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Table of Contents

Network Requirement

Configure load balancing on Switch A. 

Configure EBGP connections between Switch B and Switch A and between Switch B and Switch D.

Configure EBGP connections between Switch C and Switch A and between Switch C and Switch D.

 Figure 1. BGP configurationBGP Load Balancing

Image Added

Procedure

This section describes the steps of how to configure basic BGP functions on SwitchA, SwitchB, SwitchC and SwitchD.

Switch A

Step1         Configure the VLANs and VLAN interfaces.

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Code Block
admin@SwitchD# commit

Viewing BGP Peer Status on Switch B

Code Block
admin@XorPlus# run show bgp peers detail 
Peer 2: local 192.168.20.2/179 remote 192.168.20.1/39912
Peer ID: 1.1.1.1
Peer State: ESTABLISHED
Admin State: START
Negotiated BGP Version: 4
Peer AS Number: 100
Updates Received: 20, Updates Sent: 2
Messages Received: 634, Messages Sent: 611
Time since last received update: 1685 seconds
Number of transitions to ESTABLISHED: 1
Time since last entering ESTABLISHED state: 15995 seconds
Retry Interval: 120 seconds
Hold Time: 90 seconds, Keep Alive Time: 30 seconds
Configured Hold Time: 90 seconds, Configured Keep Alive Time: 30 seconds
Minimum AS Origination Interval: 0 seconds
Minimum Route Advertisement Interval: 0 seconds
Peer 2: local 192.168.30.2/16808 remote 192.168.30.1/179
Peer ID: 4.4.4.4
Peer State: ESTABLISHED
Admin State: START
Negotiated BGP Version: 4
Peer AS Number: 100
Updates Received: 20, Updates Sent: 2
Messages Received: 634, Messages Sent: 611
Time since last received update: 1685 seconds
Number of transitions to ESTABLISHED: 1
Time since last entering ESTABLISHED state: 15995 seconds
Retry Interval: 120 seconds
Hold Time: 90 seconds, Keep Alive Time: 30 seconds
Configured Hold Time: 90 seconds, Configured Keep Alive Time: 30 seconds
Minimum AS Origination Interval: 0 seconds
Minimum Route Advertisement Interval: 0 seconds

Viewing BGP Peer Status on Switch C

Code Block
admin@XorPlus# run show bgp peers detail 
Peer 2: local 192.168.40.2/179 remote 192.168.40.1/38815
Peer ID: 1.1.1.1
Peer State: ESTABLISHED
Admin State: START
Negotiated BGP Version: 4
Peer AS Number: 100
Updates Received: 20, Updates Sent: 2
Messages Received: 634, Messages Sent: 611
Time since last received update: 1685 seconds
Number of transitions to ESTABLISHED: 1
Time since last entering ESTABLISHED state: 15995 seconds
Retry Interval: 120 seconds
Hold Time: 90 seconds, Keep Alive Time: 30 seconds
Configured Hold Time: 90 seconds, Configured Keep Alive Time: 30 seconds
Minimum AS Origination Interval: 0 seconds
Minimum Route Advertisement Interval: 0 seconds
Peer 2: local 192.168.50.2/49923 remote 192.168.50.1/179
Peer ID: 4.4.4.4
Peer State: ESTABLISHED
Admin State: START
Negotiated BGP Version: 4
Peer AS Number: 100
Updates Received: 20, Updates Sent: 2
Messages Received: 634, Messages Sent: 611
Time since last received update: 1685 seconds
Number of transitions to ESTABLISHED: 1
Time since last entering ESTABLISHED state: 15995 seconds
Retry Interval: 120 seconds
Hold Time: 90 seconds, Keep Alive Time: 30 seconds
Configured Hold Time: 90 seconds, Configured Keep Alive Time: 30 seconds
Minimum AS Origination Interval: 0 seconds
Minimum Route Advertisement Interval: 0 seconds

Configuring Switch D to Advertise Route 192.168.10.0/24

Configure Switch A to enable BGP multipath:

Code Block
admin@XorPlus# set protocols bgp multipath disable false



Configure Switch D to advertise route 192.168.10.0/24:

Code Block
admin@XorPlus# set policy policy-statement direct-to-bgp term t1 from protocol connected
admin@XorPlus# set policy policy-statement direct-to-bgp term t1 from network4 192.168.10.0/24
admin@XorPlus# set policy policy-statement direct-to-bgp term t1 then accept
admin@XorPlus# set protocols bgp export direct-to-bgp

View the BGP routing table of Switch A:

Code Block
admin@XorPlus# run show bgp routes
Status Codes: * valid route, > best route
Origin Codes: i IGP, e EGP, ? incomplete
Prefix Nexthop Peer AS Path
------ ------- ---- -------
*> 192.168.10.0/24 192.168.30.2 2.2.2.2 200 400 ?
192.168.10.0/24 192.168.40.2 3.3.3.3 200 400 ?
admin@XorPlus#

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