage before installing and turning it on. In case of any damage, stop the installation, fill in a corresponding document and contact your supplier. If the terminal was exposed to low temperatures for a long time before installation, leave it for 2 hours at ambient temperature prior to operation. If the device was exposed to high humidity for a long time, leave it for at least 12 hours in normal conditions prior to turning it on.

Support brackets mounting
The delivery package includes support brackets for rack installation and mounting screws to fix the terminal case on the brackets. To install the support brackets:

• Step 1. Align four mounting holes in the support bracket with the corresponding holes in the side panel of the device.
• Step 2. Use a screwdriver to screw the support bracket to the case.
• Step 3. Repeat steps 1 and 2 for the second support bracket.

Figure 9 — Support brackets mounting

Terminal rack installation
To install the terminal to the rack:

• Step 1. Attach the terminal to the vertical guides of the rack.
• Step 2. Align mounting holes in the support bracket with the corresponding holes in the rack guides. Use the holes of the same level on both sides of the guides to ensure the device horizontal installation.
• Step 3. Use a screwdriver to screw the terminal to the rack. 

Figure 10 — Device rack installation

The terminal is horizontally ventilated. The side panels have air vents. Do not block the air vents to avoid components overheating and subsequent terminal malfunction.

Power module installation

Depending on power supply requirements, the LTP-4X/8X rev.B terminals can be supplemented with either an AC power module, 220 V, 50 Hz, or a DC power module, 48 V. Location of the power module is shown in Figure 11.

Figure 11 — Power module installation

The LTP-4X rev.C/rev.D and LTP-8X rev.C/rev.D terminals can use one or two power modules. The second power module installation is necessary when greater reliability is required. In case of using two power modules, it is allowed to use different power plants for supplying (with different voltage).

Figure 12 — Power module installation for LTP rev.C/rev.D

From the electric point of view, both places for power module installation are identical. In the context of device operation, the power module located closer to the edge is considered as the main module, and the one closer to the centre — as the backup module. Power modules can be inserted and removed without powering the device off. When additional power module is inserted or removed, the terminal continues operation without reboot.
To install a power module:

• Step 1. Install the power module into the socket shown in Fig. 11 or Fig. 12.
• Step 2. Screw the module to the case.
• Step 3. Follow the instructions in Terminal installation to power on.

The device installation order:

• Step 1. Mount the device. In case of installation to a 19" form-factor rack, mount the support brackets from the delivery package to the rack.
• Step 2. Ground the case of the device. This should be done prior to connecting the device to the power supply. An insulated multiconductor wire should be used for earthing. The device grounding process and the earthing wire section should comply with Electric Installation Code. The earth bonding point is located on the rear panel, see Figure 5, Figure 6 and Figure 7.
• Step 3. If you intend to connect a PC or another device to the switch console port, the device must be properly grounded as well.
• Step 4. Connect the power supply cable to the device.
• Step 5. Turn the device on and check the front panel LEDs to make sure the terminal is in normal operating conditions.

Getting started with the terminal

Connecting to the terminal CLI

This chapter describes various connection methods for Command Line Interface (CLI) of the terminal.

A serial port (hereafter — COM port) is recommended to use for the initial configuration of the terminal.

Connecting to CLI via COM port

This type of connection requires PC either to have an integrated COM port or to be supplied with an USB-COM adapter cable. The PC should also have a terminal program installed, e. g. Hyperterminal.

• Step 1. Use the null modem cable from the delivery package to connect the console port of the terminal to the PC COM port as shown in figure below. 

Figure 13 — Connecting the terminal to a PC via COM port

• Step 2. Launch the terminal program and create a new connection. Select the corresponding COM port in the Connect to drop-down list. Assign the port settings according to the table below. Click <OK>.
  Table 8 — Port specifications

  Parameter	Value
  Speed	115200
  Data bits	8
  Parity	No
  Stop bits	1
  Flow control	None

  
  

• Step 3. Press <Enter>. Log into the terminal CLI.

  Factory authorization settings:  login: admin, password: password.

  
  

  ******************************************** * Optical line terminal LTP-8X rev.D * ******************************************** LTP-8X login: admin Password: ******** Eltex LTP-8X-rev.D software version 3.40.0 build 2358 on 10.12.2020 15:32 Technical support: https://eltex-co.ru/support Mon Dec 28 10:56:29 LOCAL 2020 LTP-8X#

  
  

Connecting to CLI via Telnet protocol

The Telnet protocol connection is more universal than the connection via COM port. Connection to CLI can be established directly at the terminal location or via an IP network with the help of a remote desktop.

This section considers direct connection to CLI at the terminal location. Remote connection is similar, but requires changes in the terminal IP address that will be considered in detail in the Network Settings section.

In order to be connected to the terminal, a PC should have a Network Interface Card (NIC). Additionally you will need a network cable (Patching Cord RJ-45) of the required length, as it is not included in the
terminal delivery package.

• Step 1. Connect one end of the network cable to any "GE Port" or "Combo GE" port of the terminal. Connect another end to NIC on the PC as shown in the figure below.

Figure 14 — Connecting the terminal to a PC via network cable

• Step 2. Assign IP settings for network connections. Set 192.168.1.1 as an IP address and 255.255.255.0 as a subnet mask.

Figure 15 — Network connection configuration

• Step 3. On the PC, click Start > Run. Enter the telnet command and the terminal's IP address. The factory setting for the IP address is 192.168.1.2. Click <OK>.

Figure 16 — Telnet client startup

• Step 4. Log into the terminal CLI.

  Factory authorization settings: login: admin, password: password.

  
  

  Trying 192.168.1.2... Connected to 192.168.1.2. Escape character is ’^]’. ******************************************** * Optical line terminal LTP-8X rev.D * ******************************************** login: admin Password:******** Eltex LTP-8X-rev.D software version 3.40.0 build 2358 on 10.12.2020 15:32 Technical support: https://eltex-co.ru/support Mon Dec 28 10:56:29 LOCAL 2020

  
  

Connecting to CLI via Secure Shell protocol

Secure Shell connection (SSH) has functionality similar to the Telnet protocol. However, as opposed to Telnet, Secure Shell encrypts all traffic data, including passwords. This enables secure remote connection via public IP networks.

This section considers direct connection to CLI at the terminal location. Remote connection is similar, but requires changes in the terminal IP address that will be considered in detail in the Network Settings section.

In order to be connected to the terminal, a PC should have a Network Interface Card (NIC). The PC should have an SSH client installed, e. g. PuTTY. Additionally you will need a network cable (Patching Cord RJ-45) of the required length, as it is not included in the terminal delivery package.

• Step 1. Perform steps 1 and 2 from the Connecting to CLI via COM port section.
• Step 2. Run PuTTY. Enter IP address of the terminal. The factory setting for the IP address is 192.168.1.2. Select port 22 and SSH protocol type. Click <Open>.

Figure 17 — SSH client startup

• Step 3. Log into the terminal CLI. Factory authorization settings:
  login: admin, password: password.

  login: admin Password: ******** Eltex LTP-8X-rev.D software version 3.40.0 build 2358 on 10.12.2020 15:32 Technical support: https://eltex-co.ru/support Mon Dec 28 10:56:29 LOCAL 2020 LTP-8X#

  

Getting started with terminal CLI

CLI is the main means of communication between user and the terminal. This chapter considers general operations in CLI: commands grouping, automatic code completion, and history.

CLI views hierarchy

Views are used in the terminal CLI to group commands and optimize their length.

Figure 18 shows a graphic chart of main views and the commands to switch between them.

 
Figure 18 — CLI mode hierarchy

• The Top view includes general commands, which refer to the device in general. For example: view terminal parameters, firmware update, reboot, etc.;
• The Switch configure view groups commands related to the switch: VLAN, GE interfaces, LACP and others;
• The Configure view is a list of terminal configuration commands. E.g. user management, services configuration, GPON interface and ONT configuration, profile configuration, etc.

Figure 19 — Switch view hierarchy

 
Figure 20 — Configure view hierarchy

Figure 20 shows the Configure view, which consists of four parts:

• The GPON-port view is used to configure GPON interfaces;
• The ONT view is used to configure the ONT;
• ONT configuration templates are modified in the ONT template view;
• The profile of the terminal configuration is configured in the Profile view.

CLI hotkeys

In order to speed up the operations with the command line, the following hotkeys have been added:

CLI automatic command completion

In order to make work with CLI faster and easier, an automatic command completion is implemented. A good knowledge of CLI command system allows user to work with CLI as fast as with graphical interface.

For example, enter the ex command in the Top view and press <Tab>.

LTP-8X# ex<Tab> 
LTP-8X# exit

As this view has only one command with the ex prefix, CLI automatically completes it.

If there are several commands with this prefix, CLI shows hints with possible options.

LTP-8X# co<Tab> 
commit configure copy 
LTP-8X# con<Tab> 
LTP-8X# configure

CLI command history

Sometimes it might be necessary to execute the same set of operations several times. To make the work with repeating commands easier, the terminal CLI keeps the command history.

The list of previously entered commands can be displayed by using the show history command.

LTP-8X# show history 
Last CLI commands: 
show version 
configure terminal 
exit 
show history
LTP-8X#

Use the <Up> and <Down> cursor keys to scroll the command history and the <Enter> key to execute the selected command.

LTP-8X# <Up> 
LTP-8X# show management <Up> 
LTP-8X# switch <Up> 
LTP-8X# exit <Up> 
LTP-8X# show uptime <Enter> 
up 1 day, 23:44

Group operations

Group operations can be performed on such terminal configuration objects as interfaces and ONT. It is especially convenient, when you have to apply the same actions to multiple objects.

To perform a group operation, select the range of object IDs instead of one object ID. This feature is supported by a majority of CLI commands.

For example, enable fec for all ONTs in a certain channel.

LTP-8X(config)# interface ont 0/0-127 
LTP-8X(config)(if-ont-0/0-127)# fec

Or view the list of active ones in the first 4 GPON channels.

LTP-8X# show interface ont 0-3 ont online 

GPON-port 0 has no online ONTs
GPON-port 1 has no online ONTs
GPON-port 2 has no online ONTs
GPON-port 3 has no online ONTs

Total ONT count: 0

Configuring the terminal

Terminal configuration

A collection of all terminal settings is referred to as configuration. This chapter provides information on the parts which configuration consists of. It also defines lifecycle of configuration and describes main operations, which can be performed.

Configuration structure

The terminal configuration can be conventionally divided into 3 parts. Figure below shows the configuration structure.

 
Figure 21 — Terminal configuration structure

System is a general system part. This group includes such settings as: network, service settings, user table, etc.
Switch represents a switch configuration. This group includes configuration parameters for Ethernet interfaces of the front panel, as well as VLAN settings.
GPON contains 5 subparts:

• OLT — GPON OLT and GPON interface settings;
• OLT profiles — OLT profile part consists of address table profiles, VLAN profiles, DHCP RA and PPPoE IA profiles;
• ONT — ONT configuration base;
• ONT templates — ONT templates;
• ONT profiles — ONT profiles.

Configuration lifecycle

The terminal configuration may have the following states:

• RUNNING— active configuration. It refers to the current configuration of the terminal;
• CANDIDATE— an edited configuration;
• NVRAM — a configuration stored in non-volatile memory. This configuration will be used as RUNNING after the device is loaded.

The RUNNING configuration is loaded to a new CLI session and becomes available for review (CANDIDATE). After changing the configuration (CANDIDATE) in the CLI session, user can either enter the commit command to accept the changes or use the rollback command to discard the changes and apply the current (RUNNING) configuration. The save command saves the RUNNING configuration into NVRAM of the terminal.
Figure below shows a chart of configuration lifecycle.

Figure 22 — Configuration lifecycle of the terminal diagram

Configuration autosave

In some cases, for example, when several operators are working on the terminal or the terminal is automatically configured through OSS/BSS, it may be convenient to organize a centralized saving of the configuration into NVRAM at a specified time or at a specified time interval. The terminal allows this with the help of a configuration autosave mechanism.

For daily autosave of the configuration, define a time when autosave should be implemented.

LTP-8X(config)# config autosave hour 3 minute 44

For autosave at specified time intervals, define the interval in seconds.

LTP-8X(config)# config autosave period 3600

Check the entered data by using the do show config command.

LTP-4X(config)# do show config 
	Config: 
		Daily autosave: at 03:44 
		Periodic autosave: every 3600 seconds 
	   LTP-4X(config)#

For disabling a mode, use the no command.

LTP-4X(config)# no config autosave hour 
LTP-4X(config)# no config autosave period

Apply the changes.

LTP-8X(config)# do commit

Creating a configuration backup

Configuration backups allow the terminal operation to be quickly restored after abnormal situations or replacement. Manual or triggered (on events) creation of backups is recommended at a regular basis.

Terminal configuration is uploaded to a TFTP server which is available in the management network. The copy command is used to upload the data. Pass the uploaded terminal configuration fs://config and destination URI as parameters.

LTP-8X# copy fs://config tftp://192.168.1.1/config 
Upload backup file to TFTP-server..

  Configure a triggered upload to create backups automatically.

• Step 1. Go to the configure view and select the URI of the configuration backup.

  LTP-8X# configure terminal LTP-8X(config)# backup uri tftp://192.168.1.1/config

  
  

• Step 2. The terminal can be adjusted to upload configuration every time the configuration is saved if necessary.

  LTP-8X(config)# backup on save

  
  

• Step 3. The terminal can be adjusted to use a timer for configuration upload if necessary. In this case, additionally set the timer period in seconds.

  LTP-8X(config)# backup on timer LTP-8X(config)# backup timer period 3600

  
  

• Step 4. Check the entered data by using the do show backup command. 
  

  LTP-8X(config)# do show backup Tftp: Backup on conf save: enabled Backup on timer: enabled Backup on timer period: 3600 Backup uri: ’tftp://192.168.1.1/config’

  

• Step 5. Apply the changes. 
  

  LTP-8X(config)# do commit

  
  

Configuration restore

The terminal configuration is restored from the TFTP/FTP/HTTP server which is available in the management network. The copy command is used to restore the data. Define source URI as parameter and fs://config as restored configuration.

LTP-8X# copy tftp://10.0.105.1/config fs://config 
	Download file from TFTP-server.. 
	Reading of the configuration file.. 
	Configuration have been successfully restored (all not saved changes was lost)

Configuration reset

To reset a terminal configuration to factory settings, use the default command.

LTP-8X# default 
	Do you really want to set up default configuration? (y/n) y 
	Configuration have been reseted to default. 

	Terminal will be reloaded.

Network settings

This chapter describes adjustment of network settings for the terminal. Adjusting network settings enables remote control and integration with OSS/BSS systems.

Network parameters configuration

It is recommended to adjust network settings via COM port connection. This will prevent issues with connection loss upstream the terminal being adjusted. Be very careful when using remote adjustment.

• Step 1. Use the show management command to view the current network settings.

  LTP-8X# show management Network: Hostname: ’LTP-8X’ Ipaddr: 192.168.1.2 Netmask: 255.255.255.0 Vlan management: 1 Gateway: 0.0.0.0 Vlan prio: 7 Dscp: 63 Additional vlan: <list is empty>

  
  

• Step 2. Switch to the configure view. Set the terminal name by using the hostname command.

  LTP-8X# configure terminal LTP-8X(config)# hostname LTP-8X-1

  
  

• Step 3. Set the terminal IP address by using the management ip command.

  LTP-8X(config)# management ip 10.0.0.1

  
  

• Step 4. Set the subnet mask by using the management mask command.

  LTP-8X(config)# management mask 255.0.0.0

  
  

• Step 5. Set the default gateway by using the management gateway command.

  LTP-8X(config)# management gateway 10.0.0.254

  
  

• Step 6. Set the management VLAN of the terminal by using the management vid command if necessary. Use the management cos command to set the P-bit parameter for the management VLAN.

  LTP-8X(config)# management vid 9 LTP-8X(config)# management cos 5

  
  

  Proper operation of the inband management function requires VLAN adjustment in the switch view as described in VLAN configuration.

  
  

• Step 7. Set MAC address aging time by using the gpon network mac-age-time command.

  Pass the time in seconds as a parameter.

  LTP-8X(config)# gpon network mac-age-time 7200

  
  

• Step 8. The network settings will change as soon as the configuration is applied. No terminal reboot is needed.

  LTP-8X(config)# do commit

  

User management

This chapter is devoted to management of the terminal users.

For security reasons, there is a strictly defined set of permissions, which can be delegated to terminal users. For these purposes, each user gets his own level of privileges. Level 0 corresponds to a minimum set of permissions, Level 15 — to a maximum set of permissions.

CLI commands are ranked by the level of privileges. Level 0 commands are available to all users. Level 15 commands are available only to Level 15 users. Thus, the level of commands available to a user does not exceed the user's level.

The levels of privileges can be modified as required.

• Step 1. Check the current settings of privileges by using the show privileges command.

  LTP-8X# show privileges Level Privileges 0 !, exit 1 view-ont 2 ont-operation 3 view-ont, ont-operation 4 view-ont, config-ont ont-operation 5 view-gpon, view-ont view-ont-profile, ont-operation 6 view-gpon, view-ont view-ont-profile, config-gpon ont-operation, config-ont-profile 7 view-switch, view-gpon view-ont, view-ont-profile view-switch-interfaces 8 view-switch, view-gpon view-ont, view-ont-profile view-switch-interfaces, config-switch config-switch-interfaces

  
  

  9 view-switch, view-gpon view-ont, view-ont-profile view-switch-interfaces, config-switch config-gpon, config-ont ont-operation, config-ont-profile config-switch-interfaces 10 view-switch, view-alarm view-system, view-general view-gpon, view-ont view-ont-profile, view-switch-interfaces 11 view-switch, view-alarm view-system, view-general view-gpon, view-ont view-ont-profile, view-switch-interfaces config-alarm, config-system config-general 12 view-switch, view-alarm view-system, view-general view-gpon, view-ont view-ont-profile, view-switch-interfaces config-switch, config-alarm config-system, config-general config-switch-interfaces 13 view-gpon, view-ont view-ont-profile 14 — 15 view-switch, view-alarm view-system, view-general view-gpon, view-ont view-ont-profile, view-switch-interfaces config-switch, config-alarm config-system, config-general config-gpon, config-ont ont-operation, config-ont-profile config-switch-interfaces

  
  

• Step 2. Switch to the configure view. Set the required permissions corresponding to the level by using the privilege command, e. g. set permissions allowing Level 1 to view configuration of the internal switch.

  LTP-8X# configure terminal LTP-8X(config)# privilege 1 view-switch

  
  

• Step 3. Settings of privileges will be applied immediately. No terminal reboot is needed.

  LTP-8X(config)# do commit

  The list of operations and the default levels are shown in the table below.

  Table 9 — Permissions and the required level of privileges

  Level	Privileges
  0	!, exit
  1	view-ont
  2	ont-operation
  3	view-ont, ont-operation
  4	view-ont, config-ont, ont-operation
  5	view-gpon, view-ont, view-ont-profile, ont-operation
  6	view-gpon, view-ont, view-ont-profile, config-gpon, ont-operation, config-ont-profile
  7	view-switch, view-gpon, view-ont, view-ont-profile, view-switch-interfaces
  8	view-switch, view-gpon, view-ont, view-ont-profile, view-switch-interfaces, config-switch, config-switch-interfaces
  9	view-switch, view-gpon, view-ont, view-ont-profile, view-switch-interfaces, config-switch, config-gpon, config-ont, ont-operation, config-ont-profile, config-switch-interfaces
  10	view-switch, view-alarm, view-system, view-general, view-gpon, view-ont, view-ont-profile, view-switch-interfaces,
  11	view-switch, view-alarm, view-system, view-general, view-gpon, view-ont, view-ont-profile, view-switch-interfaces, config-alarm, config-system, config-general
  12	view-switch, view-alarm, view-system, view-general, view-gpon, view-ont, view-ont-profile, view-switch-interfaces, config-switch, config-alarm, config-system, config-general, config-switch-interfaces
  13	view-gpon, view-ont, view-ont-profile
  14	—
  15	view-switch, view-alarm, view-system, view-general, view-gpon, view-ont, view-ont-profile, view-switch-interfaces, config-switch, config-alarm, config-system, config-general, config-gpon, config-ont, ont-operation, config-ont-profileconfig-switch-interfaces

  
  

User list preview

To view the list of terminal users, enter the show users config command.

LTP-8X(config)# do show users config 
    ##                Name      Privilege
     1                root           15
     2               admin           15
     3              remote           15

The admin, root and remote users always exist and cannot be deleted or duplicated. The terminal supports up to 16 users.

Adding a new user

In order to operate effectively and safely, the terminal, as a rule, requires one or several additional users. To add a new user, enter the user command in the configure view.

LTP-8X(config)# user operator
LTP-8X(config)# do show users config 
    ##                Name      Privilege
     1                root           15
     2               admin           15
     3              remote           15
     4            operator            0
LTP-8X(config)#

Pass the name of the new user to the user command as a parameter. The name should not be longer than 32 characters. The name should not contain special characters.

Changing user password

To change user password, enter the user command. Pass the user name and a new password as parameters.

LTP-8X(config)# user operator password newpassword

The password should not be longer than 31 characters and shorter than 8 characters. If the password contains a space, use quotations for the password.

Viewing and changing user access rights

To manage user access rights, a user priority system is implemented. A newly created user is granted with a minimal set of permissions.

LTP-8X(config)# user operator
LTP-8X(config)# do show users config 
    ##                Name      Privilege
     1                root           15
     2               admin           15
     3              remote           15
     4            operator            0
LTP-8X(config)#

To change the user priority level, enter the user command. Pass the user name and a new priority as parameters.

LTP-8X(config)# user operator priviledge 15
LTP-8X(config)# do show users config 
    ##                Name      Privilege
     1                root           15
     2               admin           15
     3              remote           15
     4            operator           15
LTP-8X(config)#

Deleting a user

To delete a user, enter the no user command in the configure view. Pass the user name as a parameter.

LTP-8X# configure terminal 
LTP-8X(config)# no user operator

ААА configuration

This chapter describes configuring of services and protocols related to authentication, authorization and accounting.

LTP-X supports radius and tacacs+ AAA protocols. Below is a table of the functionality of these protocols.

Table 10 — Permissions and the required level of privileges

Configuring servers

The principles of servers configuration are common for supported protocols. You can configure an IP address, key, response timeout and a data exchange port for each server. You can set up to 3 servers for the RADIUS. The LTP will apply to the servers according to their priorities. If the priority is not set, the 0 priority (the highest) will be used by default.

• Step 1. Configure IP address of radius/tacacs+ server.

  LTP-8X# configure terminal LTP-8X(config)# radius-server host 10.10.10.1 priority 0 LTP-8X(config)# radius-server host 10.10.10.2 priority 1 LTP-8X(config)# radius-server host 10.10.10.3 priority 2 LTP-8X(config)# tacacs-server host 10.10.10.4

  
  

• Step 2. Define an encryption key used while data exchange with the server.

  LTP-8X(config)# radius-server key 12345678-r0 LTP-8X(config)# radius-server key 12345678-r1 priority 1 LTP-8X(config)# radius-server key 12345678-r2 priority 2 LTP-8X(config)# tacacs-server key 12345678

  

• Step 3. Define server response timeout.

  LTP-8X(config)# radius-server timeout 3 LTP-8X(config)# radius-server timeout 3 priority 1 LTP-8X(config)# radius-server timeout 3 priority 2 LTP-8X(config)# tacacs-server timeout 3

  
  

• Step 4. Define a port for data exchange with the server (if necessary). 
  

  LTP-8X(config)# radius-server port 50005 LTP-8X(config)# radius-server port 50006 priority 1 LTP-8X(config)# radius-server port 50007 priority 2 LTP-8X(config)# tacacs-server port 50008

  
  

• Step 5. Apply the changes.
  

  LTP-8X(config)# do commit

  
  

AAA methods configuration

By default, every AAA function is implemented locally — local user data base is used for authentication and authorization, accounting via a remote server is disabled.

For using of configured in previous steps servers, define a method of a function performing.

• Step 1. Select an authentication method.

  LTP-8X# configure terminal LTP-8X(config)# aaa authentication radius

  
  

• Step 2. Select an authorization method.

  LTP-8X# configure terminal  LTP-8X(config)# aaa authorization tacacs+

  
  

• Step 3. Select a CLI session start/stop accounting method.

  LTP-8X# configure terminal LTP-8X(config)# aaa accounting start-stop radius

  
  

• Step 4. Select a method of commands accounting.
  

  LTP-8X# configure terminal LTP-8X(config)# aaa accounting commands tacacs+

  

• Step 5. Apply the changes.
  

  LTP-8X(config)# do commit

  In order to disable a function, use the no command.

  LTP-8X# configure terminal LTP-8X(config)# no aaa accounting commands

  
  

Services configuration

This chapter describes configuration of integrated terminal services.

SNMPD configuration

To work with the Eltex.EMS management system, the terminal should be configured to work with Simple Network Management Protocol (SNMP).

• Step 1. Switch to the configure view.

  LTP-8X# configure terminal

  
  

• Step 2. Enable the SNMP agent of the terminal by using the snmp enable command.

  LTP-8X(config)# ip snmp enable

  
  

• Step 3. Enable ACL check by using the snmp access-control command if necessary. Add the record into the whitelist by using the snmp allow command. Pass the IP address of the host which will be used to connect to the SNMP agent, as a parameter.

  LTP-8X(config)# ip snmp access-control LTP-8X(config)# ip snmp allow ip 192.168.1.13

  
  

• Step 4. Configure SNMP trap replication to allow the management system to receive the traps. For example, add 2 replicators and specify to send v2 SNMP traps to 192.168.1.13 and v1 traps to 192.168.1.113. To do this, use the ip snmp traps command. 
  

  It is possible to configure several receivers of SNMP traps of the same version.

  
  

  LTP-8X(config)# ip snmp traps 192.168.1.13 type v2 LTP-8X(config)# ip snmp traps 192.168.1.113 type v1

  

• Step 5. Check the entered data by using the show ip snmp command.

  LTP-8X(config)# do show ip snmp Snmp: Enabled: true Access control: false Allow ip: <list is empty> Traps [0]: Type: v2 Ipaddr: 192.168.1.13 Traps [1]: Type: v1 Ipaddr: 192.168.1.113 Version: v2 Community read-only [0]: 'QwYva0dvS3N' Community read-only [1]: 'QwYva0dvS3N' Community read-only [2]: 'QwYva0dvS3N' Community read-write [0]: 'LQtfx9v3m9+qA==' Community read-write [1]: 'LQtfx9v3m9+qA==' Community read-write [2]: 'LQtfx9v3m9+qA==' Trap community: '9qXUEDwUMAg' Location: 'admin' Contact: 'admin' Alias: <for showing use separate command> EngineID: 0x6C2A20B42CB28232FABEA8EE19 Users: <for showing use separate command>

  
  

• Step 6. The settings of the SNMP agent change as soon as the configuration is applied.

  No terminal reboot is needed.

  LTP-8X(config)# do commit

  
  

You need to configure users to operate with SNMPv3. 

• Step 1. Set the version of SNMP agent to 3.

  LTP-8X(config)# ip snmp version v3

  
  

• Step 2. Add users and set the privilege levels.

  LTP-8X(config)# ip snmp user "rwuser" auth-password "rwpass" enc-password "rwencr" access rw LTP-8X(config)# ip snmp user "rouser" auth-password "ropass" enc-password "roencr" access ro

  

• Step 3. Check the configuration.

  LTP-8X(config)# do show ip snmp users SNMP users ~~~~~~~~~~ User name permissions -------------------- --------------- rwuser read-write rouser read-only 2 SNMP users.

  
  

NTPD configuration

The terminal has no integrated real-time clocks with a battery. For the events in system log to show correct time and for automated operations to be performed in time, time synchronisation should be adjusted with the help of the NTP protocol.

• Step 1. Switch to the configure view.

  LTP-8X# configure terminal

  
  

• Step 2. Enable time synchronisation by using the ip ntp enable command. Specify the IP address to be used for synchronisation in the ip ntp ip command.

  LTP-8X(config)# ip ntp enable LTP-8X(config)# ip ntp ip 192.168.1.254

  
  

• Step 3. Specify the synchronisation interval in seconds by using the ip ntp interval command.

  LTP-8X(config)# ip ntp interval 3600

  
  

• Step 4. Use the ip ntp timezone and ip ntp daylightsaving commands to set the time zone of your region and indicate whether it should be switched to the daylight-saving time.

  LTP-8X(config)# ip ntp timezone 7 LTP-8X(config)# ip ntp daylightsaving

  

• Step 5. Check the entered data by using the do show ip ntp command. 
  

  LTP-8X(config)# do show ip ntp Ntp: Enabled: true Ntpserver: 192.168.1.254 Interval: 3600 Timezone: 7 Daylightsaving: true LTP-8X(config)#

  
  

• Step 6. Apply the configuration by using the commit command. 
  

  LTP-8X(config)# do commit

  
  

ACSD and DHCPD configuration

The terminal has an integrated auto configuration server (ACS). To ensure interaction between ONTs and ACS, ONTs should obtain IP addresses for their management interfaces. The terminal has an integrated DHCP server to solve this task. These two servers are interconnected and cannot work separately.

ACSD configuration

• Step 1. Switch to the configure view.

  LTP-8X# configure terminal

  
  

• Step 2. Turn on the ACS server by using the ip acs server enable command.

  LTP-8X(config)# ip acs server enable

  
  

• Step 3. If necessary, set the IP address, server mask, and identifier of the management VLAN, which will be used to send packets between ACS and ONTs. By default, mask 21 is set, which enables 2046 hosts per network.

  LTP-8X(config)# ip acs server ip 192.168.200.9 LTP-8X(config)# ip acs server mask 255.255.255.0 LTP-8X(config)# ip acs server vid 200

  
  

• Step 4. In addition to HTTP, ACS can also use an extended version of this protocol that supports encryption — HTTPS. This is configured by the ip acs server scheme command.
  

  LTP-8X(config)# ip acs server scheme http

  

• Step 5. If necessary, configure the login and password to be used by ONTs to access the ACS server.
  

  LTP-8X(config)# ip acs server login acs LTP-8X(config)# ip acs server password acsacs

  
  

DHCPD configuration

• Step 1. Start the DHCP server by using the ip dhcp server enable command.

  LTP-8X(config)# ip dhcp server enable

  
  

• Step 2. Configure the range of IP addresses to be assigned by the server with the ip dhcp server range command and specify the first and the last addresses of the range.

  LTP-8X(config)# ip dhcp server range 192.168.200.10 192.168.200.150

  
  

• Step 3. Set the maximum lease time in seconds, during which the server allows clients to use the addresses, by using the ip dhcp server lease-time command.

  LTP-8X(config)# ip dhcp server lease-time 600

  
  

• Step 4. Use the ip dhcp server option-43 command to configure output of option 43 in the DHCP offer packet for correct connection of ONTs to the ACS server. View general settings of ACSD and DHCPD to check the format of the option.
  

  LTP-8X(config)# ip dhcp server option-43

  
  

• Step 5. If necessary, configure the delivery of static routes to the network to the ONT TR-interface (option 121).
  

  LTP-8X(config)# ip dhcp server static-route net 172.20.240.0 mask 255.255.255.0 gateway 172.20.40.1

  

• Step 6. Check the changes by using the do show ip acs server command.

  LTP-8X(config)# do show ip acs server ACS server: Enabled: true Ip: 192.168.200.9 Port: 9595 Mask: 255.255.255.0 Vid: 200 Scheme: 'http' Login: 'acs' Password: 'acsacs' External fw ip: 0.0.0.0 External fw port: 9595 Local fw port: 9696 ACS DHCP server: Enabled: true Max lease time: 600 Insert option 43: true First IP: 192.168.200.10 Last IP: 192.168.200.150 DHCP option 43 (will be generated automatically): URL: 'http://192.168.200.9:9595' Login: 'acs' Password: 'acsacs'

  
  

• Step 7. Apply the configuration by using the commit command.
  

  LTP-8X(config)# do commit

  
  

LOGD configuration

System log collects terminal history data and allows its further display. Adjustment of system log operates with such terms as module, filter level, and output device.

Figure 23 — Terminal system log

Messages of the system log are grouped into modules according to their functions. Configuration of the following modules is possible:

Table 11 — System log modules

A filtering level and additional display information can be specified for messages of each module.
The filtering level sets the minimum importance level of the messages to be displayed in the log. The used filtering levels are listed in Table 12.

Table 12 — System log filtering levels

The log subsystem allows display of the terminal operation log on different devices. All output devices can be used simultaneously.

Table 13 — System log output device

The log is saved in non-volatile memory by default. The system has 4 log rotated files of 1M each. The last 3 logs are archived to gzip.

Module configuration

Consider module configuration by the example of the pmchal-gpon module responsible for messages from the GPON subsystem. Other modules have similar configuration process.

• Step 1. Set the logging level using the logging module pmchal-gpon loglevel command.

  LTP-8X(config)# logging module pmchal-gpon loglevel info

  
  

• Step 2. To view information about modules, use the do show logging module pmchal-gpon command.

  LTP-8X(config)# do show logging module pmchal-gpon Log: Submodule [pmchal-gpon]: Log level: notice LTP-8X(config)#

  
  

• Step 3. Apply the configuration by using the commit command.

  LTP-8X(config)# do commit

  

Configuring command logging to syslog

The system is capable to record all the user's commands to syslog. Use the following command to activate the function.

LTP-8X(config)# logging commands

Configuring the Origin parameter

The system can add an additional origin-id parameter to messages sent to the Syslog server. It will be added to the beginning of the log message.

Only one additional parameter can be used at a time.

LTP-8X(config)# logging origin-id 
   hostname      The sysname will be used as the hostname field of a
                 syslog message
   string        The user defined string will be used as the hostname
                 field of syslog header
   ip            The IP address of the sending interface will be used
                 as the hostname field of a syslog message

Configuring the log storage

Use the following command to record logs to non-volatile memory.

LTP-8X(config)# logging permanent

If you add "no" before the command, the logs will be recorded to RAM. In this case, the logs will be erased after reboot.

System log configuration

• Step 1. Use the logging buffer command to specify the memory size in bytes to be used for system log storage.

  LTP-8X(config)# logging buffer 262144

  
  

• Step 2. If necessary, use the logging remote command to specify the IP address of the remote Syslog server to be used to display system log.

  LTP-8X(config)# logging remote 192.168.1.43

  

• Step 3. Configure the output devices by using the logging command.

  Every output device may have its own filtering level or have the output disabled.

  For example, it is possible to change the display level for the CLI sessions, which are not connected via the RS-232 console port, to "info" and disable output to file.

  LTP-8X(config)# logging rsh loglevel info LTP-8X(config)# logging file loglevel none

  
  

• Step 4. To view Syslog configuration, use the do show logging settings command.

  LTP-8X(config)# do show logging settings Log: Remote syslog: 192.168.1.30 Remote syslog: 192.168.1.31 Remote syslog: 192.168.1.55:520 Remote syslog: 192.168.1.33 Size: 16384 Save logs between boots: true Log input commands: false Destinations: System: notice Console: notice Remote shells: info File: none

  
  

• Step 5. Apply the configuration by using the commit command. 
  

  LTP-8X(config)# do commit

  
  

ALARMD configuration

ALARMD is a terminal alarms manager. Alarms manager enables troubleshooting and provides information about important events related to terminal operation.

A record in active alarms log (an event) corresponds to an event, which happened in the terminal. Types of events and their descriptions are provided in the following table.

Table 14 — Types of events in the active alarms log

* The value can be adjusted.

Every record in the active alarms log has the parameters specified in Table 15 that are specified for every event type.

Table 15 — Parameters of events in the active alarms log

Active alarms log configuration

• Step 1. To configure the active alarms log, switch to the configure view.

  LTP-8X# configure terminal

  
  

• Step 2. Use the alarm command to specify the necessary event parameters. Event types are listed in Table 14, the parameters and possible values are given in Table 15.

  LTP-8X(config)# alarm temperature severity critical LTP-8X(config)# alarm temperature in LTP-8X(config)# alarm temperature out LTP-8X(config)# alarm temperature ttl 0

  
  

• Step 3. Apply the changes by using the do commit command.

  LTP-8X(config)# do commit

  
  

VLAN Configuration

This chapter describes VLAN configuration in the terminal switch.

VLAN ( Virtual Local Area Network) is a group of devices, which communicate on the channel level and are combined into a virtual network, connected to one or more network devices (GPON terminals or switches). VLAN is a very important tool for creating a flexible and configurable logical network topology over the physical topology of a GPON network. VLAN has two or more switch interfaces. A VLAN member interface can be either tagged or untagged. An outgoing packet of a tagged interface has a VLAN tag. An outgoing packet of an untagged interface has no VLAN tags. For more information about the configuration and rules of operation of interfaces, see the VLAN Configuration.

Adding VLAN

• Step 1. VLAN is configured in the terminal switch. Use the switch and configure commands consecutively to switch to the config view.

  LTP-8X# switch LTP-8X(switch)# configure terminal LTP-8X(switch)(config)#

  
  

• Step 2. Add a VLAN by using the vlan command. Pass VID as a parameter.

  LTP-8X(switch)(config)# vlan 5 LTP-8X(switch)(config-vlan)#

  
  

VLAN Configuration

• Step 1. Add tagged interfaces by using the tagged command. Pass interface type and number (or a range) as parameters. The interface types and numbers are given in Table 19, in the Interface configuration section.

  LTP-8X(switch)(config-vlan)# tagged pon-port 0 – 1

  
  

• Step 2. Add untagged interfaces by using the untagged command if needed. Pass interface type and number (or a range) as parameters.

  LTP-8X(switch)(config-vlan)# untagged front-port 1

  
  

• Step 3. Delete all unnecessary interfaces from the VLAN by using the forbidden command. Pass interface type and number (or a range) as parameters.

  LTP-8X(switch)(config-vlan)# forbidden 10G-front-port 0 – 1 LTP-8X(switch)(config-vlan)# forbidden front-port 0 , front-port 2 , front-port 3

  
  

• Step 4. Disable IGMP snooping by using the no ip igmp snooping enable command if needed. 
  

  LTP-8X(switch)(config-vlan)# no ip igmp snooping enable

  
  

• Step 5. Configure the IGMP querier if needed. It can be enabled by using the ip igmp snooping querier enable command.

  The fast-leave mode is enabled by using the ip igmp snooping querier fast-leave command. By default, this mode is disabled.
  DSCP and 802.1P marking for IGMP query is configured by using the ip igmp snooping querier user-prio and ip igmp snooping querier dscp commands.
  The upstream IGMP packet source IP address spoofing is configured by using the ip igmp snooping replace source-ip command.

  LTP-8X(switch)(config-vlan)# ip igmp snooping querier enable LTP-8X(switch)(config-vlan)# ip igmp snooping querier fast-leave LTP-8X(switch)(config-vlan)# ip igmp snooping querier user-prio 4 LTP-8X(switch)(config-vlan)# ip igmp snooping querier dscp 40 LTP-8X(switch)(config-vlan)# ip igmp snooping replace source-ip 192.168.21.2

  
  

• Step 6. Configure IGMP if needed.

  Compatible versions (v1, v2, v3, or their combination):

  LTP-8X(switch)(config-vlan)# ip igmp version v2-v3

  Interval between queries:

  LTP-8X(switch)(config-vlan)# ip igmp query-interval 125

  Maximum query response time:

  LTP-8X(switch)(config-vlan)# ip igmp query-response-interval 10

  Interval between Group-Specific Queries:

  LTP-8X(switch)(config-vlan)# ip igmp last-member-query-interval 1

  Robustness:

  LTP-8X(switch)(config-vlan)# ip igmp robustness 2

  
  

• Step 7. Disable MLD snooping by using the no ipv6 mld snooping enable command if needed.

  LTP-8X(switch)(config-vlan)# no ipv6 mld snooping enable

  
  

• Step 8. Configure the MLD querier if needed. It can be enabled by using the ipv6 mld snooping querier enable command.

  The fast-leave mode is enabled by using the ipv6 mld snooping querier fast-leave command. By default, this mode is disabled.
  DSCP and 802.1P marking for MLD query is configured by means of the ipv6 mld snooping querier user-prio and ipv6 mld snooping querier dscp commands.

  LTP-8X(switch)(config-vlan)# ipv6 mld snooping querier enable LTP-8X(switch)(config-vlan)# ipv6 mld snooping querier fast-leave LTP-8X(switch)(config-vlan)# ipv6 mld snooping querier user-prio 4 LTP-8X(switch)(config-vlan)# ipv6 mld snooping querier dscp 40

  
  

• Step 9. Configure MLD if needed.

  Compatible versions (v1, v2):

  LTP-8X(switch)(config-vlan)# ipv6 mld version v1-v2

  Interval between queries:

  LTP-8X(switch)(config-vlan)# ipv6 mld query-interval 125

  Maximum query response time:

  LTP-8X(switch)(config-vlan)# ipv6 mld query-response-interval 10

  Interval between Group-Specific Queries:

  LTP-8X(switch)(config-vlan)# ipv6 mld last-member-query-interval 1

  Robustness:

  LTP-8X(switch)(config-vlan)# ipv6 mld robustness 2

  
  

• Step 10. For further convenience, specify a VLAN name by using the name command. To clear the name, use the no name command. The default name is VID.

  LTP-8X(switch)(config-vlan)# name iptv

  
  

• Step 11. Apply the configuration by using the commit command. 
  

  LTP-8X(switch)(config-vlan)# exit LTP-8X(switch)(config)# commit

  
  

VLAN Deletion

• Step 1. Delete a VLAN by using the no vlan command. Pass VID (or its range) as a parameter.

  LTP-8X(switch)(config)# no vlan 5

  
  

Configuring access control list and policy

ACL (Access Control List) — the table which defined filtering rules for incoming traffic according to data transmitted in the incoming packets: protocols, TCP/UDP ports, IP address or MAC address. The ACL based on IPv4 and MAC should have different names. You can set one type of the lists per interface. Each access list contains up to 20 rules.

Configuring MAC access-list

In a MAC access list, filtering is implemented according to the following criteria and a mask:

Table 16 — The list of MAC access-list criteria

• Step 1. Create a mac access-list.

LTP-8X# switch 
LTP-8X(switch)# configure terminal
LTP-8X(switch)(config)# mac access-list extended eltexsrc

• Step 2. Configure rules and assign the list to a port.

  LTP-8X(switch)(config-mac-al)# deny A8:f9:4B:00:AA:00 FF:FF:FF:FF:FF:00 any LTP-8X(switch)(config-mac-al)# deny any any vlan any cos 7 7 LTP-8X(switch)(config-mac-al)# permit A8:F9:4B:00:00:00 FF:FF:FF:00:00:00 any vlan 2 cos 4 4 LTP-8X(switch)(config-mac-al)# exit LTP-8X(switch)(config)# interface front-port 7 LTP-8X(switch)(config-if)# service-acl mac eltexsrc LTP-8X(switch)(config-if)# exit LTP-8X(switch)(config)# commit

  
  

• Step 3. Check the access list configuration.

  LTP-8X(switch)# show access-list Extended MAC access list "eltexsrc"(#0), filters count: 3 Rule 1 (deny): MAC SA A8:F9:4B:00:AA:00 [FF:FF:FF:FF:FF:00] Rule 2 (deny): COS 7 [7] Rule 3 (permit): MAC SA A8:F9:4B:00:00:00 [FF:FF:FF:00:00:00] Vlan 2 COS 4 [4]

  
  

• Step 4. Check the list assignment to the port.

  LTP-8X(switch)# show interfaces acl front-port 7 Interface MAC access-list IP access-list front-port 0 eltexsrc -

  

Configuring IP access-list

The rules of an IP access list support criteria that are available in a MAC access-list

Table 17 — The list of the IP access list-criteria

• Step 1. Create an ip access-list.

  LTP-8X# switch LTP-8X(switch)# configure terminal LTP-8X(switch)(config)# ip access-list extended filter5

  
  

• Step 2. Configure rules and assign the list to a port.

  LTP-8X(switch)(config-ip-al)# deny tcp 10.10.5.0 255.255.255.0 any any any LTP-8X(switch)(config-ip-al)# permit tcp 10.10.0.0 255.255.0.0 any any any LTP-8X(switch)(config-ip-al)# exit LTP-8X(switch)(config)# interface front-port 7 LTP-8X(switch)(config-if)# service-acl ip filter5 LTP-8X(switch)(config-if)# exit LTP-8X(switch)(config)# commit

  
  

• Step 3. Check the access-list configuration.

  LTP-8X(switch)# show access-list Extended IP access list "filter5"(#10), filters count: 2 Rule 1 (deny): IPv4 protocol 6 (TCP) IP SA 10.10.5.0 [255.255.255.0] Sport 8080 Rule 2 (permit): IPv4 protocol 6 (TCP) IP SA 10.10.0.0 [255.255.0.0]

  
  

• Step 4. Check the access-list assignment to the port.

  LTP-8X(switch)# show interfaces acl front-port 7 Interface MAC access-list IP access-list front-port 0 eltexsrc filter5

  

Configuring ACL based on a bit mask

The filtering based on a bit mask is available in MAC and IP access-lists. The configuration is implemented with the help of offset-list.

Command format:

offset-list list1 <offset-type> <offset> <byte-mask> <byte-value> ...

You can configure up to 5 unique offset-lists on the OLT.

Table 18 — The list of the available offset-lists

permit any any vlan any cos any ethertype any offset-list eltex1p

• Step 1. Create an access-list.

  LTP-8X# switch LTP-8X(switch)# configure terminal LTP-8X(switch)(config)# mac access-list extended EltexOUI

  

• Step 2. Configure rules and assign the access-list to a port.

  LTP-8X(switch)(config-mac-al)# offset-list e1 l2 0 FF A8 l2 1 FF F9 l2 2 FF 4B LTP-8X(switch)(config-mac-al)# offset-list e2 l2 0 FF E0 l2 1 FF D9 l2 2 FF E3 LTP-8X(switch)(config-mac-al)# permit any any vlan any cos any ethertype any offset-list e1 LTP-8X(switch)(config-mac-al)# permit any any vlan any cos any ethertype any offset-list e2 LTP-8X(switch)(config-mac-al)# exit LTP-8X(switch)(config)# interface pon-port 0 LTP-8X(switch)(config-if)# service-acl mac OUIfilter LTP-8X(switch)(config-if)# exit LTP-8X(switch)(config)# commit

  
  

• Step 3. Check the access-list configuration.

  LTP-8X(switch)# show access-list Extended MAC access list "EltexOUI"(#2), filters count: 2 Offset lists: e1 l2:0:FF:A8 l2:1:FF:F9 l2:2:FF:4B e2 l2:0:FF:E0 l2:1:FF:D9 l2:2:FF:E3 Rule 1 (permit): Offset-list e1 Rule 2 (permit): Offset-list e2

  
  

Configuring policies

Configuring policies allows you to perform various manipulations on classified traffic, such as cos, dscp, queue setting.

• Step 1. Create an access-list according to which the traffic will be classified.

  LTP-8X# switch LTP-8X(switch)# configure terminal LTP-8X(switch)(config)# ip access-list extended sip-dhcp-acl LTP-8X(switch)(config-ip-al)# permit udp any 68 any 67 LTP-8X(switch)(config-ip-al)# permit udp any any any 5060 LTP-8X(switch)(config-ip-al)# exit

  
  

• Step 2. Create a traffic class.

  LTP-8X(switch)(config)# class-map sip-dhcp-class LTP-8X(switch)(config-class 'sip-dhcp-class')# match access-group sip-dhcp-acl LTP-8X(switch)(config-class 'sip-dhcp-class')# exit

  

• Step 3. Set policy.

  LTP-8X(switch)(config)# policy-map cos7 LTP-8X(switch)(policy-class 'cos7')# class sip-dhcp-class LTP-8X(switch)(traffic-class 'sip-dhcp-class')# cos 7 LTP-8X(switch)(traffic-class 'sip-dhcp-class')# exit LTP-8X(switch)(policy-class 'cos7')# exit LTP-8X(switch)(config)# interface pon-port 0 LTP-8X(switch)(config-if)# service-policy cos7 LTP-8X(switch)(config-if)# exit LTP-8X(switch)(config)# commit

  
  

• Step 4. Check the configuration of the policy and classes.

  LTP-8X(switch)# show access-list Extended IP access list "sip-dhcp-acl"(#8), filters count: 2 Rule 1 (permit): IPv4 protocol 17 (UDP) Sport 68 Dport 67 Rule 2 (permit): IPv4 protocol 17 (UDP) Dport 5060 LTP-8X(switch)# show interfaces acl pon-port 0 Interface MAC access-list IP access-list Policy-map pon-port 0 - - cos7

  
  

While the configuration, you should remember that deny in an ACL rule exclude the traffic from processing according to policy.

IGMP and MLD configuration in terminal switch

This chapter describes IGMP and MLD configuration in the terminal switch.

Enabling snooping

• Step 1. Snooping is configured globally in the terminal switch. Execute the switch and configure commands consecutively to switch to the config view.

  LTP-8X# switch LTP-8X(switch)# configure terminal LTP-8X(switch)(config)#

  
  

• Step 2. Enable IGMP snooping by using the ip igmp snooping command.

  LTP-8X(switch)(config)# ip igmp snooping

  

• Step 3. Enable MLD snooping by using the ipv6 mld snooping command.

  TP-8X(switch)(config)# ipv6 mld snooping

  
  

Enabling report proxy

• Step 1. Enable IGMP report proxy between VLANs by using the ip igmp proxy report enable command.

  LTP-8X(switch)(config)# ip igmp proxy report enable

  
  

• Step 2. Set IGMP report proxy rules by using the ip igmp proxy report range command. As parameters, pass a range of acceptable groups and the proxy direction as a VID pair.

  LTP-8X(switch)(config)# ip igmp proxy report range 224.0.0.0 239.255.255.255 from 200 to 98

  
  

• Step 3. Enable MLD report proxy between VLANs by using the ipv6 mld proxy report enable command.

  LTP-8X(switch)(config)# ipv6 mld proxy report enable

  
  

• Step 4. Set MLD report proxy rules by using the ipv6 mld proxy report range command. As parameters, pass a range of acceptable groups and the proxy direction as a VID pair. 
  

  LTP-8X(switch)(config)# ipv6 mld proxy report range ff15:0::1 ff15:0::ffff from 300 to 98

  
  

Interface сonfiguration

This chapter describes configuration of terminal interfaces.

Terminal interfaces can be divided into two groups: Ethernet interfaces and GPON interfaces. Ethernet interfaces are used for terminal connection to operator's network core. GPON interfaces are used for ONT connections.

Figure 24 — Set of terminal interfaces

Table 19 shows types of terminal switch interfaces.

Table 19 — Interfaces types and numbers

Ethernet interface configuration

• Step 1. Switch to the view of the interface (of interface group), which settings should be changed.

  LTP-8X# switch LTP-8X(switch)# configure terminal LTP-8X(switch)(config)# interface front-port 0 LTP-8X(switch)(config-if)#

  
  

• Step 2. Enable the interface by using the no shutdown command. On the contrary, the shutdown command disables the interface.

  LTP-8X(switch)(config-if)# no shutdown

  
  

• Step 3. Enable or disable flow control (IEEE 802.3x PAUSE) by using the flow-control command.

  LTP-8X(switch)(config-if)# flow-control on

  
  

• Step 4. Enable or disable incoming packets filtering by using the ingress-filtering command. Only the packets of the VLANs, which have this interface, will pass the enabled filter. Other packets will be filtered out. If the filter is disabled, a packet will be processed regardless of its VID field.

  LTP-8X(switch)(config-if)# ingress-filtering

  
  

• Step 5. Specify a rule for VLAN tags processing for incoming packets by using the frame-types command. As a parameter, specify the packets to be allowed: either tagged (tagged only) or all (both tagged and untagged).

  LTP-8X(switch)(config-if)# frame-types tagged

  
  

• Step 6. Specify the port pvid, i. e. the VLAN, which will accommodate untagged packets. Specify the pup value, which is the priority of untagged packets.

  LTP-8X(switch)(config-if)# pvid 100 LTP-8X(switch)(config-if)# pup 0

  
  

• Step 7. If necessary, enable or disable packets transfer from this interface to another one (or a range of interfaces) by using the bridging to command. Pass interface type and number (or a range) as parameters. The interface types and numbers are given in Table 19.

  All front-port interfaces are isolated by default, however data can be sent to any pon-port interface. The same is applicable to pon-port interfaces, which are isolated from each other, but can send data to any front-port interfaces.

  LTP-8X(switch)(config-if)# bridging to front-port 1

  

• Step 8. If needed, use the spanning-tree command group to adjust the STP protocol.

  LTP-8X(switch)(config-if)# spanning-tree enable LTP-8X(switch)(config-if)# spanning-tree priority 32 LTP-8X(switch)(config-if)# spanning-tree pathcost 0 LTP-8X(switch)(config-if)# spanning-tree admin-p2p auto LTP-8X(switch)(config-if)# spanning-tree admin-edge

  
  

• Step 9. If needed, set band limits for Broadcast, Multicast, Unknown Unicast and the whole traffic by using the rate-limit bc/mc/uu, and shaper commands correspondingly. As parameters, pass the maximum band width in kbps and the maximum length of uninterrupted transmission of packet batches in bytes.

  LTP-8X(switch)(config-if)# rate-limit bc 1000 2048 LTP-8X(switch)(config-if)# rate-limit mc 1000 2048 LTP-8X(switch)(config-if)# shaper 100000 4000

  
  

• Step 10. Set automatic determination of speed and duplex of the interface either by using the speed auto command or manually.

  LTP-8X(switch)(config-if)# speed auto

  
  

• Step 11. Set the interface description by the description command.

  LTP-8X(switch)(config-if)# description org-uplink

  
  

• Step 12. Enable mac notification trap if necessary. The device will send snmp-trap when learning new MAC or when deleting the old one.

  LTP-8X(switch)(config-if)# snmp trap mac-notification added LTP-8X(switch)(config-if)# snmp trap mac-notification removed

  
  

• Step 13. Apply the configuration by using the commit command. 
  

  LTP-8X(switch)(config-if)# exit LTP-8X(switch)(config)# commit

  
  

Configuring Storm Control

A storm appears due to excessive number of broadcast or/and multicast messages transmitted on the network via a single port simultaneously. It leads to an overload of the network resources and appearing of delays. A storm also can be caused by loopback segments of an Ethernet network. The switch evaluates the rate of incoming broadcast, multicast and unknown unicast traffic for port with enabled Storm Control and drops packets if the rate exceeds the set maximum value.

There is an opportunity to record a storm event to the log and disable the port for a specified time (in seconds).

LTP-8X(switch)(config-if)# rate-limit uu 1000 2048 
LTP-8X(switch)(config-if)# rate-limit mc 1000 2048 logging 
LTP-8X(switch)(config-if)# rate-limit bc 1000 2048 logging shutdown 30

For manual enabling of the port after blocking by Storm Control, use the clear storm command.

LTP-8X(switch)# clear storm front-port 0

GPON interface configuration

• Step 1. Switch to the configure view.

  LTP-8X# configure terminal

  
  

• Step 2. Activate traffic encryption with the gpon olt encryption command if necessary. Specify the encryption key renewal period with the gpon olt encryption key-update command. Pass time period in seconds as a parameter.

  LTP-8X(config)# gpon olt encryption LTP-8X(config)# gpon olt encryption key-update 60

  
  

• Step 3. Specify ONT authentication method with the gpon olt authentication command. ONTs can be authenticated by password, serial number, or both.

  LTP-8X(config)# gpon olt authentication both

  
  

• Step 4. Specify time of ONT blocking (in minutes) in case of MAC duplication or storm appearing. For details see the Configuring Storm Control section.
  

  LTP-8X(config)# gpon olt ont-block-time 1

  It is possible to receive a PON password of non-configured ONTs in an ALARM trap.

  LTP-8X(config)# gpon olt password-in-trap

  
  

• Step 5. Switch to GPON interface configuration. 
  

  LTP-8X(config)# interface gpon-port 0-7

  
  

• Step 6. Enable or disable interfaces with the no shutdown or shutdown command respectively if necessary.

  LTP-8X(config)(if-gpon-0-7)# no shutdown

  
  

• Step 7. Activate FEC for interfaces with the fec command if necessary. 
  

  LTP-8X(config)(if-gpon-0-7)# fec

  
  

  In case of using FEC, the real bandwidth decreases by ~10 %

  
  

• Step 8. If necessary, enable the ability to migrate MAC addresses for selected interfaces. 
  

  LTP-8X(config)(if-gpon-0-7)# mac-migration

  
  

• Step 9. Adjust time settings of optical transceivers if needed.
  

  LTP-8X(config)(if-gpon-0-7)# optics use-custom LTP-8X(config)(if-gpon-0-7)# optics ...

  
  

  Optical transceivers should be adjusted only by agreement with Eltex Service Center.

  
  

• Step 10. If necessary, enable unknown multicast with the following command.

  LTP-8x(config)(if-gpon-7)# unknown-multicast-forward enable

  
  

• Step 11. Apply the configuration by using the commit command.

  LTP-8X(config)(if-gpon-0-7)# exit LTP-8X(config)# do commit

  

GPON port force enable

LTP-X devices have the ability to forcibly enable GPON ports that are disabled in the configuration

LTP-8X# show interface gpon-port 7 state 
    Reading:  .
    Gpon-port status information:
        Gpon-port:                             7
        State:                          DISABLED
        ONT count:                             0
        Force-mode:                     disabled
        ONT autofind:                    enabled
        SFP vendor:                       Ligent
        SFP product number:          LTE3680M-BC
        SFP vendor revision:                 1.0
        SFP temperature [C]:                  67
        SFP voltage [V]:                    3.28
        SFP tx bias current [mA]:            n/a
        SFP tx power [dBm]:                  n/a

To forcibly enable the port, put it into the force mode. The command is applied without entering the commit command.

LTP-8X# force-mode interface gpon-port 7

As a result, the port will be enabled until the next reconfiguration or reboot.

LTP-8X# show interface gpon-port 7 state 
    Reading:  .
    Gpon-port status information:
        Gpon-port:                             7
        State:                                OK
        ONT count:                             0
        Force-mode:                      enabled
        ONT autofind:                    enabled
        SFP vendor:                       Ligent
        SFP product number:          LTE3680M-BC
        SFP vendor revision:                 1.0
        SFP temperature [C]:                  65
        SFP voltage [V]:                    3.25
        SFP tx bias current [mA]:          16.81
        SFP tx power [dBm]:                 3.34

Unknown-multicast traffic forwarding

LTP-X devices have the ability to forward unknown-multicast to broadcast-gem-port. Configuration is performed for each GPON port separately.

LTP-8X# configure terminal
LTP-8X(config)# interface gpon-port 0
LTP-8X(config)(if-gpon-0)# unknown-multicast-forward enable
LTP-8X(config)(if-gpon-0)# unknown-multicast-forward to broadcast-gem

GPON ports redundancy configuration

GPON port redundancy is designed to increase the reliability of the PON network. There are several types of redundancy: Type-A, Type-B, Type-C and Type-D. LTP-X supports Type-B redundancy. Type-B redundancy provides the ability to automatically switch between channels by using an additional GPON port. There are several ONT connection schemes (Figure 25 and Figure 26).

Figure 25 — Type-B redundancy. Connection scheme 1

Figure 26 — Type-B redundancy. Connection scheme 2

Redundancy is supported on the following boards:

• LTP-4X/8X-rev.C with PLD version 14 and higher;
• LTP-4X/8X rev.D.

The necessary information can be obtained by using the show system environment command.

LTP-8X# show system environment 
    System information:
        CPU load average (1m, 5m, 15m):   0.60  0.44  0.31
        Free RAM/Total RAM (Mbytes):      175/495
        Temperature (sensor1/sensor2):    40C/50C
        Reset button:                     enabled

        Fan configured speed, %:          auto
        Fan minimum speed, %:             15
        Fan speed levels, %:              16 27 39 51 64 76 88 100 

        Fan state (fan0/fan1):            8640rpm  8760rpm

        PLD FW version:                   14 

        TYPE:                             LTP-8X-rev.C 
        HW_revision:                      1v4 
        SN:                               GP2B000860 
        MAC:                              E0:D9:E3:DF:E4:D0 

        Power supply information:
                Module 1: PM160 220/12 1vX
                        Type: Alternate current(AC)
                        Intact: 1
                Module 2: PM150(75) 48/12 1vX
                        Type: Direct current(DC)
                        Intact: 0

Before connecting an ONT, check the list of supported ONTs (Table 20). For the proper redundancy operation, it is necessary to connect ONT to OLT according to one of the schemes (Figure 25 and Figure 26).

Table 20 — List of supported ONTs

• Step 1. The redundancy configuration is performed with the gpon olt redundacy gpon-port command.

  Redundancy can only be configured on 4 pairs of ports — 0-1, 2-3, 4-5 and 6-7, other combinations are not supported.

  The gpon olt redundancy gpon-port command allows you to configure redundancy on one or more pairs at once.

  LTP-8X# configure terminal LTP-8X(config)# gpon olt redundancy gpon-port 0-1,2-3,4-5,6-7 LTP-8X(config)# do commit

  Once configured, the even-numbered port defaults to the primary channel and the odd-numbered port to the redundant channel.

  LTP-8X# show interface gpon-port 0-1 state Reading: .. Gpon-ports status information: Gpon-port: 0 1 State: OK REDUNDANT ONT count: 0 0 Force-mode: disabled disabled ONT autofind: enabled enabled SFP vendor: Ligent Ligent SFP product number: LTE3680M-BC LTE3680M-BC SFP vendor revision: 1.0 1.0 SFP temperature [C]: 70 39 SFP voltage [V]: 3.19 3.24 SFP tx bias current [mA]: 17.29 n/a SFP tx power [dBm]: 3.54 n/a

  
  

• Step 2. Configure the ONT on an even-numbered port.

  ONT configuration is performed only on even-numbered ports (0, 2, 4 and 6), odd-numbered ports use the configuration from even-numbered ports.

  
  

  LTP-8X# configure terminal LTP-8X(config)# interface ont 0/2 LTP-8X(config)(if-ont-0/2)# serial ELTX62108400 LTP-8X(config)(if-ont-0/2)# do commit

  Once configured, the ONT will appear in the OK state on the main channel and in the REDUNDANT state on the redundant channel.

• Step 3. To display ONT information on a pair of channels, use the show interface ont x-x redundant command.

  LTP-8X# show interface gpon-port 0-1 state Reading: .. Gpon-ports status information: Gpon-port: 0 1 State: OK REDUNDANT ONT count: 1 1 Force-mode: disabled disabled ONT autofind: enabled enabled SFP vendor: Ligent Ligent SFP product number: LTE3680M-BC LTE3680M-BC SFP vendor revision: 1.0 1.0 SFP temperature [C]: 78 67

  
  

  SFP voltage [V]: 3.18 3.23 SFP tx bias current [mA]: 18.94 n/a SFP tx power [dBm]: 3.54 n/a LTP-8X# show interface ont 0-1 redundant ----------------------------------- GPON-port 0 ONT redundant list ----------------------------------- ## Serial ONT ID GPON-port Status RSSI[dBm] Version EquipmentID 1 ELTX62108400 2 0 OK -10.71 3.28.1.69 NTU-1 ----------------------------------- GPON-port 1 ONT redundant list ----------------------------------- ## Serial ONT ID GPON-port Status RSSI[dBm] Version EquipmentID 1 ELTX62108400 2 1 REDUNDANT n/a 3.28.1.69 NTU-1 Total ONT count: 2

  
  

In case of malfunction on the main channel, such as line breakage, there will be a seamless channel change — the redundant channel will become the main channel, the main channel in this case will go to redundant state. Seamless channel change is the transition of all ONTs from the main channel to the redundant channel without interrupting client sessions.

LTP-8X# show interface ont 0-1 redundant

-----------------------------------
GPON-port 0 ONT redundant list
-----------------------------------

        ##         Serial   ONT ID   GPON-port      Status   RSSI[dBm]     Version   EquipmentID
         1   ELTX62108400        2           0   REDUNDANT         n/a   3.28.1.69         NTU-1

-----------------------------------
GPON-port 1 ONT redundant list
-----------------------------------

        ##         Serial   ONT ID   GPON-port   Status   RSSI[dBm]     Version   EquipmentID
         1   ELTX62108400        2           1       OK      -14.85   3.28.1.69         NTU-1

Total ONT count: 2

Port Mirroring configuration

Port mirroring is used to duplicate the traffic on monitored ports by sending ingress or and/or egress packets to the controlling port. Users can define a controlled port and controlling ports and select the type of the traffic (ingress or egress), which will be sent to the controlling port.

Configuration of the controlled port

• Step 1. Mirroring is configured in the terminal switch. Execute the switch and configure commands consecutively to switch to the config view.

  LTP-8X# switch LTP-8X(switch)# configure terminal LTP-8X(switch)(config)#

  
  

• Step 2. Configure the pon-port mirroring for ingress and egress traffic.

  LTP-8X(switch)(config)# mirror rx interface pon-port 0 LTP-8X(switch)(config)# mirror tx interface pon-port 0

  
  

• Step 3. Apply the configuration by using the commit command.

  LTP-8X(switch)(config)# commit

  
  

Configuration of the controlling port

• Step 1. Switch to the switch config view by using the switch and configure commands.

  LTP-8X# switch LTP-8X(switch)# configure terminal LTP-8X(switch)(config)#

  
  

• Step 2. Configure mirroring and traffic analysis for any front-port.

  LTP-8X(switch)(config)# mirror rx analyzer front-port 7 LTP-8X(switch)(config)# mirror tx analyzer front-port 7

  
  

• Step 3. If necessary, add a VLAN tag to be used for all mirrored traffic and packet priority.

  LTP-8X(switch)(config)# mirror add-tag LTP-8X(switch)(config)# mirror rx added-tag-config vlan 1555 user-prio 0 LTP-8X(switch)(config)# mirror tx added-tag-config vlan 1555 user-prio 0

  
  

• Step 4. Apply the configuration by using the commit command.

  LTP-8X(switch)(config)# commit

  
  

LLDP configuration

Link Layer Discovery Protocol (LLDP) is a Data link layer protocol that allows network devices to announce information about themselves and their capabilities to the network, as well as to collect this information about neighboring devices. The standard RFC mib 1.0.8802 are supported by the SNMP agent.

LLDP configuration

• Step 1. Activate the LLDP.

  LTP-8X(switch)(config)# lldp enable

  
  

• Step 2. If necessary, configure LLDPDU transfer mode.

  LTP-8X(switch)(config)# interface front-port 0 LTP-8X(switch)(config-if)# lldp mode transmit-receive

  
  

• Step 3. Configure optional LLDP-TLVs for ports.

  LTP-8X(switch)(config-if)# lldp optional-tlv sys-desc LTP-8X(switch)(config-if)# lldp optional-tlv port-desc

  
  

• Step 4. Specify the amount of time for the receiver to keep LLDP packets before dropping them.
  

  LTP-8X(switch)(config)# lldp hold-multiplier 5

  This value will be transmitted to the receiving side in the LLDP update packets; and should be an increment for the LLDP timer. Thus, the lifetime of LLDP packets is calculated by the formula.

  TTL = min(65535,LLDP-Timer * LLDP-HoldMultiplier)

  
  

• Step 5. Set the reinitialization time of LLDP.

  LTP-8X(switch)(config)# lldp reinit 3

  
  

• Step 6. Specify how often the device will send LLDP information updates.

  LTP-8X(switch)(config)# lldp timer 60

  
  

• Step 7. Specify the delay between the subsequent LLDP packet transmissions caused by the changes of values or status in the local LLDP MIB database.

  LTP-8X(switch)(config)# lldp tx-delay 3

  It is recommended that this delay be less than 0.25* LLDP-Timer.

• Step 8. Specify the processing mode of LLDP packets.
  LLDP packet processing mode:

  • filtering — LLDP packets are filtered if LLDP is disabled on the switch;
  • flooding — LLDP packets are transmitted if LLDP is disabled on the switch.

LTP-8X(switch)(config)# lldp lldpdu flooding

• Step 9. Apply the configuration by using the commit command.

LTP-8X(switch)(config)# commit

ERPS configuration

ERPS (Ethernet Ring Protection Switсhing) — link layer protocol designed to increase the stability and reliability of a data network by creating a ring topology with logical blocking of interfaces. It is realized by reducing recovery network time in case of breakdown. Recovery time does not exceed 1 second. It is much less than network change over time in case of spanning tree protocols usage.

ERPS configuration

• Step 1. Enable ERPS.

  LTP-8X(switch)(config)# erps enable

  
  

• Step 2. Create an ERPS ring with the R-APS VLAN identifier through which service traffic will be transmitted.

  LTP-8X(switch)(config)# erps vlan 700

  
  

• Step 3. Specify east/west port.

  LTP-8X(switch)(config-erps)# port east front-port 3 LTP-8X(switch)(config-erps)# port west port-channel 1

  
  

• Step 4. Set the range of secure VLANs.
  

  LTP-8X(switch)(config-erps)# protected vlan add 100-103

  
  

• Step 5. If necessary, assign the RPL port with the owner/neighbor command.

  LTP-8X(switch)(config-erps)# rpl east owner

  
  

• Step 6. Change the timers if necessary.
  

  LTP-8X(switch)(config-erps)# timer guard 10 LTP-8X(switch)(config-erps)# timer holdoff 100 LTP-8X(switch)(config-erps)# timer wtr 1

  
  

• Step 7. Specify a subring if necessary. 
  

  LTP-8X(switch)(config-erps)# sub-ring vlan 750

  
  

• Step 8. Enable the ring by the enable command. 
  

  LTP-8X(switch)(config-erps)# ring enable

  

• Step 9. View the status of the generated ERPS ring.

  LTP-8X(switch)# show erps vlan 700 R-APS VLAN : 700 Admin Status : Enabled West Port : port-channel 1 (Signal Fail) East Port : front-port 1 (Forwarding) RPL Port : East RPL Owner : Enabled (Active) Protected VLANs : 100-103 Ring MEL : 1 Holdoff Time : 100 msec Guard Time : 10 msec WTR Time : 1 min Current Ring State : Protection Revertive : Yes Compatibility with version : 2 Sub-Ring R-APS VLAN TC Propagation State ------------------- -------------------- 750 Disable

  
  

ARP-Inspection configuration

The ARP Inspection function is dedicated to defense against attacks which use ARP (for instance, ARP-spoofing — ARP traffic interception). ARP Inspection is implemented on the basis of static correspondence between IP and MAC addresses defined for VLAN.

ARP-Inspection configuration

• Step 1. Switch to the switch config view by using the switch and configure commands.

  LTP-8X# switch LTP-8X(switch)# configure terminal LTP-8X(switch)(config)#

  
  

• Step 2. Enable arp inspection, add static entries.

  LTP-8X(switch)(config)# ip arp inspection LTP-8X(switch)(config)# ip arp inspection static-table 1.1.1.1 A8:F9:4B:11:11:01 LTP-8X(switch)(config)# ip arp inspection static-table 1.1.1.2 A8:F9:4B:11:11:10 vlan 10

  
  

• Step 3. Configure trusted and untrusted interfaces.

  LTP-8X(switch)(config)# interface front-port 7 LTP-8X(switch)(config-if)# no ip arp inspection trusted LTP-8X(switch)(config)# interface front-port 0 — 6 LTP-8X(switch)(config-if)# ip arp inspection trusted

  

• Step 4. Apply the configuration by using the commit command.

  LTP-8X(switch)(config)# commit

  
  

QoS rules configuration

The traffic prioritization and allocation by hardware queues (IEEE 802.1p/DSCP) are implemented on the basis of set rules in the system.

Table 21 — Traffic prioritization methods

• Step 1. Set a queue on which packets will be transmitted without preset rules. The 0 queue has the least priority.

  LTP-8X(switch)(config)# qos default 0

  
  

• Step 2. Set a traffic prioritization method by using the qos type command. Send a type of prioritization as an argument.

  LTP-8X(switch)(config)# qos type 1

  

• Step 3. Using qos map command, set rules for translation of 802.1p and DSCP/TOS to a queue number. Send field type and priorities lists as parameters.

  LTP-8X(switch)(config)# qos map 1 0-4,15,63 to 6 LTP-8X(switch)(config)# commit LTP-8X(switch)(config)# exit LTP-8X(switch)# show qos Priority assignment by 802.1p packet field Default priority queue is 0 DSCP queues: 7: 63 6: 5: 4: 3: 2: 1: 0: 802.1p queues: 7: 7 6: 6 5: 5 4: 4 3: 3 2: 2 1: 1 0: 0 WRR queues disabled WRR values for queues 7..0: 8 7 6 5 4 3 2 1

  
  

Weighted Round Robin (WRR) configuration

Weighted Round Robin (WRR) — an algorithm which distribute throughput by classes, using a scheme of weighted round robin. The OLT has 8 hardware queues.

• Step 1. Enable WRR and set 4 queues (0, 1, 2, 3) which will be processed by the algorithm. The other queues will be strict. The WRR queues are enumerated from 0.

  LTP-8X(switch)(config)# qos wrr enable 4

  
  

• Step 2. The weight of each queue, starting with the 7th.

  LTP-8X(switch)(config)# qos wrr queues 1 1 1 1 60 20 15 5

  
  

• Step 3. Save the configuration.

  LTP-8X(switch)(config)# commit LTP-8X(switch)(config)# exit LTP-8X(switch)# exit LTP-8X# save

  
  

LAG configuration

This chapter describes configuration of uplink interfaces aggregation. Link aggregation (IEEE 802.3ad) is a technology that allows multiple physical links to be combined into one logical link (aggregation group). Aggregation group has a higher throughput and is very reliable.

Figure 27 — Multiple physical links combined to an aggregation group

The terminal supports two interface aggregation modes: static and dynamic. Static aggregation implies that all communication links of a group are always active. As for dynamic aggregation, link activity is dynamically determined during operation via LACP protocol.

Table 22 — Operation modes of aggregation groups

The terminal has several algorithms of load balancing within aggregation groups.

Table 23 — Load balancing modes

The terminal supports two LACP modes. Passive — the terminal does not initiate creation of a logical link, but processes incoming LACP packets. Active — the terminal creates an aggregated communication link and initiates parameters conformance. The parameters are coordinated if equipment operates in active or passive LACP modes.

LAG configuration

LAG configuration represents configuration of static aggregation and LACP. To configure LAG, perform the steps marked blue in Figure 28. LACP configuration requires all steps to be performed.

Figure 28 — LAG and LACP configuration procedure

• Step 1. LAG is configured in the terminal switch. Execute the switch and configure commands consecutively to switch to the config view.

  LTP-8X# switch LTP-8X(switch)# configure terminal LTP-8X(switch)(config)#

  
  

• Step 2. Create a port-channel logical interface by using the interface port-channel command.

  As a parameter, pass the number of the interface being created. Up to ten logical interfaces can be created.

  LTP-8X(switch)(config)# interface port-channel 3 LTP-8X(switch)(config-if)#

  
  

• Step 3. Set general interface parameters: speed, duplex, flow-control, etc. Interfaces configuration is described in detail in the Interface configuration section.
  
  

• Step 4. Configure aggregation by using the mode command. Pass the operation mode as a parameter. Operation modes are specified in Table 22.

  LTP-8X(switch)(config-if)# mode lacp

  
  

• Step 5. This step should only be performed for LACP configuration. Set a LACP system priority by using the lacp system-priority command. The no lacp system-priority command returns 32768 (default value).

  LTP-8X(switch)(config-if)# exit LTP-8X(switch)(config)# lacp system-priority 32541

  
  

  The lacp system-priority command can be executed in the configure view of the terminal switch.

  
  

• Step 6. Specify load balancing rules by using the port-channel load-balance command if needed. Pass the load balancing mode as a parameter. Balance modes are specified in Table 23.

  LTP-8X(switch)(config)# port-channel load-balance ip

  
  

  The port-channel load-balance command can be executed in the configure view of the terminal switch.

  
  

• Step 7. When used for load balancing, L4 parameters require a long hash. Enable the long hash by using the port-channel l4-long-hash enable command.

  LTP-8X(switch)(config)# port-channel l4-long-hash enable

  
  

  The port-channel l4-long-hash command can be executed in the configure view of the terminal switch.

  
  

• Step 8. Add physical interfaces into the logical one by using the channel-group command. As a parameter, pass the number of the logical interface.

  LTP-8X(switch)(config)# interface front-port 0 — 4 LTP-8X(switch)(config-if-range)# channel-group port-channel 3

  
  

  The channel-group command can be executed in the configure view of an interface (a range) of the switch.

  
  

• Step 9. This step should only be performed for LACP configuration. Set a priority for a physical interface by using the lacp port-priority command if necessary. The no lacp port-priority command resets port priority to the default value of 32768; 1 is the highest priority.

  LTP-8X(switch)(config-if-range)# no lacp port-priority LTP-8X(switch)(config-if-range)# exit LTP-8X(switch)(config)# interface front-port 0 LTP-8X(switch)(config-if)# lacp port-priority 256

  
  

  The lacp port-priority command can be executed in the configure view of a switch interface.

  
  

• Step 10. This step should only be performed for LACP configuration. Use the lacp mode command to set an active or passive LACP mode.

  LTP-8X(switch)(config-if)# exit LTP-8X(switch)(config)# interface port-channel 3 LTP-8X(switch)(config-if)# lacp mode active

  
  

• Step 11. This step should only be performed for LACP configuration. In case of the active LACP mode, set an interval for transmission of LACP control packets by using the lacp rate command. Pass slow (30 seconds) or fast (1 second) as a parameter.
  

  LTP-8X(switch)(config-if)# lacp rate slow

  
  

• Step 12. Apply the configuration by using the commit command. 
  

  LTP-8X(switch)(config-if)# exit LTP-8X(switch)(config)# commit

  

DHCP Relay Agent configuration

This chapter describes configuration of DHCP Relay Agent in the terminal.

DHCP Relay Agent is used to provide a DHCP server with additional information about a received DHCP request. This may include information about the terminal running DHCP Relay Agent as well as information about the ONT, which sent the DHCP request. DHCP packets are modified by interception and further processing in the terminal CPU.

The DHCP server analyses DHCP option 82 and identifies the ONT. DHCP Relay Agent allows the option to be both transparently transmitted from the ONT and formed/rewritten according to a specified format. DHCP option 82 is especially useful for networks, which have no private VLANs dedicated for each user.

DHCP Relay Agent supports configurable formats for both Circuit ID and Remote ID. The format of the suboptions is configured with the help of the tokens listed in Table 24. The placeholders will be replaced with corresponding values, while the rest of the words will be passed as is.

Table 24 — DHCP Option 82 tokens

In addition to DHCP option 82, DHCP Relay Agent has some more functions related to network security. It provides protection from DoS attacks by setting a threshold for intensity of DHCP messages, which are received from ONT. Exceeding the threshold blocks DHCP requests. The blocking time can be configured.

It also protects from illegal DHCP servers by controlling the source IP address of DHCP responses. Transmitted are only the DHCP responses, which arrived from IP addresses of trusted DHCP servers.

DHCP Relay Agent profiles management

A set of profiles is used for DHCP Relay Agent configuration. All VLANs use dhcp-ra-00 profile by default.

The configuration is flexible as it allows DHCP profiles to be assigned not only to a terminal on the whole, but separately to each VLAN as well. To assign a profile, the following steps should be taken.

• Step 1. Assign the default profile for all VLANs with the help of the gpon olt profile dhcp-ra dhcp-ra-00 command.

  LTP-8X# configure terminal LTP-8X(config)# gpon olt profile dhcp-ra dhcp-ra-00

  
  

• Step 2. Create a new DHCP Relay Agent profile with the help of the profile dhcp-ra command if necessary. Pass profile name as a parameter.

  LTP-8X(config)# profile dhcp-ra dhcp-ra-01 LTP-8X(config-dhcp-ra)("dhcp-ra-01")# exit

  
  

• Step 3. Assign the newly created profile to a selected VLAN with the gpon olt profile dhcp-ra dhcp-ra-01 command. As a parameter, pass the VID, which requires individual configuration.

  LTP-8X(config)# gpon olt profile dhcp-ra dhcp-ra-01 vid 1000

  
  

• Step 4. Check the changes by using the show gpon olt configuration command.

  LTP-8X(config)# do show gpon olt configuration Profile dhcp-ra: dhcp-ra-00 OLT Profile DHCP Relay Agent 0

  
  

  Profile dhcp-ra per VLAN 1000 [0]: Profile: dhcp-ra-01 OLT Profile DHCP Relay Agent 1

  
  

• Step 5. Apply the changes by using the commit command. 
  

  LTP-8X(config)# do commit

  
  

  To apply the changes, the OLT should be reconfigured.

  
  

DHCP Relay Agent profiles configuration

• Step 1. Switch to the corresponding DHCP Relay Agent profile.

  LTP-8X(config)# profile dhcp-ra dhcp-ra-01

  
  

• Step 2. Enable DHCP traffic processing with the enable command.

  LTP-8X(config-dhcp-ra)("dhcp-ra-01")# enable

  
  

• Step 3. Enable insert/overwrite of DHCP option 82 with the help of the overwrite-option82 command if needed.

  LTP-8X(config-dhcp-ra)("dhcp-ra-01")# overwrite-option82

  
  

• Step 4. Specify the DHCP option 82 format with the help of the overwrite-option82 circuit-id and overwrite-option82 remote-id commands if needed. A list of possible tokens is given in Table 24.
  

  LTP-8X(config-dhcp-ra)("dhcp-ra-01")# overwrite-option82 circuit-id "%HOSTNAME% %MAC% %OPT82_CID%" LTP-8X(config-dhcp-ra)("dhcp-ra-01")# overwrite-option82 remote-id "%OPT82_RID%"

  
  

• Step 5. Enable DoS attack protection with the help of the dos-block command if needed. Specify a threshold for the number of DHCP queries per second that will block queries when exceeded. Use the dos-block packet-limit command for it. Use the dos-block block-time command to specify the blocking time in seconds. 
  

  LTP-8X(config-dhcp-ra)("dhcp-ra-01")# dos-block LTP-8X(config-dhcp-ra)("dhcp-ra-01")# dos-block packet-limit 200 LTP-8X(config-dhcp-ra)("dhcp-ra-01")# dos-block block-time 300

  
  

• Step 6. Set a list of trusted DHCP servers with the help of the trusted primary and trusted secondary commands. Specify a response timeout for DHCP servers by using the trusted timeout command. Activate filters with the help of the trusted command. 
  

  LTP-8X(config-dhcp-ra)("dhcp-ra-01")# trusted primary 10.0.0.1 LTP-8X(config-dhcp-ra)("dhcp-ra-01")# trusted secondary 10.0.0.2 LTP-8X(config-dhcp-ra)("dhcp-ra-01")# trusted timeout 100 LTP-8X(config-dhcp-ra)("dhcp-ra-01")# trusted

  
  

• Step 7. Apply the changes by using the commit command. 
  

  LTP-8X(config-dhcp-ra)("dhcp-ra-01")# do commit

  
  

  To apply the changes, the OLT should be reconfigured.

  
  

Active DHCP leases monitoring

When enabled, DHCP-RA allows monitoring of DHCP leases. To view the list of sessions, use the do show interface gpon-port 0 dhcp sessions command.

LTP-4X# show interface gpon-port 1 dhcp sessions 
    DHCP sessions (2):
##      Serial       ONT  Service       IP                 MAC          Vid    GEM  Life time
1  454C5458690000E8  1/4    1     192.168.101.102  A8:F9:4B:E5:67:8B    1101   433   3587
2  454C5458690000E8  1/4    0     192.168.200.51   A8:F9:4B:E5:67:8A    600    432   86307

It is also possible to remove dynamic entries from the DHCP snooping table with the clear dhcp-sessions interface ont command.

LTP-8X# clear dhcp-sessions interface ont <0-7>[/0-127]

Broadcast-unicast relay configuration

To reduce the broadcast traffic and avoid responses from illegal DHCP-servers, unicast messages can be configured to interact with the specified DHCP Relay Agent. Relay Agent can be individually started for each separate VLAN. The service allows processing only for the packets, which have only one 802.1q tag.

• Step 1. Create an L3 interface by specifying the IP address of the VLAN the service is provided for. If the address of the DHCP server is in the same network as the management interface, skip Step 3. If the DHCP server is in the VLAN, which is specified in cross-connect, the IP address of the interface being created should be in the same network as the DHCP server, and you should skip Step 3.

  LTP-8X(switch)(config)# vlan 2000 LTP-8X(switch)(config-vlan)# ip address 10.10.10.1/32

  
  

• Step 2. Specify up to 3 addresses of DHCP servers.

  LTP-8X(switch)(config-vlan)# ip dhcp relay 192.168.56.1 LTP-8X(switch)(config-vlan)# ip dhcp relay 192.168.56.2

  
  

• Step 3. Create an L3 interface by specifying the IP address of the VLAN, which is used for switching in the network where the DHCP server is located.

  LTP-8X(switch)(config)# vlan 1209 LTP-8X(switch)(config-vlan)# ip address 192.168.209.240/24

  
  

• Step 4. If the addresses of the DHCP servers are located after the router available after the specified L3 interface, configure a static route. 
  

  LTP-8X# configure terminal LTP-8X(config)# ip route prefix 192.168.56.0 mask 24 gateway 192.168.209.5 LTP-8X(config)# do commit

  
  

• Step 5. If VLAN in which interception of DHCP requests is implemented is the same as management VLAN of OLT (e.g. OLT connects to only one VLAN or traffic untagged), you need to explicitly enable redirection of DHCP requests on the VLAN.
  

  LTP-8X(switch)(config)# vlan 1209 LTP-8X(switch)(config-vlan)# ip dhcp relaying

  
  

PPPoE Intermediate Agent configuration

This chapter describes configuration of PPPoE Intermediate Agent of the terminal.

PPPoE Intermediate Agent is used to provide BRAS with additional information about a received PADI request. This may include information about the terminal running PPPoE Intermediate Agent as well as information about the ONT, which sent the PADI request. PADI packets are modified by interception and further processing in the terminal CPU.

BRAS analyses the Vendor Specific tag and identifies the ONT. PPPoE Intermediate Agent forms or rewrites the Vendor Specific tag using a specified format. Vendor Specific tags are especially useful for networks, which have no private VLANs dedicated for each user.

PPPoE Intermediate Agent supports configurable formats for Circuit ID and Remote ID. The format of the suboptions is configured with the help of the tokens listed in Table 25. The placeholders will be replaced with corresponding values, while the rest of the words will be passed as is.

Table 25 — Vendor Specific tag tokens

In addition to vendor specific tag support, PPPoE Intermediate Agent has some more functions related to network security. It provides protection from DoS attacks by setting a threshold for intensity of PADI messages, which are received from ONT. Exceeding the threshold blocks PADI requests. The blocking time can be configured.

PPPoE Intermediate Agent also limits the number of simultaneous PPPoE sessions. The restriction can be set for both the total number of terminal sessions and for every ONT separately.

PPPoE Intermediate Agent profile configuration

To configure a PPPoE Intermediate Agent profile, the following steps should be taken.

• Step 1. Switch to the PPPoE Intermediate Agent profile.

  LTP-8X# configure terminal LTP-8X(config)# profile pppoe-ia pppoe-ia-00 LTP-8X(config-pppoe-ia)("pppoe-ia-00")#

  
  

• Step 2. Enable PPPoE traffic processing with the enable command.

  LTP-8X(config-pppoe-ia)("pppoe-ia-00")# enable

  
  

• Step 3. Specify the vendor specific tag format with the help of the format circuit-id and format remote-id commands. A list of possible tokens is given in Table 25.

  LTP-8X(config-pppoe-ia)("pppoe-ia-00")# format circuit-id "%HOSTNAME%" LTP-8X(config-pppoe-ia)("pppoe-ia-00")# format remote-id "%PONSERIAL%:%GEMID%"

  
  

• Step 4. Enable DoS attack protection with the help of the dos-block command if needed. Specify a threshold for the number of DHCP queries per second that will block queries when exceeded. Use the dos-block packet-limit command for it. Use the dos-block block-time command to specify the blocking time in seconds. 
  

  LTP-8X(config-pppoe-ia)("pppoe-ia-00")# dos-block LTP-8X(config-pppoe-ia)("pppoe-ia-00")# dos-block packet-limit 200 LTP-8X(config-pppoe-ia)("pppoe-ia-00")# dos-block block-time 300

  
  

• Step 5. Set the limits of PPPoE sessions by using the sessions-limit command.
  

  LTP-8X(config-pppoe-ia)("pppoe-ia-00")# sessions-limit 128 per-user 2

  If there is no need to limit sessions for all ONTs, pass unlimited parameter in session-limit per-user command.

  LTP-8X(config-pppoe-ia)("pppoe-ia-00")# sessions-limit per-user unlimited

  If you need to disable limiting session for specified ONT (might be useful for SFP-ONU) and save limiting for others, define limiting globally in the profile and disable it in the interface ont settings.

  LTP-8X(config-pppoe-ia)("pppoe-ia-00")# sessions-limit 8192 per-user 2 LTP-8X(config-pppoe-ia)("pppoe-ia-00")# exit LTP-8X(config)# interface ont 0/0 LTP-8X(config)(if-ont-0/0)# pppoe-sessions-unlimit

  
  

• Step 6. Apply the changes by using the commit command. 
  

  LTP-8X(config-pppoe-ia)("pppoe-ia-00")# do commit

  
  

  To apply the changes, the OLT should be reconfigured.

  
  

Active PPPoE sessions monitoring

Enabling PPPoE-IA allows active PPPoE sessions to be monitored. To view the list of sessions, use the following command.

LTP-8X(config)(if-ont-0/4)# do show interface gpon-port 0 pppoe session 
PPPoE sessions (1):
 ## Serial            GPON-port Ont ID  Port  Client             Session ID   Duration    Unblock
 1  454C54586700008C  0         4        353   A8:F9:4B:E3:16:5C  0x0003       0:00:27     0:00:00

Disabling session monitoring

The session monitoring is enabled in PPPoE-IA by default. Due to the fact that system resources are used for each session, in this mode, there are 8192 sessions to be initialized through the OLT (the maximum session-limit value).

If you need to bypass this limit and save opportunity to fill the Vendor-Specific tag fields, you can disable the monitoring. Use the following command.

LTP-8X(config-pppoe-ia)("pppoe-ia-00")# no sessions-monitoring enable 
LTP-8X(config-pppoe-ia)("pppoe-ia-00")# do commit

To enable the monitoring, use the command:

LTP-8X(config-pppoe-ia)("pppoe-ia-00")# sessions-monitoring enable 
LTP-8X(config-pppoe-ia)("pppoe-ia-00")# do commit

IP Source Guard configuration

The IP Source Guard function allows restriction of unauthorised usage of IP addresses in the network by linking IP and MAC addresses of the source to a specific service on a specific ONT. There are two operation modes:

1. To enable transmission of any traffic from clients, it is necessary to specify an explicit match between MAC and IP addresses of client equipment.
2. Client equipment obtains its address via the DHCP protocol. Based on data exchange between client equipment and the DHCP server, a DCHP snooping table is generated on the OLT that contains MAC-IP-GEM port matches and information about lease period. Only the packets with source MAC and source IP fields matching the records in the DHCP snooping table are passed from the client. To support client equipment with static IP addresses, static entries can be created in the dynamic mode.

IP Source Guard configuration

• Step 1. Switch to the configure view.

  LTP-8X# configure terminal

  
  

• Step 2. Enable IP Source Guard and specify the mode.

  LTP-8X(config)# ip source-guard enable LTP-8X(config)# ip source-guard mode dynamic

  
  

• Step 3. Apply the changes by using the do commit command.

  LTP-8X(config)# do commit

  
  

To enable DHCP session reset for a device with the same MAC address, there is an option:

LTP-8X(config)# ip source-guard one-dynamic-binding-for-MAC

It will automatically overwrite the old session with the new one.

To add static matches, use the following command:

LTP-8X(config)# ip source-guard bind ip <IP> mac <MAC> interface-ont <ONT> service <NUM>

Where:

• IP — IP address of client equipment in X.X.X.X format;
• МАС — MAC address of client equipment in ХХ:XX:XX:XX:XX:XX format;
• ONT — ONT identifier in SLOT_ID/CNANNEL_ID/ONT_ID format;
• NUM — ONT service number, through which traffic with specific addresses will be transmitted, from 0 to 7.

To disable IP Source Guard and remove static matches, use the negative no command.

LTP-8X(config)# no ip source-guard enable 
LTP-4X(config)# no ip source-guard bind ip <IP>

In case of OLT power supply loss, entries of DHCP snooping table might be lost. In this case the service will not work until the address is prolonged or received again. The problem usually occurs when lease time is long. You may solve the problem by saving of snooping table in non-volatile memory:

• Step 1. Configure saving  of IP Source Guard entries by timer.

  LTP-8X(config)# ip source-guard database enable LTP-8X(config)# ip source-guard database update-freq 1020

  
  

• Step 2. If necessary, disable IP Source-Guard in the specified VLAN.

  LTP-8X(config)# ip source-guard ignore-vlan 10 LTP-8X(config)# ip source-guard ignore-vlan 20 LTP-8X(config)# ip source-guard mode dynamic

  
  

• Step 3. Apply changes by the do commit command.

  LTP-8X(config)# do commit

  
  

• Step 4. To view information about the status, mode, and static matches, use the show command.

  LTP-8X# show ip source-guard IP Source Guard: Enabled: true Mode: dynamic Database enabled: true Database update frequency: 1020 Bind [0]: Ip: 192.168.200.90 Mac: 00:22:B0:50:59:71 Interface-ont: 0/4 Service: 2 Vlan [10] Allowed Vlan [20] Allowed

  
  

Configuring multicast traffic between ONTs within the same tree

The functionality allows you to turn multicast traffic to the same port from which it been received. The configuration consists of two parts: vlan configuration, multicast in which pon-port should be deployed, and on which the functional will operate.

Configuration:

• Step 1. Switch to the view of vlan whose settings you want to change.

  LTP-8X# switch LTP-8X(switch)# configure terminal LTP-8X(switch)(config)# vlan 400 LTP-8X(switch)(config-vlan)#

  
  

• Step 2. Enable multicast loopback.

  LTP-8X(switch)(config-vlan)# multicast loopback enable

  
  

• Step 3. Return to the config view and switch to the view interface whose settings you want to change.
  

  LTP-8X(switch)(config-vlan)# exit LTP-8X(switch)(config)# interface pon-port 4

  
  

• Step 4. Enable multicast loopback and apply the changes.
  

  LTP-8X(switch)(config-if)# multicast loopback enable LTP-8X(switch)(config-if)# commit

  
  

ONT configuration

Service Models

This chapter considers main terms and classification of service models.

In general, a service model is based on a method which describes how the services are provided: «VLAN for Subscriber» or «VLAN for Service». The VLAN for Service architecture means that a service VLAN (S-VLAN) is used to provide all users with a certain service. The VLAN for Subscriber architecture implies that a client VLAN (C-VLAN) is used to provide a user with multiple services. These methods are often combined in practice and form a hybrid model, which uses S-VLAN and C-VLAN simultaneously.

VLAN for Subscriber architecture

A separate VLAN is used for each subscriber in the C-VLAN model. A dedicated C-VLAN is used to provide services to each user between the OLT and service routers. Service GEM ports are created for every OLT service between every ONT and the OLT. When a service request is generated upstream, records are added to the MAC table in the OLT according to C-VLAN. In case of downstream traffic, a corresponding GEM port is determined for a definite service according to the MAC table in the OLT.

If the destination address of the downstream transmission is unknown (broadcast or unknown unicast), i. e. the GEM port cannot be determined, two options are available:

• transmission through a dedicated broadcast GEM port;
• transmission to all GEM ports, which correspond to the services provided to the subscriber.

The destination address, in case it is unknown (broadcast or unknown unicast), will be determined based on the method implemented in a definite service model.

The architecture of this service model is shown in figure below.

Figure 29 — "VLAN for Subscriber" service model architecture

VLAN for Service architecture

The S-VLAN model has a separate VLAN for every service. Consider its operation on an example of an abstract S-VLAN 100 service.

S-VLAN 100 is used between the OLT and service routers that is global for all subscribers in terms of this service. When a service request is generated upstream, records are added to the MAC table in the OLT according to S-VLAN and subscriber's MAC address. In case of downstream traffic, a corresponding subscriber of the service is determined based on the MAC table.

If the destination address of the downstream transmission is unknown (broadcast or unknown unicast), i. e. the GEM port cannot be determined, two options are available:

• transmission through a dedicated broadcast GEM port (traffic is transmitted to all subscribers);
• transmission to every subscriber through a GEM port corresponding to the service.

The destination address, in case it is unknown (broadcast or unknown unicast), will be determined based on the method implemented in a definite service model.

The architecture of this service model is shown in figure below.

Figure 30 — "VLAN for Service" service model architecture

Operating principle

The configuration model concept is used for implementation of different service models in the terminal. A configuration model defines general principles for data communication channelling for both OLT and ONTs.

• Model 1 is an implementation of the VLAN for Subscriber service model. The model does not have dedicated broadcast GEM ports and uses U-VLAN on the ONT side.
• Model 2 is an implementation of the VLAN for Service service model. This model uses a dedicated broadcast GEM port.
• Model 3 is an implementation of the VLAN for Service service model. This model uses a dedicated broadcast GEM port. It differs from Model 2 by the order of S-VLAN to U-VLAN modification.

Table 26 — Service Models

Model 1

Consider an example of Model 1 implementation.
The scheme of this service model is shown in the Figure 31.

Figure 31 — Service Model 1 scheme

A C-VLAN is used between an ONT and service routers (BRAS, VoIP SR) that encapsulate services for one subscriber (one ONT), such as VoIP, Internet, and IPTV unicast. An S-VLAN that is global for all subscribers (ONTs) is used for the TR-069 management service. Corresponding GEM ports are created for every OLT service between the ONTs and OLT. A dedicated MC-VLAN is used for multicast transmissions.

The OLT casts C-VLAN (for VoIP, Internet, and IPTV unicast) or S-VLAN (for TR-069) for every service into a corresponding U-VLAN. An ONT associates the U-VLAN with corresponding ONT interfaces or program modules. For example, the TR-069 service is associated with a TR-069 client with the help of a corresponding interface. The VoIP, Internet, and IPTV unicast services can operate in the router or bridge modes depending on the ONT configuration. The chart shows all services configured in the router mode.

Broadcast and unknown unicast traffic is transmitted in this model by replicating a corresponding packet (broadcast or unknown unicast) to the OLT. C-VLAN replicates services to all associated GEM ports and at the same time translates data to the corresponding U-VLAN for each service. The TR-069 service is replicated between the corresponding GEM ports of all subscribers (ONTs). Thus, the model implements "VLAN for Subscriber" for the VoIP, Internet, and IPTV unicast services, but uses "VLAN for Service" for the TR-069 service.

Model 2

Consider an example of Model 2 implementation.

The chart of this service model is shown in the following figure.

Figure 32 — Service Model 1 scheme

Dedicated S-VLANs are used between the OLT and service routers (BRAS, VoIP SR) for each of the following services: VoIP, Internet, IPTV unicast, TR-069. These S-VLANs are common for all subscribers (ONTs). Corresponding GEM ports are created for every OLT service between the ONTs and OLT. A dedicated MC-VLAN is used for multicast transmissions.

OLT transmits S-VLAN into a corresponding U-VLAN for each service. An ONT associates the U-VLAN with corresponding ONT interfaces or program modules. For example, the TR-069 service is associated with a TR-069 client with the help of a corresponding interface. The VoIP, Internet, and IPTV unicast services can operate in the router or bridge modes depending on the ONT configuration. The chart shows all services configured in the router mode.

All broadcast and unknown unicast traffic is redirected to a dedicated broadcast GEM port in this model. Broadcast and unknown unicast packets are sent to U-VLAN (for the VoIP, Internet, and IPTV unicast services) in the ONT.

This model is similar to Model 3 except the following: transmission of C-VLAN to U-VLAN is performed on the OLT side, while the VoIP, Internet, and IPTV unicast traffic comes to U-VLAN in the ONT.

Thus, the model implements "VLAN for Service" for the VoIP, Internet, IPTV unicast, and TR-069 services.

Model 3

Consider an example of Model 3 implementation.

The chart of this service model is shown in the following figure.

Dedicated S-VLANs are used between the OLT and service routers (BRAS, VoIP SR) for each of the following services: VoIP, Internet, IPTV unicast, TR-069. These S-VLANs are common for all subscribers (ONTs). Corresponding GEM ports are created for every OLT service between the ONTs and OLT. A dedicated MC-VLAN is used for multicast transmissions.

The VoIP, Internet, IPTV, and TR-069 unicast services are associated with S-VLAN in an ONT. The ONT transmits S-VLAN into a corresponding U-VLAN for each service. An ONT associates the U-VLAN with corresponding ONT interfaces or program modules. For example, the TR-069 service is associated with a TR-069 client with the help of a corresponding interface. The VoIP, Internet, and IPTV unicast services can operate in the router or bridge modes depending on the ONT configuration. The chart shows all services configured in the router mode.

All broadcast and unknown unicast traffic is redirected to a dedicated broadcast GEM port in this model. Broadcast and unknown unicast packets come to S-VLAN in the ONT. These packets are transmitted into the corresponding U-VLANs on the ONT side. In this case, broadcast and unknown unicast are replicated neither in the OLT nor in the ONT since every service has a separate S-VLAN for broadcast and unknown unicast traffic.

Figure 33 — Service Model 3 scheme

Thus, the model implements "VLAN for Service".

Model configuration

• Step 1. Check the current configuration with the help of the show gpon olt configuration command.

  LTP-8X# show gpon olt configuration: . . . Datapath: Model: model2 Broadcast gem port: 4095 Multicast gem port: 4094 . . .

  
  

• Step 2. Set the model by using the gpon olt model command.

  LTP-8X# configure terminal LTP-8X(config)# gpon olt model 3

  
  

• Step 3. Apply the changes by using the commit command.

  LTP-8X(config)# do commit

  
  

ONT licensing

By default, OLT supports only ELTEX ONTs operation. To enable any third-party ONTs, OLT requires a license. To purchase the license, contact ELTEX Marketing Department.

Loading a license file to OLT

A license is a text file of the following format:

{
"version":"<VER>",
"type":"all",
"count":"<count>",
"sn":"<SN>",
"mac":"<MAC>",
"sign":"<hash>"
}

Where:

• VER — license file version number;
• count — number of third-party ONTs that can run on OLT;
• SN — LTP serial number;
• MAC — LTP MAC address;
• hash — license file digital signature.

There are two ways to load a license to OLT.

1. Use the copy command:

   LTP-8X# copy tftp://<IP>/<PATH> fs://license 
   Download file from TFTP-server.. 
   License successfully installed. Please reboot device for changes to make effect

   Where:

   • IP — TFTP server IP address;
   • PATH — license file path on TFTP server.

2. Use CLI:

   LTP-8X# license set """<license>""" 
   License saved. 
   License successfully installed.

   Where:

   • license — full content of the license file including curly brackets.
     To view information about the license on the device, use the show command.

     LTP-8X# show license Active license information: License valid: yes Version: 1.2 Board SN: GP2B000022 Licensed vendor: all Licensed ONT count: 10 Licensed ONT online: 3

     The license file remains after device reload, firmware update, and configuration load. If OLT is reset to factory settings, the license is also deleted.

Deleting a license file from OLT

If necessary, you can delete a previously installed license using the no license command.

LTP-8X# no license 
License file removed. 
License successfully deleted from system. 
LTP-8X# show license 
Active license information: 
	No license installed

EasyСonfig. EasyMode

LTP-X EasyMode

EasyMode is a function set of LTP optical terminals. EasyMode is dedicated to fast GPON deployment according to realized service model. EasyMode allows providers to configure Triple Play services promptly.

EasyMode can be used for:

• Acquaintance with GPON technology and ELTEX equipment;
• Fast testing of the main capabilities of the equipment;
• Automatic configuring of the equipment on a network.

Software and hardware requirements

The EasyMode is supported by the hardware of B and C revisions and by NTU terminals. For EasyMode operation, it is necessary to use the software no below than:

Detailed information about the easy configuration mode is contained in the LTP EasyMode manual document, which can be found in the Download Center.

Automatic ONT activation

Automatic activation speeds up the process of adding new ONTs to an existing configuration with the necessary profiles.

Automatic ONT activation configuration

• Step 1. Enable automatic ONT activation.

  LTP-8X(config)# gpon olt auto-activation ont enable

  
  

• Step 2. If necessary, specify a template that will be assigned to all auto-activated ONTs by default.

  LTP-8X(config)# gpon olt auto-activation ont default template template-00

  
  

• Step 3. If necessary, specify a template that will be assigned to ONT depending on their type (EquipmentID), during automatic activation.

  LTP-8X(config)# gpon olt auto-activation ont type NTU-1 template NTU1_2149

  
  

• Step 4. If necessary, specify the gpon-port on which this auto-activation rule will trigger.

  TP-8X(config)# gpon olt auto-activation ont type NTU-1 template template-00 gpon-port 0-2

  
  

• Step 5. Apply the changes by using the commit command. 
  

  LTP-8X(config)# do commit

  
  

ONT configuration

This chapter describes general principles of ONT configuration. It also defines configuration profiles.

ONT is configured with the help of a profile, which defines high-level expression of data communication channels. All operations related to channel creation are performed automatically. The way data communication channels are created depends on the selected service model.

ONT configuration includes assignment of configuration profiles and specification of ONT specific parameters. Configuration profiles allow general parameters to be set for all or for a range of ONTs. Profile parameters may include, for instance, DBA settings, configuration of VLAN operations in OLT and ONT, settings of Ethernet ports in ONT. Specific ONT parameters allow each separate ONT to have its own settings specified. Such settings include, for example, GPON password, subscriber's VLAN, etc.

General principles of configuration

Service is the key term of ONT configuration. This term completely includes a communication channel, through which data is transferred from the interfaces located on the front panel of the terminal (see section Interface configuration) to users' ONT ports. There are two service profiles: cross-connect and dba. The cross-connect profile creates a GEM service port, the dba profile allocates an Alloc-ID for this ONT and associates  a corresponding GEM port to the Alloc-ID.

Table 27 — ONT profiles

Figure 34 — ONT scope of operation

ONT profiles configuration

Cross-connect profile configuration

• Step 1. To configure a cross-connect profile, first you need to specify whether the service will be routed (transmitted through an ONT router) or bridged (use bridge connection). This can be done by changing the model parameter.
• Step 2. Then, you need to specify a service type in the type parameter. Some service types require the iphost parameter to be set that allows you to choose a definite instance of IP interface in the ONT.
• Step 3. A VLAN is configured in a cross-connect profile with the help of the following parameters: tag mode, outer vid, outer cos, inner vid, user vid, and user cos.
• Step 4. Tag mode enables upstream Q-in-Q mode; outer vid, outer cos, and inner vid specify internal and external Q-in-Q tags correspondingly. The CoS value of the internal tag is copied from the external one in this case. If the Q-in-Q mode is not used, only the outer vid and outer cos parameters are valid. The user vid and user cos parameters allow a tag to be specified, which will be used on the ONT side.
• Step 5. The mac-table-limit parameter allows restriction of records number in the MAC table of the OLT for this service.
• Step 6. The priority parameter allows allocation of all services of one T-CONT into queues with priorities (if ONT supports this method).

DBA profile configuration

This profile configures dynamic bandwidth allocation (DBA). These parameters allow specification of any T-CONT type described in G.984.3.

• Step 1. First of all, choose sla class to define the basic DBA algorithm.
• Step 2. After that, configure sla status-reporting to define the type of ONT queues status report.
• Step 3. The bandwidth fixed, bandwidth guaranteed, and bandwidth besteffort parameters define the fixed, guaranteed, and best-effort bandwidth correspondingly.

DBA configuration is described in details in DBA configuration.

Shaping profile configuration

Configuration of this profile allows restriction of upstream and downstream services.

• Step 1. Downstream restriction in OLT uses the policing algorithm. The restriction can either use one policer for all services or individual policers for each separate service. This is specified in the one-policer parameter. When one policer is used for all services, only policer 0 should be specified; otherwise, policers for all services should be adjusted.
• Step 2. Upstream restriction in ONT uses the shaping algorithm. You can specify either a global shaper or individual shapers for unicast, multicast, and broadcast traffic (ONT functionality).

The configuration of shaping profile represented detailed in Shaping configuration. 

Ports profile configuration

The ports profile allows you to group ports in ONT. The profile also contains IGMP and multicast setting as they are separately adjusted for each port.
You can adjust up to 4 Ethernet ports and a VEIP virtual port, which will serve as a link between the OMCI and RG domains in ONT.

• Step 1. Ethernet ports are grouped with the help of the bridge-group parameter. Value 0 means that the port is associated with the RG domain (router). Other values mean port association with the OMCI domain, i. e. the port can be directly used in OLT to establish a data communication channel.
• Step 2. IGMP and multicast configuration is described in detail in IGMP and MLD configuration in terminal switch.

Management profile configuration

The management profile enables specific configuration of the TR-069 management protocol, namely configuration of a TR-client in ONT.

• Step 1. The omci-configuration parameter defines the TR client configuration which can be done either automatically with DHCP (all other parameters of the profile are not used in this case) or with OMCI using the profile settings.
• Step 2. The url parameter corresponds to the address of the auto configuration server (ACS), which access parameters are defined by the username and password parameters.

The TR-069 protocol configuration is described in detail in VoIP configuration.

Re-defining the parameters set in the cross-connect profile. Custom parameters

In some cases, it is necessary to define unique VLAN ID/802.1p tags for ONT. For solving this problem, you can use custom parameters instead of creating a profile.

Custom svid

LTP-8X# configure terminal 
LTP-8X(config)# interface ont 0/0 
LTP-8X(config)(if-ont-0/0)# service 0 custom svid 1234

If cross-connect profile defined in the specified service has tag-mode double-tagged, VLAN ID of the external tag will be replaced. For single-tagged service, VLAN ID of the single tag will be replaced.

Custom cvid

LTP-8X# configure terminal 
LTP-8X(config)# interface ont 0/0 
LTP-8X(config)(if-ont-0/0)# service 0 custom cvid 1234

If cross-connect profile defined in the specified service has tag-mode double-tagged, VLAN ID of the internal tag will be replaced. For single-tagged service, VLAN ID of the single tag will be replaced.

Сustom cos

LTP-8X# configure terminal 
LTP-8X(config)# interface ont 0/0 
LTP-8X(config)(if-ont-0/0)# service 0 custom cos 3

Replaces 802.1p field in a tag.

ONT configuration procedure

Figure below shows a step-by-step procedure of ONT configuration.

Figure 35 — ONT configuration procedure

• Step 1. Prior to proceed to ONT configuration, add an ONT into the OLT configuration. For an ONT to be added and configured, it does not need to be physically connected to the OLT. You can view the list of inactive ONTs with the help of the show interface ont <gpon-port> unactivated command.

  LTP-8X# show interface ont 0 unactivated ----------------------------------- GPON-port 0 ONT unactivated list ----------------------------------- ## Serial ONT ID Channel Status RSSI[dBm] Version EquipmentID 1 ELTX5C00008C n/a 0 UNACTIVATED n/a n/a n/a 2 ELTX1A00001A n/a 0 UNACTIVATED n/a n/a n/a Total ONT count: 2

  
  

• Step 2. To specify ONT settings, go to the corresponding view with the help of the interface ont command. Specify ONT serial number, password, or their combination.

  LTP-8X# configure terminal LTP-8X(config)# interface ont 0/0 LTP-8X(config)(if-ont-0/0)# serial ELTX5C00008C LTP-8X(config)(if-ont-0/0)# password 0000000000

  
  

  NTU-SFP-100 uses PON-Password «default» by default.

  
  

• Step 3. Apply the configuration by using the commit command.

  LTP-8X(config)(if-ont-0/0)# do commit

  
  

• Step 4. View the ONT configuration by using the do show interface ont 0/0 configuration command.
  

  LTP-8X(config)(if-ont-0/0)# do show interface ont 0/0 configuration ----------------------------------- [ONT0/0] configuration ----------------------------------- Description: ’’ Status: UP Serial: ELTX5C00008C Password: ’0000000000’ Fec up: false Downstream broadcast: true Downstream broadcast filter: true Ber interval: none Ber update period: 60 Rf port state: disabled Omci error tolerant: false Profile shaping: shaping-00 ONT Profile Shaping 0 Profile ports: ports-00 ONT Profile Ports 0 Profile management: unassigned Custom model: none Template: unassigned

  
  

Model 1

Consider configuration of a data communication channel, which is based on Model 1 and implements "VLAN for Subscriber" (except for the control service, which is implemented in S-VLAN).

Routed mode

Configure the Internet (PPPoE), IPTV unicast, and management services via the TR-069 protocol. Set the VLAN ID for the subscriber to 200, U-VLAN IDs to 10 and 11 for each service respectively. Traffic between the OLT and ONT will be transmitted into VLAN 10 and 11. Multicast traffic will be transmitted to VLAN 98, management will be performed via VLAN 9.

Figure 36 — Routed service abstract representation for Model 1

• Step 1. Assign a service model.

  LTP-8X# configure terminal LTP-8X(config)# gpon olt model 1

  
  

• Step 2. Create an Internet cross-connect profile for the configuration. By default, the profile uses a routed service. Configure a U-VLAN with the help of the user vid command (it equals 10 for the first service in this case).

  LTP-8X(config)# profile cross-connect Internet LTP-8X(config-cross-connect)("Internet")# user vid 10

  

• Step 3. Check the changes made.

  LTP-8X(config-cross-connect)("Internet")# do show profile cross-connect Internet Name: ’Internet’ Description: ’ONT Profile Cross Connect 1’ Model: ont-rg Bridge group: - Tag mode: single-tagged Outer vid: 1 Outer cos: unused Inner vid: - U vid: 10 U cos: unused Mac table entry limit: unlimited Type: general Iphost eid: 0 Priority queue: 0

  
  

• Step 4. By analogy with the described above, create another cross-connect profile (UC_IPTV) for the second service and configure it with U-VLAN 11.

  LTP-8X(config)# profile cross-connect UC_IPTV LTP-8X(config-cross-connect)("UC_IPTV")# user vid 11

  
  

• Step 5. Check the changes made.

  LTP-8X(config-cross-connect)("UC_IPTV")# do show profile cross-connect UC_IPTV Name: ’UC_IPTV’ Description: ’ONT Profile Cross Connect 2’ Model: ont-rg Bridge group: - Tag mode: single-tagged Outer vid: 1 Outer cos: unused Inner vid: - U vid: 11 U cos: unused Mac table entry limit: unlimited Type: general Iphost eid: 0 Priority queue: 0

  
  

  Use web configurator or ACS to adjust necessary settings for these services in the ONT.

  
  

• Step 6. Specify DBA parameters. To do this, create a dba profile and adjust the corresponding settings. We set a value of a guaranteed bandwidth in this example.

  LTP-8X(config)# profile dba AllServices LTP-8X(config-dba)("AllServices")# bandwidth guaranteed 500

  

• Step 7. Check the changes made.

  LTP-8X(config-dba)("AllServices")# do show profile dba AllServices Name: 'AllServices' Description: 'ONT Profile DBA 1' Dba: Sla data: Service class: type5 Status reporting: nsr Alloc size: 0 Alloc period: 0 Fixed bandwidth: 0 Guaranteed bandwidth: 500 Besteffort bandwidth: 1244000 T-CONT allocation scheme: share T-CONT with same profile

  
  

• Step 8. To configure multicast traffic, create a ports profile, specify groups allowed for viewing, a VLAN to send IGMP packets, and the rules for relaying multicast traffic in the downstream direction across the VLAN for the UC_IPTV service. 
  

  LTP-8X(config)# profile ports Ports1 LTP-8X(config-ports)("Ports1")# igmp multicast dynamic-entry 0 vid 98 LTP-8X(config-ports)("Ports1")# igmp multicast dynamic-entry 0 group 224.0.0.1 239.255.255.255 LTP-8X(config-ports)("Ports1")# veip upstream vid 11 LTP-8X(config-ports)("Ports1")# veip upstream tag-control replace-tag LTP-8X(config-ports)("Ports1")# veip downstream vid 11 LTP-8X(config-ports)("Ports1")# veip downstream tag-control replace-tag

  
  

• Step 9. Check the changes made.

  LTP-8X(config-ports)("Ports1")# do show profile ports Ports1 ... Multicast dynamic entry [0]: Vlan id: 98 First group ip: 224.0.0.1 Last group ip: 239.255.255.255 Veip: Multicast enable: true Multicast port settings: Upstream igmp vid: 11 Upstream igmp prio: 0 Upstream igmp tag control: replace tag Downstream multicast vid: 11 Downstream multicast prio: 0 Downstream multicast tag control: replace tag Max groups: 0 Max multicast bandwidth: 0

  

• Step 10. Configure a management profile. To do this, create a cross-connect profile and assign it with the management type.
  

  LTP-8X(config)# profile cross-connect management LTP-8X(config-cross-connect)("management")# outer vid 9 LTP-8X(config-cross-connect)("management")# type management

  
  

• Step 11. Check the changes made.

  LTP-8X(config-cross-connect)("management")# do show profile cross-connect management Name: 'management' Description: 'ONT Profile Cross Connect 2' Model: ont-rg Bridge group: - Tag mode: single-tagged Outer vid: 9 Outer cos: unused Inner vid: - U vid: untagged U cos: unused Mac table entry limit: unlimited Type: management IP host index: 0 Priority queue: 0

  

• Step 12. Assign the created profiles in the ONT. 
  

  LTP-8X(config)# interface ont 0/0 LTP-8X(config)(if-ont-0/0)# service 0 profile dba AllServices LTP-8X(config)(if-ont-0/0)# service 0 profile cross-connect Internet LTP-8X(config)(if-ont-0/0)# service 1 profile dba AllServices LTP-8X(config)(if-ont-0/0)# service 1 profile cross-connect UC_IPTV LTP-8X(config)(if-ont-0/0)# profile ports Ports1 LTP-8X(config)(if-ont-0/0)# service 2 profile dba AllServices LTP-8X(config)(if-ont-0/0)# service 2 profile cross-connect management LTP-8X(config)(if-ont-0/0)# do show interface ont 0/0 configuration ----------------------------------- [ONT0/0] configuration ----------------------------------- Description: '' Status: UP Serial: ELTX5C00008C ... Service [0]: Profile cross connect: Internet ONT Profile Cross Connect 1 Profile dba: AllServices ONT Profile DBA 1 Service [1]: Profile cross connect: UC_IPTV ONT Profile Cross Connect 2 Profile dba: AllServices ONT Profile DBA 1 Service [2]: Profile cross connect: management ONT Profile Cross Connect 3 Profile dba: AllServices ONT Profile DBA 1 ... Profile ports: Ports1 ONT Profile Ports 1

  
  

• Step 13. VLAN for Subscriber requires a C-VLAN to be assigned for this ONT (subscriber). Assign S-VLAN 200 for the Internet and IPTV services by using the service X custom command (where X – service number). The management service operates in an S-VLAN, therefore no C-VLAN is defined for this service. 
  

  LTP-8X(config)(if-ont-0/0)# service 0 custom cvid 200 LTP-8X(config)(if-ont-0/0)# service 1 custom cvid 200 LTP-8X(config)(if-ont-0/0)# do show interface ont 0/0 configuration ... Service [0]: Profile cross connect: Internet ONT Profile Cross Connect 1 Profile dba: AllServices ONT Profile DBA 1 Custom svlan: 200 Custom CoS: unused Service [1]: Profile cross connect: UC_IPTV Profile dba: AllServices ONT Profile DBA 1 Custom svlan: 200 Custom CoS: Unused

  

• Step 14. Apply the changes by using the commit command. 
  

  LTP-8X(config)(if-ont-0/0)# do commit

  
  

• Step 15. Configure VLAN 200, 201, 9, and 98 in the switch view (see VLAN configuration).
  

  LTP-8X# switch LTP-8X(switch)# configure terminal LTP-8X(switch)(config)# vlan 200,201,98,9 LTP-8X(switch)(config-vlan-range)# tagged front-port 0 LTP-8X(switch)(config-vlan-range)# tagged pon-port 0 – 7 LTP-8X(switch)(config-vlan-range)# exit LTP-8X(switch)(config)# commit LTP-8X(switch)(config)# exit

  
  

• Step 16. Configure IGMP Proxy in the switch view for VLAN 98, enable the IGMP Proxy mode globally, and set the range of allowed IGMP groups. Also, enable IGMP snooping globally.
  

  LTP-8X# switch LTP-8X(switch)# configure terminal LTP-8X(switch)(config)# ip igmp snooping LTP-8X(switch)(config)# ip igmp proxy report range 232.1.0.1 232.1.0.100 from all to 98 LTP-8X(switch)(config)# ip igmp proxy report enable LTP-8X(switch)(config)# commit LTP-8X(switch)(config)# exit

  
  

Bridged mode

Configure the Internet (PPPoE), IPTV unicast, and management services via the TR-069 protocol. Set the subscriber VLAN ID to 200. Configure transmission of tagged traffic to LAN port 1. To do this, set the U-VLAN ID to 10. Traffic to port 2 will be transmitted untagged. Multicast traffic will be transmitted to VLAN 98, management will be performed via VLAN 9.

Figure 37 — Bridged service abstract representation for Model 1

• Step 1. Create an Internet cross-connect profile to configure PPPoE in the bridge. Configure the bridged service specifying the bridge group the ONT port will be connected to (in this case, it is equal to 10 for the first service), define a U-VLAN for transmission of tagged traffic to the port.

  LTP-8X(config)# profile cross-connect Internet LTP-8X(config-cross-connect)("Internet")# bridge LTP-8X(config-cross-connect)("Internet")# bridge group 10 LTP-8X(config-cross-connect)("Internet")# user vid 10

  
  

• Step 2. Check the changes made.

  LTP-8X(config-cross-connect)("Internet")# do show profile cross-connect Internet Name: 'Internet' Description: 'ONT Profile Cross Connect 1' Model: ont Bridge group: 10 Tag mode: single-tagged Outer vid: 1 Outer cos: unused Inner vid: - U vid: untagged U cos: unused Mac table entry limit: unlimited Type: general IP host index: 0 Priority queue: 0

  
  

• Step 3. By analogy with the described above, create another cross-connect profile (UC_IPTV) for the second service and configure it with bridge group 11.

  LTP-8X(config)# profile cross-connect UC_IPTV LTP-8X(config-cross-connect)("UC_IPTV")# bridge LTP-8X(config-cross-connect)("UC_IPTV")# bridge group 11

  
  

• Step 4. Check the changes made.

  LTP-8X(config-cross-connect)("UC_IPTV")# do show profile cross-connect UC_IPTV Name: 'UC_UPTV' Description: 'ONT Profile Cross Connect 2' Model: ont Bridge group: 11 Tag mode: single-tagged Outer vid: 1 Outer cos: unused Inner vid: - U vid: untagged U cos: unused Mac table entry limit: unlimited Type: general IP host index: 0 Priority queue: 0

  

• Step 5. Specify DBA parameters. To do this, create a dba profile and adjust the corresponding settings. We set a value of a guaranteed bandwidth in this example.

  LTP-8X(config)# profile dba AllServices LTP-8X(config-dba)("AllServices")# bandwidth guaranteed 500

  
  

• Step 6. Check the changes made. 
  

  LTP-8X(config-dba)("AllServices")# do show profile dba AllServices Name: 'AllServices' Description: 'ONT Profile DBA 1' Dba: Sla data: Service class: type5 Status reporting: nsr Alloc size: 0 Alloc period: 0 Fixed bandwidth: 0 Guaranteed bandwidth: 500 Besteffort bandwidth: 1244000 T-CONT allocation scheme: share T-CONT with same profile

  
  

• Step 7. Associate the bridge group with an ONT port. To do this, create a ports profile and set the bridge group parameter to 10 for the eth0 port and to 11 for the eth1 port. Set the rules of multicast traffic processing for port 1.
  

  LTP-8X(config)# profile ports Ports1 LTP-8X(config-ports)("Ports1")# port 0 bridge group 10 LTP-8X(config-ports)("Ports1")# port 1 bridge group 11 LTP-8X(config-ports)("Ports1")# igmp multicast dynamic-entry 0 vid 98 LTP-8X(config-ports)("Ports1")# igmp multicast dynamic-entry 0 group 224.0.0.1 239.255.255.255 LTP-8X(config-ports)("Ports1")# port 1 multicast LTP-8X(config-ports)("Ports1")# port 1 igmp downstream vid 98 LTP-8X(config-ports)("Ports1")# port 1 igmp downstream tag-control remove-tag

  

• Step 8. Check the changes made.

  LTP-8X(config-ports)("Ports1")# do show profile ports Ports1 ... Igmp settings: ... Multicast dynamic entry [0]: Vlan id: 98 First group ip: 224.0.0.1 Last group ip: 239.255.255.255 ... Port [0]: Speed: auto Duplex: auto Bridge group: 10 Spanning tree for bridge group: false Multicast enable: true Multicast port settings: Upstream igmp vid: 1 Upstream igmp prio: 0 Upstream igmp tag control: pass Downstream multicast vid: 1 Downstream multicast prio: 0 Downstream multicast tag control: pass Max groups: 0 Max multicast bandwidth: 0 Shaper downstream: Enable: false Commited rate: 1000000 Shaper upstream: Enable: false Commited rate: 1000000 Port [1]: Speed: auto Duplex: auto Bridge group: 11 Spanning tree for bridge group: false Multicast enable: false Multicast port settings: Upstream igmp vid: 1 Upstream igmp prio: 0 Upstream igmp tag control: pass Downstream multicast vid: 98 Downstream multicast prio: 0 Downstream multicast tag control: remove-tag Max groups: 0 Max multicast bandwidth: 0 Shaper downstream: Enable: false Commited rate: 1000000 Shaper upstream: Enable: false Commited rate: 1000000

  

• Step 9. Configure a management profile. To do this, create a cross-connect profile and assign it with the management type and the bridge model.
  

  LTP-8X(config)# profile cross-connect management LTP-8X(config-cross-connect)("management")# bridge LTP-8X(config-cross-connect)("management")# outer vid 9 LTP-8X(config-cross-connect)("management")# type management

  
  

• Step 10. Check the changes made.

  LTP-8X(config-cross-connect)("management")# do show profile cross-connect management Name: 'management' Description: 'ONT Profile Cross Connect 2' Model: ont Bridge group: 255 Tag mode: single-tagged Outer vid: 9 Outer cos: unused Inner vid: - U vid: untagged U cos: unused Mac table entry limit: unlimited Type: management IP host index: 0 Priority queue: 0

  
  

• Step 11. Assign the created profiles in the ONT. 
  

  LTP-8X(config)# interface ont 0/0 LTP-8X(config)(if-ont-0/0)# service 0 profile dba AllServices LTP-8X(config)(if-ont-0/0)# service 0 profile cross-connect Internet LTP-8X(config)(if-ont-0/0)# service 1 profile dba AllServices LTP-8X(config)(if-ont-0/0)# service 1 profile cross-connect UC_IPTV LTP-8X(config)(if-ont-0/0)# service 2 profile dba AllServices LTP-8X(config)(if-ont-0/0)# service 2 profile cross-connect management LTP-8X(config)(if-ont-0/0)# profile ports Ports1 LTP-8X(config)(if-ont-0/0)# do show interface ont 0/0 configuration ----------------------------------- [ONT0/0] configuration ----------------------------------- Description: '' Enabled: true Serial: ELTX5C00008C Password: '0000000000' Fec up: false Easy mode: false Downstream broadcast: true Downstream broadcast filter: true Ber interval: none Ber update period: 60 Rf port state: disabled Omci error tolerant: false

  
  

  Service [0]: Profile cross connect: Internet ONT Profile Cross Connect 1 Profile dba: AllServices ONT Profile DBA 1 Custom cross connect: disabled Service [1]: Profile cross connect: UC_IPTV ONT Profile Cross Connect 2 Profile dba: AllServices ONT Profile DBA 1 Custom cross connect: disabled Service [2]: Profile cross connect: management ONT Profile Cross Connect 3 Profile dba: AllServices ONT Profile DBA 1 Custom cross connect: disabled Profile shaping: shaping-00 ONT Profile Shaping 0 Profile ports: Ports1 ONT Profile Ports 1 Profile management: unassigned Template: unassigned Pppoe sessions unlimited: false

  
  

• Step 12. VLAN for Subscriber requires a C-VLAN to be assigned for this ONT (subscriber). Assign unique VLAN ID 200 for the Internet and IPTV services by using the service X custom command (where X — service number). The management service operates in an S-VLAN, therefore, settings from the profile are used for the service.
  

  LTP-8X(config)(if-ont-0/0)# service 0 custom svid 200 LTP-8X(config)(if-ont-0/0)# service 1 custom svid 200 LTP-8X(config)(if-ont-0/0)# do show interface ont 0/0 configuration ... Service [0]: Profile cross connect: Service1sh ONT Profile Cross Connect 1 Profile dba: AllServices ONT Profile DBA 1 Custom cross connect: enabled Custom s-vid: 200 Custom c-vid: unused Custom CoS: unused

  
  

• Step 13. Apply the changes by using the commit command.
  

  LTP-8X(config)(if-ont-0/0)# do commit

  
  

• Step 14. Configure VLAN 200 in the switch view (see VLAN configuration).
  

  LTP-8X# switch LTP-8X(switch)# configure terminal LTP-8X(switch)(config)# vlan 200 LTP-8X(switch)(config-vlan)# tagged front-port 0 LTP-8X(switch)(config-vlan)# tagged pon-port 0 – 7 LTP-8X(switch)(config-vlan)# exit LTP-8X(switch)(config)# commit LTP-8X(switch)(config)# exit

  

• Step 15. Configure IGMP Proxy in the switch view for VLAN 98, enable the IGMP Proxy mode globally, and set the range of allowed IGMP groups. Also, enable IGMP snooping globally.
  

  LTP-8X# switch LTP-8X(switch)# configure terminal LTP-8X(switch)(config)# ip igmp proxy report enable LTP-8X(switch)(config)# ip igmp proxy report range 232.1.0.1 232.1.0.100 from all to 98 LTP-8X(switch)(config)# ip igmp snooping LTP-8X(switch)(config)# commit LTP-8X(switch)(config)# exit

  
  

Model 2 

Model 2 is a hybrid of Model 1 and Model 3. It is based on «VLAN for Service». Model 2 services configuration is similar to Model 3.

Model 3

Consider configuration of ONT data communication for Model 3, which implements the «VLAN for Service» principle.

Routed mode

Configure the Internet (PPPoE), IPTV unicast, and management services via the TR-069 protocol. Set the VLAN ID to 200 for Internet, to 201 for IPTV unicast. Services will be provided by operator in these VLANs. Set U-VLANs to 200 and 201 for each service respectively. These VLANs will transmit traffic to the subscriber device. Multicast traffic will be transmitted to VLAN 98, management will be performed via VLAN 9.

Figure 38 — Routed service abstract representation for Model 3

• Step 1. Assign a service model.

  LTP-8X# configure terminal LTP-8X(config)# gpon olt model 3

  

• Step 2. Create an Internet cross-connect profile for the configuration. By default, the profile uses a routed service. Configure a U-VLAN with the help of the u-vid command (it equals 200 for the first service in this case). To assign an S-VLAN, use the outer vid 200 command.

  LTP-8X(config)# profile cross-connect Internet LTP-8X(config-cross-connect)("Internet")# user vid 200 LTP-8X(config-cross-connect)("Internet")# outer vid 200

  
  

• Step 3. Check the changes made.

  LTP-8X(config-cross-connect)("Internet")# do show profile cross-connect Internet Name: 'Internet' Description: 'ONT Profile Cross Connect 1' Model: ont-rg Bridge group: - Tag mode: single-tagged Outer vid: 200 Outer cos: unused Inner vid: - U vid: 200 U cos: unused Mac table entry limit: unlimited Type: general IP host index: 0 Priority queue: 0

  
  

• Step 4. By analogy with the described above, create another cross-connect profile (UC_IPTV) for the second service and configure it with U-VLAN 201, S-VLAN 201.

  LTP-8X(config)# profile cross-connect UC_IPTV LTP-8X(config-cross-connect)("UC_IPTV")# user vid 201 LTP-8X(config-cross-connect)("UC_IPTV")# outer vid 201

  
  

• Step 5. Check the changes made.

  LTP-8X(config-cross-connect)("UC_IPTV")# do show profile cross-connect UC_IPTV Name: 'UC_IPTV' Description: 'ONT Profile Cross Connect 2' Model: ont-rg Bridge group: - Tag mode: single-tagged Outer vid: 201 Outer cos: unused Inner vid: - U vid: 201 U cos: unused Mac table entry limit: unlimited Type: general IP host index: 0 Priority queue: 0

  

• Step 6. Specify DBA parameters. To do this, create a dba profile and adjust the corresponding settings. We set a value of a guaranteed bandwidth in this example.

  LTP-8X(config)# profile dba AllServices LTP-8X(config-dba)("AllServices")# bandwidth guaranteed 500

  
  

• Step 7. Check the changes made.

  LTP-8X(config-dba)("AllServices")# do show profile dba AllServices Name: 'AllServices' Description: 'ONT Profile DBA 1' Dba: Sla data: Service class: type5 Status reporting: nsr Alloc size: 0 Alloc period: 0 Fixed bandwidth: 0

  
  

• Step 8. To configure multicast traffic, create a cross-connect profile and set the VLAN intended for multicast transmission as an S-VLAN and U-VLAN.
  

  LTP-8X(config)# profile cross-connect MC_IPTV LTP-8X(config-cross-connect)("MC_IPTV")# user vid 98 LTP-8X(config-cross-connect)("MC_IPTV")# outer vid 98

  
  

• Step 9. Check the changes made.
  

  LTP-8X(config-cross-connect)("MC_IPTV")# do show profile cross-connect MC_IPTV Name: 'MC_IPTV' Description: 'ONT Profile Cross Connect 3' Model: ont-rg Bridge group: - Tag mode: single-tagged Outer vid: 98 Outer cos: unused Inner vid: - U vid: 98 U cos: unused Mac table entry limit: unlimited Type: general IP host index: 0 Priority queue: 0

  
  

  Use web configurator or ACS to adjust necessary settings for these services in the ONT.

  

• Step 10. After that, to configure multicast traffic, create a ports profile, specify groups allowed for viewing, a VLAN to send IGMP packets, and the rules for relaying multicast traffic in the downstream direction across the VLAN for the UC_IPTV service.
  

  LTP-8X(config)# profile ports Ports1 LTP-8X(config-ports)("Ports1")# igmp multicast dynamic-entry 0 vid 98 LTP-8X(config-ports)("Ports1")# igmp multicast dynamic-entry 0 group 224.0.0.1 239.255.255.255 LTP-8X(config-ports)("Ports1")# veip upstream vid 98 LTP-8X(config-ports)("Ports1")# veip upstream tag-control replace-tag LTP-8X(config-ports)("Ports1")# veip downstream vid 98 LTP-8X(config-ports)("Ports1")# veip downstream tag-control replace-tag

  
  

• Step 11. Check the changes made.

  LTP-8X(config-ports)("Ports1")# do show profile ports Ports1 ... Igmp settings: Multicast dynamic entry [0]: Vlan id: 98 First group ip: 224.0.0.1 Last group ip: 239.255.255.255 ... Veip: Multicast enable: false Multicast port settings: Upstream igmp vid: 98 Upstream igmp prio: 0 Upstream igmp tag control: replace-tag Downstream multicast vid: 98 Downstream multicast prio: 0 Downstream multicast tag control: replace-tag Max groups: 0 Max multicast bandwidth: 0 ...

  
  

• Step 12. Configure a management profile. To do this, create a cross-connect profile and assign it with the management type. 
  

  LTP-8X(config)# profile cross-connect management LTP-8X(config-cross-connect)("management")# outer vid 9 LTP-8X(config-cross-connect)("management")# type management

  

• Step 13. Check the changes made.

  LTP-8X(config-cross-connect)("management")# do show profile cross-connect management Name: 'management' Description: 'ONT Profile Cross Connect 4' Model: ont-rg Bridge group: - Tag mode: single-tagged Outer vid: 9 Outer cos: unused Inner vid: - U vid: untagged U cos: unused Mac table entry limit: unlimited Type: management IP host index: 0 Priority queue: 0

  
  

• Step 14. Assign the created profiles in the ONT.

  LTP-8X(config)# interface ont 0/0 LTP-8X(config)(if-ont-0/0)# service 0 profile dba AllServices LTP-8X(config)(if-ont-0/0)# service 0 profile cross-connect Internet LTP-8X(config)(if-ont-0/0)# service 1 profile dba AllServices LTP-8X(config)(if-ont-0/0)# service 1 profile cross-connect UC_IPTV LTP-8X(config)(if-ont-0/0)# profile ports Ports1 LTP-8X(config)(if-ont-0/0)# service 2 profile dba AllServices LTP-8X(config)(if-ont-0/0)# service 2 profile cross-connect management LTP-8X(config)(if-ont-0/0)# service 3 profile dba AllServices LTP-8X(config)(if-ont-0/0)# service 3 profile cross-connect MC_IPTV

  
  

• Step 15. Check the changes made.

  LTP-8X(config)(if-ont-0/0)# do show interface ont 0/0 configuration ----------------------------------- [ONT0/0] configuration ----------------------------------- Description: '' Enabled: true Serial: ELTX5C00008C Password: '0000000000' Fec up: false Easy mode: false Downstream broadcast: true Downstream broadcast filter: true Ber interval: none Ber update period: 60 Rf port state: disabled Omci error tolerant: false Service [0]: Profile cross connect: Internet ONT Profile Cross Connect 1 Profile dba: AllServices ONT Profile DBA 1 Custom cross connect: disabled

  
  

  Service [1]: Profile cross connect: UC_IPTV ONT Profile Cross Connect 2 Profile dba: AllServices ONT Profile DBA 1 Custom cross connect: disabled Service [2]: Profile cross connect: management ONT Profile Cross Connect 3 Profile dba: AllServices ONT Profile DBA 1 Custom cross connect: disabled Profile shaping: shaping-00 ONT Profile Shaping 0 Profile ports: Ports1 ONT Profile Ports 1 Profile management: unassigned Template: unassigned Pppoe sessions unlimited: false LTP-8X(config)(if-ont-0/0)# do show interface ont 0/0 configuration

  
  

• Step 16. Configure VLAN 200, 201, 9 and 98 in the switch view (see VLAN configuration).
  

  LTP-8X# switch LTP-8X(switch)# configure terminal LTP-8X(switch)(config)# vlan 200,201,98,9 LTP-8X(switch)(config-vlan-range)# tagged front-port 0 LTP-8X(switch)(config-vlan-range)# tagged pon-port 0 – 7 LTP-8X(switch)(config-vlan-range)# exit LTP-8X(switch)(config)# commit LTP-8X(switch)(config)# exit

  
  

• Step 17. Configure IGMP Proxy in the switch view for VLAN 98, enable the IGMP Snooping and IGMP Proxy mode globally, and set the range of allowed IGMP groups.
  

  LTP-8X# switch LTP-8X(switch)# configure terminal LTP-8X(switch)(config)# ip igmp proxy report enable LTP-8X(switch)(config)# ip igmp proxy report range 232.1.0.1 232.1.0.100 from all to 98 LTP-8X(switch)(config)# ip igmp snooping LTP-8X(switch)(config)# commit LTP-8X(switch)(config)# exit

  

Bridged mode

Configure the Internet (PPPoE), IPTV unicast, and management services via the TR-069 protocol. Set the VLAN ID to 200 for Internet, to 201 for UC_IPTV. Set U-VLAN to 200 for Internet. Multicast traffic will be transmitted to VLAN 98, management will be performed via VLAN 9.

Figure 39 — Bridged service abstract representation for Model 3

• Step 1. Create an Internet cross-connect profile to configure PPPoE in the bridge. Configure the bridged service specifying the bridge group the ONT port will be connected to (in this case, it is equal to 10 for the first service).

  LTP-8X(config)# profile cross-connect Internet LTP-8X(config-cross-connect)("Internet")# bridge LTP-8X(config-cross-connect)("Internet")# bridge group 10

  
  

• Step 2. To assign an S-VLAN, use the outer vid 200 command: The LAN port of the ONT will send tagged traffic. To enable this, set U-VLAN equal to S-VLAN.

  LTP-8X(config-cross-connect)("Internet")# outer vid 200 LTP-8X(config-cross-connect)("Internet")# user vid 200

  
  

• Step 3. Check the changes made.

  LTP-8X(config-cross-connect)("Internet")# do show profile cross-connect Internet Name: 'Internet' Description: 'ONT Profile Cross Connect 1' Model: ont Bridge group: 10 Tag mode: single-tagged Outer vid: 200 Outer cos: unused

  
  

  Inner vid: - U vid: 200 U cos: unused Mac table entry limit: unlimited Type: general IP host index: 0 Priority queue: 0

  
  

• Step 4. By analogy with the described above, create another cross-connect profile (UC_IPTV) for the second service and configure it with bridge group 11 and S-VLAN 201. 
  

  LTP-8X(config)# profile cross-connect UC_IPTV LTP-8X(config-cross-connect)("UC_IPTV")# bridge LTP-8X(config-cross-connect)("UC_IPTV")# bridge group 11 LTP-8X(config-cross-connect)("UC_IPTV")# outer vid 201

  
  

• Step 5. Set U-VID to untagged to have untagged traffic outgoing from the ONT port. 
  

  LTP-8X(config-cross-connect)("UC_IPTV")# user vid untagged

  
  

• Step 6. Check the changes made. 
  

  LTP-8X(config-cross-connect)("UC_IPTV")# do show profile cross-connect UC_IPTV Name: 'UC_IPTV' Description: 'ONT Profile Cross Connect 2' Model: ont Bridge group: 10 Tag mode: single-tagged Outer vid: 201 Outer cos: unused Inner vid: - U vid: untagged U cos: unused Mac table entry limit: unlimited Type: general IP host index: 0 Priority queue: 0

  
  

• Step 7. Specify DBA parameters. To do this, create a dba profile and adjust the corresponding settings. We set a value of a guaranteed bandwidth in this example.
  

  LTP-8X(config)# profile dba AllServices LTP-8X(config-dba)("AllServices")# bandwidth guaranteed 500

  

• Step 8. Check the changes made.
  

  LTP-8X(config-dba)("AllServices")# do show profile dba AllServices Name: 'AllServices' Description: 'ONT Profile DBA 1' Dba: Sla data:

  
  

  Service class: type5 Status reporting: nsr Alloc size: 0 Alloc period: 0 Fixed bandwidth: 0 Guaranteed bandwidth: 500 Besteffort bandwidth: 1244000 T-CONT allocation scheme: share T-CONT with same profile

  
  

• Step 9. Associate the bridge group with an ONT port. To do this, create a ports profile and set the bridge group parameter to 10 for the eth0 port and to 11 for the eth1 port. Set the rules of multicast traffic processing for port 1.
  

  LTP-8X(config)# profile ports Ports1 LTP-8X(config-ports)("Ports1")# port 0 bridge group 10 LTP-8X(config-ports)("Ports1")# port 1 bridge group 11 LTP-8X(config-ports)("Ports1")# igmp multicast dynamic-entry 0 vid 98 LTP-8X(config-ports)("Ports1")# igmp multicast dynamic-entry 0 group 224.0.0.1 239.255.255.255 LTP-8X(config-ports)("Ports1")# port 1 multicast LTP-8X(config-ports)("Ports1")# port 1 igmp downstream vid 98 LTP-8X(config-ports)("Ports1")# port 1 igmp downstream tag-control remove-tag

  

• Step 10. Check the changes made.
  

  LTP-8X(config-ports)("Ports1")# do show profile ports Ports1 ... Igmp settings: ... Multicast dynamic entry [0]: Vlan id: 98 First group ip: 224.0.0.1 Last group ip: 239.255.255.255 ... Port [0]: Speed: auto Duplex: auto Bridge group: 10 Spanning tree for bridge group: false Multicast enable: true Multicast port settings: Upstream igmp vid: 1 Upstream igmp prio: 0 Upstream igmp tag control: pass Downstream multicast vid: 1 Downstream multicast prio: 0 Downstream multicast tag control: pass Max groups: 0 Max multicast bandwidth: 0 Shaper downstream: Enable: false Commited rate: 1000000 Shaper upstream: Enable: false Commited rate: 1000000

  
  

  Port [1]: Speed: auto Duplex: auto Bridge group: 11 Spanning tree for bridge group: false Multicast enable: false Multicast port settings: Upstream igmp vid: 1 Upstream igmp prio: 0 Upstream igmp tag control: pass Downstream multicast vid: 98 Downstream multicast prio: 0 Downstream multicast tag control: remove-tag Max groups: 0 Max multicast bandwidth: 0 Shaper downstream: Enable: false Commited rate: 1000000 Shaper upstream: Enable: false Commited rate: 1000000 ...

  

• Step 11. Configure a management profile. To do this, create a cross-connect profile and assign it with the management type and the bridge model.
  

  LTP-8X(config)# profile cross-connect management LTP-8X(config-cross-connect)("management")# bridge LTP-8X(config-cross-connect)("management")# outer vid 9 LTP-8X(config-cross-connect)("management")# type management

  
  

• Step 12. Check the changes made.
  

  LTP-8X(config-cross-connect)("management")# do show profile cross-connect management Name: 'management' Description: 'ONT Profile Cross Connect 3' Model: ont Bridge group: 255 Tag mode: single-tagged Outer vid: 9 Outer cos: unused Inner vid: - U vid: untagged U cos: unused Mac table entry limit: unlimited Type: management IP host index: 0 Priority queue: 0

  

• Step 13. Assign the created profiles in the ONT.

  LTP-8X(config)# interface ont 0/0 LTP-8X(config)(if-ont-0/0)# service 0 profile dba AllServices LTP-8X(config)(if-ont-0/0)# service 0 profile cross-connect Internet LTP-8X(config)(if-ont-0/0)# service 1 profile dba AllServices LTP-8X(config)(if-ont-0/0)# service 1 profile cross-connect UC_IPTV LTP-8X(config)(if-ont-0/0)# service 2 profile dba AllServices LTP-8X(config)(if-ont-0/0)# service 2 profile cross-connect management LTP-8X(config)(if-ont-0/0)# profile ports Ports1 LTP-8X(config)(if-ont-0/0)# do show interface ont 0/0 configuration ----------------------------------- [ONT0/0] configuration ----------------------------------- Description: '' Enabled: true Serial: ELTX5C00008C Password: '0000000000' Fec up: false Easy mode: false Downstream broadcast: true Downstream broadcast filter: true Ber interval: none Ber update period: 60 Rf port state: disabled Omci error tolerant: false Service [0]: Profile cross connect: Internet ONT Profile Cross Connect 1 Profile dba: AllServices ONT Profile DBA 1 Custom cross connect: disabled Service [1]: Profile cross connect: UC_IPTV ONT Profile Cross Connect 2 Profile dba: AllServices ONT Profile DBA 1 Custom cross connect: disabled Service [2]: Profile cross connect: management ONT Profile Cross Connect 3 Profile dba: AllServices ONT Profile DBA 1 Custom cross connect: disabled Profile shaping: shaping-00 ONT Profile Shaping 0 Profile ports: Ports1 ONT Profile Ports 1 Profile management: unassigned Template: unassigned Pppoe sessions unlimited: false

  
  

• Step 14. Apply the changes by using the commit command.
  

  LTP-8X(config)(if-ont-0/1)# do commit

  

• Step 15. Configure VLAN 200, 201, 9 and 98 in the switch view (see VLAN configuration).

  LTP-8X# switch LTP-8X(switch)# configure terminal LTP-8X(switch)(config)# vlan 200,201,98,9 LTP-8X(switch)(config-vlan-range)# tagged front-port 0 LTP-8X(switch)(config-vlan-range)# tagged pon-port 0 – 7 LTP-8X(switch)(config-vlan-range)# exit LTP-8X(switch)(config)# commit LTP-8X(switch)(config)# exit

  
  

• Step 16. Configure IGMP Proxy in the switch view for VLAN 98, enable the IGMP Snooping and IGMP Proxy mode globally, and set the range of allowed IGMP groups. 
  

  LTP-8X# switch LTP-8X(switch)# configure terminal LTP-8X(switch)(config)# ip igmp proxy report enable LTP-8X(switch)(config)# ip igmp proxy report range 232.1.0.1 232.1.0.100 from all to 98 LTP-8X(switch)(config)# ip igmp snooping LTP-8X(switch)(config)# commit LTP-8X(switch)(config)# exit

  

Tunnelling configuration

Usual profiles in the tag-mode, single-tag or double-tag modes are aimed at mapping the traffic, which is transmitted to the gem port and tagged as user vid or untagged, into the traffic tagged outer vid or outer:inner vid respectively.

Models 2 and 3 allow traffic tunnelling configuration, which extends the range of possible GPON applications in operator's network.

Using the profiles tagged as selective-tunnel allows a tag to be added to incoming packets with a certain set of user vid tags. The profiles tagged as tunnel allow a tag to be added to incoming packets with any user-vid tags.

Consider the following diagram and its configuration as an example. 

Figure 40 — Communication diagram

VLAN 300 (multicast) and Q-in-Q VLAN 1100 and 1200 (Internet) come to the uplink OLT. It is necessary to let them pass to the switch integrated in the OLT via SFP-ONU. In addition, a corporate client is connected to the splitter via SFP-ONU that sends a random set of VLANs to be passed to remote devices after removing tags of these VLANs at the ONT LAN port. To organise a tunnel for this client, VLAN 500 is selected in the operator's network.

Consider the procedure of OLT configuration for the above diagram.

• Step 1. Configure the switch.

  interface pon-port 0 bridging to pon-port 1 exit interface pon-port 1 bridging to pon-port 0 exit vlan 300 name VLAN0300 tagged pon-port 0 , front-port 0 exit vlan 500 name VLAN0500 tagged pon-port 0 , pon-port 1 , front-port 0 exit vlan 1100 name VLAN1100 tagged pon-port 0 , front-port 0 exit

  
  

  vlan 1200 name VLAN1200 tagged pon-port 0 , front-port 0 exit

  
  

• Step 2. Configure cross-connect profiles.

  profile cross-connect "cc-tunnel" bridge bridge group "10" tag-mode tunnel exit profile cross-connect "cc-selecttunnel" bridge bridge group "10" tag-mode selective-tunnel exit profile cross-connect "cc-single" bridge bridge group "10" user vid "300" exit profile cross-connect "cc-double" bridge bridge group "10" tag-mode double-tagged exit

  

• Step 3. Configure ports profiles.

  profile ports "bridge-10" port 0 bridge group "10" exit

  
  

• Step 4. Configure the address-table profile by specifying the VLANs used for tunnels and assign the profile to GPON ports. 
  

  profile address-table "at-tunnel" s-vlan 1100 use c-vlan s-vlan 1200 use c-vlan s-vlan 500 use c-vlan exit interface gpon-port 0 profile address-table "at-tunnel" exit interface gpon-port 1 profile address-table "at-tunnel" exit

  
  

• Step 5. Configure the SFP-ONU to be used for switch connection. 
  

  interface ont 0/0 serial "454C545300000001" password "default" service 0 profile cross-connect "cc-tunnel" service 0 profile dba "dba-00"

  
  

  service 1 profile cross-connect "cc-selecttunnel" service 1 profile dba "dba-00" service 2 profile cross-connect "cc-single" service 2 profile dba "dba-00" profile ports "bridge-10" service 0 custom svid "1100" service 1 custom svid "1200" service 1 selective-tunnel uvid 201-203 service 2 custom svid "300"

  
  

• Step 6. Configure the SFP-ONU to be used for connection of the corporate client. 
  

  interface ont 0/1 serial "454C545300000002" service 0 profile cross-connect "cc-tunnel" service 0 profile dba "dba-00" profile ports "bridge-10" service 0 custom svid "500"

  

• Step 7. Configure the ONTs to be used for connection of remote offices.
  

  interface ont 1/0 serial "454C545800000002" service 0 profile cross-connect "cc-double" service 0 profile dba "dba-00" profile ports "bridge-10" service 0 custom cvid "10" service 0 custom svid "500" exit interface ont 1/1 serial "454C545800000003" service 0 profile cross-connect "cc-double" service 0 profile dba "dba-00" profile ports "bridge-10" service 0 custom cvid "20" service 0 custom svid "500"

  
  

DBA configuration

This chapter considers DBA configuration for ONT.

GPON technology implies that all ONTs of one GPON channel use common communication medium (fibre). It is necessary to provide a mechanism that will ensure data transfer from all ONTs without collisions. The mechanism is called dynamic bandwidth allocation (DBA) and ensures allocation of time intervals in OLT for data transfer to ONTs.

A logical unit of the DBA algorithm is Alloc-ID (allocation) with a corresponding T-CONT (traffic counter) on the ONT side. Data transfer parameters (frequency, transmission window) are separately configured for every Alloc-ID (T-CONT) and are referred to as service level agreement (SLA).

G.984.3 provides several SLA combinations called T-CONT type. There are the following T-CONT types:

• T-CONT type 1 with a fixed bandwidth only. It is suitable for traffic, which is transferred at a constant speed (or with very low variations) and is sensitive to delays and jitter.
• T-CONT type 2 with a guaranteed bandwidth only. This type is suitable for bursty traffic with a well defined upper bound, without strict delay and jitter restrictions.
• T-CONT type 3 is a counter with a guaranteed bandwidth and a possibility to allocate a best-effort bandwidth. This type is suitable for bursty traffic with peak values that requires a certain throughput to be guaranteed.
• T-CONT type 4 allows allocation of a best-effort bandwidth without fixed or guaranteed bandwidths. This type is suitable for bursty traffic with peak values that does not require any guaranteed throughput.
• T-CONT type 5 is a counter with fixed and guaranteed bandwidths and a possibility to allocate a best-effort bandwidth. This type summarises all other types and is suitable for most types of traffic.

The terminal allows configuration of up to 256 default allocations per channel. When one ONT is connected, at least one default allocation will be provided. Thus, when 128 subscribers are connected to a channel, 128 service allocations will be provided. The remaining 128 allocations will be enough to process data, but not enough to process more than one service in its own allocation. You need to follow the rule: Amax = 256/N – 1, where Amax — the maximum quantity of allocations for user data of an ONT, N — the quantity of ONTs on a channel. If the calculated amount of services exceeds ONT Amax, configure a combination of multiple services into a single allocation. For more detailed information, see Services in one T-CONT.

DBA parameters are configured in the dba profile. These parameters allow specification of any T-CONT type described in G.984.3. First of all, choose service-class to define the basic DBA algorithm. After that, configure status-reporting to define the type of ONT queues status report. The fixed-bandwidth, guaranteed-bandwidth, and besteffort-bandwidth parameters define the fixed, guaranteed, and best-effort bandwidth correspondingly. Table 28 shows the correspondence between the dba profile settings and T-CONT types.

Table 28 — DBA profile configuration and T-CONT types

The following rules apply to dba profile assignment:

• when an ONT service is assigned a dba profile, an Alloc-ID is created for the ONT on the OLT side, and a corresponding T-CONT is configured on the ONT side.
• if different ONTs are assigned the same profile, they will each have a separate Alloc-ID created with the same allocation parameters.
• if the same dba profiles are assigned to different services of the same ONT with allocation-scheme share-t-cont, these services will work in the same allocation and have the same allocation parameters.
• if the same dba profiles are assigned to different services of the same ONT with allocation-new-t-cont, these services will work in different allocations, and the number of Alloc-IDs created for the ONT equals the number of assigned dba profiles.

DBA global settings

Latency reduction mode

Enabling DBA latency reduction mode corrects the procedure of polling active allocations and activates redistribution of the fixed bandwidth between connected ONTs. The function is available for use on trees with any number of ONTs. 

There are two modes of DBA operation: Most demanding — the mode of the most demanding ONTs and Fair allocations — the mode of fair distribution. Most demanding mode splits the bandwidth in such a way that the ONT sending the most traffic to the upstream is a priority for DBA algorithms. In the case of Fair allocations, the bandwidth tends to be evenly distributed among all ONTs on the channel.

To enable this mode, use the following command.

LTP-8X# configure terminal
LTP-8X(config)# gpon olt dba-reduced-latency allocation-mode (most-demanding/fair-allocations)
LTP-8X(config)# do commit
LTP-8X(config)# do save

After applying the configuration, the OLT will be automatically reconfigured.

To disable latency reduction mode use the no command.

LTP-8X# configure terminal
LTP-8X(config)# no gpon olt dba-reduced-latency 
LTP-8X(config)# do commit
LTP-8X(config)# do save

DBA short cycle mode

Enabling this mode reduces DBA cycle for the indicated interfaces, which allows to optimize bandwidth allocation for trees with a small number of connected ONTs.

Below is a command for enabling DBA short cycle on 0,1 GPON ports. The mode is available on GPON ports pairs: 0–1, 2–3, 4–5, 6–7. For maximum effect, it is recommended to assign DBA profiles with the status-reporting type 0 parameter set to ONTs connected to gpon-ports with the dba-short-cycle function enabled. For more details on DBA profiles forming procedure, see DBA parameters configuration.

LTP-8X# configure terminal
LTP-8X(config)# gpon olt dba-short-cycle gpon-port 0-1
LTP-8X(config)# do commit
LTP-8X(config)# do save

After applying the configuration, the OLT will be automatically reconfigured.

To disable DBA short cycle mode use the no command.

LTP-8X# configure terminal
LTP-8X(config)# no gpon olt dba-short-cycle gpon-port 0-1
LTP-8X(config)# do commit
LTP-8X(config)# do save

DBA profiles assignment

Services in different T-CONTs

Two Alloc-IDs will be allocated for ONTs in the OLT. Each service will operate in its allocation. There will be two T-CONTs on the ONT side corresponding to the allocations.

• Step 1. Each ONT should have two services in different T-CONTs. To do this, assign two dba profiles by using the profile dba command.

  LTP-8X(config)# profile dba ServiceInternet LTP-8X(config-dba)("ServiceInternet")# exit LTP-8X(config)# profile dba ServiceVoIP LTP-8X(config-dba)("ServiceVoIP")# exit

  
  

• Step 2. Specify an individual allocations distribution scheme by using the allocation-scheme command.

  LTP-8X(config)# profile dba ServiceInternet LTP-8X(config-dba)("ServiceInternet")#allocation-scheme allocate-new-t-cont LTP-8X(config-dba)("ServiceInternet")# exit LTP-8X(config)# profile dba ServiceVoIP LTP-8X(config-dba)("ServiceVoIP")# allocation-scheme allocate-new-t-cont LTP-8X(config-dba)("ServiceVoIP")# exit

  
  

• Step 3. Assign the profiles to services by using the service <id> profile dba command.

  LTP-8X(config)(if-ont-0/0)# service 0 profile dba ServiceInternet LTP-8X(config)(if-ont-0/0)# service 1 profile dba ServiceVoIP

  The configuration will be as follows:

  LTP-8X(config)(if-ont-0/0)# do show interface ont 0/0 configuration ... Service [0]: Profile cross connect: ServiceInternet ONT Profile Cross Connect 0 Profile dba: AllServices ONT Profile DBA 3 Custom cross connect: disabled Service [1]: Profile cross connect: ServiceVoIP ONT Profile Cross Connect 1 Profile dba: AllServices ONT Profile DBA 3 Custom cross connect: disabled ...

  
  

• Step 4. Apply the changes by using the commit command.

  LTP-8X(config)(if-ont-0/0)# do commit

  

Services in one T-CONT

One Alloc-ID will be allocated for ONTs in the OLT. Each ONT will have one T-CONT configured. The T-CONT will be used to transfer traffic from multiple services. Traffic priority will be based on the value of the priority queue field of the corresponding cross-connect profiles.

• Step 1. Each ONT should have three services in one T-CONT. To do this, assign a dba profile by using the profile dba command.

  LTP-8X(config)# profile dba AllServices

  
  

• Step 2. Each ONT should have all services in one T-CONT. To do this, specify an allocation scheme by using the allocation-scheme command.

  LTP-8X(config-dba)("AllServices")# allocation-scheme share-t-cont

  
  

• Step 3. Assign the profile to three services by using the service <id> profile dba command.

  LTP-8X(config)(if-ont-0/1)# service 0 profile dba AllServices LTP-8X(config)(if-ont-0/1)# service 1 profile dba AllServices LTP-8X(config)(if-ont-0/1)# service 2 profile dba AllServices

  The configuration will be as follows:

  LTP-8X(config)(if-ont-0/1)# do show interface ont 0/1 configuration ... Service [0]: Profile cross connect: ServiceInternet ONT Profile Cross Connect 0

  
  

  Profile dba: AllServices ONT Profile DBA 3 Custom cross connect: disabled Service [1]: Profile cross connect: ServiceVoIP ONT Profile Cross Connect 1 Profile dba: AllServices ONT Profile DBA 3 Custom cross connect: disabled Service [2]: Profile cross connect: ServiceIPTV ONT Profile Cross Connect 2 Profile dba: AllServices ONT Profile DBA 3 Custom cross connect: disabled ...

  
  

• Step 4. Apply the changes by using the commit command.

  LTP-8X(config)(if-ont-0/1)# do commit