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  1. R1 configuration
    Enable LLDP globally on the router:

    Блок кода
    esr(config)# lldp enable

    Enable the receiving and transmission of LLDPDU on the gi 1/0/1 interface.

    Блок кода
    esr(config)# interface gigabitethernet 1/0/1
    esr(config-if-gi)# lldp receive
    esr(config-if-gi)# lldp transmit


  2. R2 configuration

    Enable LLDP globally on the router/controller:

    Блок кода
    esr(config)# lldp enable

    Enable the receiving and transmission of LLDPDU on the gi 1/0/1 interface.

    Блок кода
    esr(config)# interface gigabitethernet 1/0/1
    esr(config-if-gi)# lldp receive
    esr(config-if-gi)# lldp transmit

    To view LLDP neighbors information, use the following command:

    Блок кода
    esr# show lldp neighbors

    To view more detailed information on the certain interface neighbor, use the following command:

    Блок кода
    esr# show lldp neighbors gigabitethernet 1/0/1

    To view LLDP statistics, use the following command:

    Блок кода
    esr# show lldp statistics

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LLDP MED configuration

LLDP MED — LLDP standard enhancement which allows to transmit network policies: VLAN ID, DSCP, priority.

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Configure STP on the router to prevent a loop with a 10 second listen and learn interval and a spanning tree lifetime of 15 seconds.

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Solution:

Example of a diagram with a router and a switch connected by two links is given below.

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Configure PPP connection to the opposite side with IP address 192address 192.0.2.2/24 via TOPGATE-WAN-E1 using 1-8 channel slots for data transmission; the clock source is the opposite side.

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Solution:

First, configure system jumbo-frames, save changes to the configuration and reboot the router:

Блок кода
esr(config)# system jumbo-frames 
esr(config)# exit 
esr# commit 
esr# confirm
esr# reload system 
Do you really want to reload system ? (y/N): y

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Configure the physical interface gigabitethernet 1/0/3, in which TOPGATE-WAN-E1 is installed:

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Примечание
titleModem compatibility verified

Modem Zyxel U-336E Plus.

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Solution:

Configure the first ESR-21 

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Блок кода
esr-21-1(config)# line aux 2 
esr-21-1(config-line-aux)# flowcontrol hardware
esr-21-1(config-line-aux)# exit
esr-21-1(config)# 

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Configure the required RS-232 interfaces:

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