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Network Requirement
As shown in Figure. 1, BGP runs on all the switches.
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Configure an EBGP connection between Switch A and Switch B.
Configure Switch D as the route reflector for Switch B and Switch C as the clients of Switch D to simplify device configuration and management.
You have to finish configurations on Switch D to be a route reflector. No configuration is required on the client.
Figure 1. BGP Route Reflector Configuration
Procedure
This section describes the steps of how to configure basic BGP route reflector functions on SwitchA, SwitchB, SwitchC and SwitchD.
Switch A
Step1 Configure the VLANs and VLAN interfaces.
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admin@SwitchA# set protocols bgp bgprouter-id 1.1.1.1 admin@SwitchA# set protocols bgp local-as 100 admin@SwitchA# set protocols bgp peerneighbor 192.168.20.2 remote-as 200 admin@SwitchA# set protocols bgp peer 192.168.20.2 local-ip 192.168.20.1 admin@SwitchA# set protocols bgp peer 192.168.20.2 next-hop-self true |
Step3 Commit the configurations.
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admin@SwitchB# set protocols bgp bgprouter-id 2.2.2.2 admin@SwitchB# set protocols bgp local-as 200 admin@SwitchB# set protocols bgp peerneighbor 192.168.20.1 remote-as 100 admin@SwitchB# set protocols bgp peerneighbor 192.168.20.1 local-ip 192.168.20.2 admin@SwitchB# set protocols bgp peer 192.168.20.1 next-hop-self true admin@SwitchB# set protocols bgp peer 192.168.40.2 as 200 admin@SwitchB# set protocols bgp peer 192.168.40.2 local-ip 192.168.40.1 admin@SwitchB# set protocols bgp peer 192.168.40.2 next-hop-self true40.2 remote-as 200 |
Step3 Commit the configurations.
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admin@SwitchC# set protocols bgp bgprouter-id 3.3.3.3 admin@SwitchC# set protocols bgp local-as 200 admin@SwitchC# set protocols bgp peerneighbor 192.168.40.1 remote-as 200 admin@SwitchC# set protocols bgp peerneighbor 192.168.4050.1 local-ip 192.168.40.2 admin@SwitchC# set protocols bgp peer 192.168.40.1 next-hop-self true admin@SwitchC# set protocols bgp peer 192.168.50.1 as 200 admin@SwitchC# set protocols bgp peer 192.168.50.1 local-ip 192.168.50.2 admin@SwitchC# set protocols bgp peer 192.168.50.1 next-hop-self true |
Step3 Configure IBGP connections for the route reflector clients.
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admin@SwitchC# set protocols bgp route-reflector cluster-id 3.3.3.3
admin@SwitchC# set protocols bgp route-reflector disable false
admin@SwitchC# set protocols bgp peer 192.168.40.1 client true
admin@SwitchC# set protocols bgp peer 192.168.50.1 client true |
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remote-as 200 |
Step3 Commit the configurations.
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admin@SwitchD# set protocols bgp bgprouter-id 4.4.4.4 admin@SwitchD# set protocols bgp local-as 200 admin@SwitchD# set protocols bgp peerneighbor 192.168.30.1 remote-as 200 admin@SwitchD# set protocols bgp peerneighbor 192.168.3050.12 localremote-ip 192.168.30.2 as 200 |
Step3 Configure Switch D to be a route reflector for Switch B and Switch C.
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admin@SwitchD# set protocols bgp peeripv4 unicast neighbor 192.168.3040.1 nextroute-hopreflector-selfclient true admin@SwitchD# set protocols bgp peer 192.168.50.2 as 200 admin@SwitchD# set protocols bgp peer 192.168.50.2 local-ip ipv4 unicast neighbor 192.168.50.1 admin@SwitchD# set protocols bgp peer 192.168.50.2 next-hop-self true |
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route-reflector-client |
Step4 Commit the configurations.
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Verify the Configurations
- View the BGP routing table of Switch B.
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admin@SwitchB# run show bgp routes Status Codes: * valid route, > best route Origin Codes: i IGP, e EGP, ? incomplete Prefix Nexthop Peer AS Path ------ ------- ---- ------- *> 192.168.10.0/24 192.168.20.11.1.1.1200 ? |
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