10G-PON is an access technology that uses passive optical network (PON) as the transport between optical network terminal (ONT) and optical line terminal (OLT). Common components of all PON networks are optical wire and passive (non-powered) elements – splitters, adders, etc. Thus, the key advantage of PON networks is that there is no need to use active elements (amplifiers, signal repeaters) requiring additional power supply at the OLT↔ONT site.
10G-PON is a development of GPON technology with faster data transmission. 10G-PON technology has two types:
- XG-PON — asymmetric 10G GPON that transfers data at asymmetric speed: 10G downstream, 2.5G upstream.
- XGS-PON — symmetric 10G GPON that transfers data at symmetric speed: 10G both upstream and downstream.
10G-PON equipment from Eltex is represented by devices operating on XGS-PON technology. This guide describes possible variants of provider's access network section design using Eltex equipment, considers multiple examples of possible diagrams of enabling and providing services, and describes the specifics of configuring each diagram.
Since ONT is a subscriber device in most connection diagrams, most common location of an ONT is on subscriber premises, where a dedicated ONT is allocated to each subscriber. However, the higher speeds of XGS-PON compared to GPON and ONTs with 10-gigabit LAN ports make it possible to use a high-speed connection to one ONT and then to an access switch, to which multiple subscribers are connected. Examples of such diagrams will be given later.
Notes and warnings
Hints contain small explanations to help with learning to use the equipment more quickly, or additional information.
Notes contain important information about setting up the equipment.
Warnings inform the user of situations that may cause harm, incorrect system operation or loss of data.
Glossary
OLT (Optical Line Terminal) — station equipment installed at the provider's communications center. Used in xPON (GPON, XGS-PON) technology as an aggregation node for connecting multiple subscriber terminals operating under this technology.
ONT (Optical Network Terminal) — subscriber equipment installed on subscriber's premises.
Bridge mode — an ONT operation mode in which services are transmitted through an ONT transparently. In this mode, connection to additional equipment (PC or router) after the ONT is required. In this connection diagram, equipment connected to LAN interfaces of an ONT establishes connection directly to the provider's network equipment.
Routed mode — an ONT operation mode, in which ONT acts as a full-fledged home router with the ability to establish PPPoE/IPoE connections directly to ONT.
IGMP (Internet Group Management Protocol) — protocol for managing IPTV multicast streaming in IPv4 networks.
Multicast — a method of sending data from one source device to multiple destination devices simultaneously.
Cross-connect profile — a configuration profile for ONT services, which is responsible for forming a logical data channel between OLT and ONT in a specific VLAN.
Ports profile — a configuration profile for ONT services, which is responsible for configuring internal parameters of the ONT LAN interfaces, forming the rules of traffic passing through an ONT, as well as actions with multicast traffic that passes through an ONT.
GUI EMS — a graphical user interface of Eltex EMS management system.
MS — management system (used in the document in the context of Eltex EMS).