[c-nsp] BGP with yourself...

[Tom Storey]

On 24/04/2008, at 8:17 PM, Peter Rathlev wrote:

> I experienced a funny thing, trying to setup some templates for PE
> routers. I'd like to do as much as possible in the template, and then
> just the unit specifics afterwards. What I did was basically this:
>
> ! ;; Template
> interface Loopback0
> ! ip address lies in specific configuration
> no ip unreachables
> no shutdown
> exit
> !
> router bgp 65432
> neighbor iBGP peer-group
> neighbor iBGP remote-as 65432
> neighbor iBGP update-source Loopback0
> ! All peers specified, including ourselves
> neighbor 10.0.0.1 peer-group iBGP
> neighbor 10.0.0.2 peer-group iBGP
> neighbor 10.0.0.3 peer-group iBGP
> ! ... and so on
> exit
> !
>
> ! ;; Specifics
> interface Loopback0
> ip address 10.0.0.1 255.255.255.255
> exit
> !
>
> Now it trying to have an iBGP-session with itself, a thing I normally
> can't configure. :-)
>
> lab-core-1#sh ip bgp sum
> BGP router identifier 10.0.0.1, local AS number 65432
> BGP table version is 1, main routing table version 1
>
> Neighbor   V   AS MsgRcvd MsgSent TblVer InQ OutQ Up/Down State/PfxRcd
> 10.0.0.1   4  123       0       3      0   0    0 never   OpenSent
> lab-core-1#
>
> It never gets any where from there, it's just stuck at "OpenSent".
>
> And yes, I know this is just a novelty, I'm not complaining, just
> thought it was a little funny...
>
> Regards,
> Peter

Any ACLs on the interfaces between the two peers?