[c-nsp] RE: Interesting iBGP problem

[Danny McPherson]

Kevin,
"no synchronization" needs to be configured in order to
remove BGP's IGP route existence dependency, you have
it configured on your other routers.  You probably also
want "no auto-summary" (and a few other things, but..).

As for the other issue, it indeed appears to be an
issue with the one minute BGP Scanner process finding
that the BGP NEXT_HOP for the concerned prefixes is not
being reachable.  I'd definitely advise against redistributing
external prefixes into your IGP.  Setting "next-hop-self"
on the iBGP sessions between Border1 and Border2 is the
easy fix, though there are other reasons why you may
want the next hops reachable anyways (perhaps via BGP
injection or the like).

-danny

On Sep 14, 2004, at 8:59 AM, Kevin wrote:

> I'll reply to myself on this one,
> I've added a c5500-RSM to the ibgp mix with the config below, it's
> running 12.1(20) For some reason it's not adding routes to the bgp 
> table
> at all, Is their something that I have todo specificly add bgp routes 
> to
> the routing table, with this older IOS? I did do next-hop-self on the
> other two routers.
>
> Kevin,
>
> router bgp 25720
>  bgp log-neighbor-changes
>  neighbor 192.168.1.1 remote-as 25720
>  neighbor 192.168.1.1 update-source Loopback0
>  neighbor 192.168.1.2 remote-as 25720
>  neighbor 192.168.1.2 update-source Loopback0