ESR series service routers.ESR-Series. User manual
ESR3(config)# router bgp log-neighbor-changes
ESR3(config)# router bgp 65500
ESR3(config-bgp)# router-id 3.3.3.3
ESR3(config-bgp)# enable
ESR3(config-bgp)# neighbor 1.1.1.1
ESR3(config-bgp-neighbor)# remote-as 65500
ESR3(config-bgp-neighbor)# update-source 3.3.3.3
ESR3(config-bgp-neighbor)# enable
ESR3(config-bgp-neighbor)# address-family vpnv4 unicast
ESR3(config-bgp-neighbor-af)# send-community extended
ESR3(config-bgp-neighbor-af)# enable
ESR3(config-bgp-neighbor-af)# exit
ESR3(config-bgp-neighbor)# exit
ESR3(config-bgp)# exit
ESR3(config)# do commit
ESR3(config)# do confirm
It is necessary to make sure that BGP session is successfully established.
ESR1# show ip bgp neighbors
BGP neighbor is 3.3.3.3
BGP state: Established
Neighbor address: 3.3.3.3
Neighbor AS: 65500
Neighbor ID: 3.3.3.3
Neighbor caps: refresh enhanced-refresh restart-aware AS4
Session: internal multihop AS4
Source address: 1.1.1.1
Weight: 0
Hold timer: 126/180
Keepalive timer: 40/60
Address family ipv4 unicast:
Default originate: No
Default information originate: No
Uptime: 88495 s
PE-CE routing configuration
According to topology, Customer1 advertises a BGP(AS65505) subnet 10.100.0.0/24. Configure eBGP session
between CE_SiteA and PE. Configure the corresponding interfaces, eBGP between ESR1 and CE_SiteA. It is
also necessary to allow the announcement of routes towards the PE.
By default the route advertising is prohibited for EBGP, an allow rule must be configured. For IBGP
route advertising is allowed.
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