Question:
on the topology,WS-C3560V2-48PS-S I have two router A and B, and I want to put between two BGP routers,
my problem is that routers do not bridge connected physically, but through a port-channel (Vlan 13),
Do you think I can do the routing between the router A and B(even if Port-channel), and ensure the communication between them for have redundancy ?
I do not know how to configure the router iBGP between both router A and router B ?
Config eBGP:
Router A:
routeur bgp 100
neighbor 12.12.12.2 remote-as 2
network 10.10.10.0 mask 255.255.255.0
Router B:
router bgp 100
neighbor 13.13.13.2 remote-as 2
network 11.11.11.0 mask 255.255.255.0
Router ISP:
router bgp 2
neighbor 12.12.12.1 remote-as 100
neighbor 13.13.13.1 remote-as 100
network 10.218.218.0 mask 255.255.255.0
Config iBGP:
Router A:
neighbor ??????? remote-as 2
neighbor ??????? next-hop-self
....
Router B:
neighbor ??????? remote-as 2
neighbor ??????? next-hop-shttp://www.3anetwork.com/cisco-ws-c3560x-48pf-l-price_p60.html
Answer:
The only requirement for iBGP neighborship is reachability. If you can ping Router A from Router B, you should be able to establish an iBGP neighborship so your config should work:
Config iBGP:
Router A:
neighbor 14.14.14.2 remote-as 2
neighbor 14.14.14.2 next-hop-self
....
Router B:
neighbor 14.14.14.1 remote-as 2
neighbor 14.14.14.1 next-hop-self
....
Are you unable to configure the above?
If you want real redudnancy, you should configure the iBGP peering to be between the loopbacks for Router A and Router B. Therefore, if the Port-channel between them goes down, the iBGP session will continue to work ( the IGP reconverges to take the path through Router WS-C3560X-48PF-L Price X and Router Y.