From: Chris (chris_atkins@Blueyonder.co.uk)
Date: Fri Dec 30 2005 - 16:35:29 GMT-3
Does Router 2 know about the point to point link between?
ISP1 router-------MyRouter1-------
Chris
----- Original Message -----
From: "supernet" <supernet@comcast.net>
To: <ccielab@groupstudy.com>; <cisco@groupstudy.com>
Sent: Friday, December 30, 2005 7:29 PM
Subject: BGP question again
> Dear Friends,
>
>
>
> Thanks for helping me on the BGP question. I screwed up with my previous
> message. Here is the accurate configuration.
>
> ISP1 router-------MyRouter1-------MyRouter2-------ISP2 router
>
> MyRouter1 and MyRouter2 are directly connected and I plan to run IBGP on
> them. The problem is some routes come and goes and causes connectivity
> issues. For example, on MyRouter2, 203.34.233.0/24 is not stable.
Sometimes,
> show ip bgp 230.34.233.0 says 169.232.143.153 (inaccessible). What does it
> mean?? Thank you guys!! Yoshi
>
>
>
> My router1:
>
> router bgp 11111
>
> no synchronization
>
> no bgp log-neighbor-changes
>
> bgp dampening route-map Dampening
>
> network 187.91.0.0
>
> neighbor 169.232.143.153 remote-as 7132
>
> neighbor 187.19.250.133 remote-as 11111
>
> no auto-summary
>
>
>
>
>
> My router2:
>
> router bgp 11111
>
> no synchronization
>
> no bgp log-neighbor-changes
>
> bgp dampening route-map Dampening
>
> network 187.91.0.0
>
> neighbor 157.30.192.145 remote-as 701
>
> neighbor 187.19.250.134 remote-as 11111
>
> no auto-summary
>
> !
>
>
>
>
>
> Gateway of last resort is 157.30.192.145 to network 0.0.0.0
>
>
>
> B 217.170.115.0/24 [20/0] via 157.30.192.145, 2w1d
>
> B 216.221.5.0/24 [20/0] via 157.30.192.145, 1w2d
>
> B 210.51.225.0/24 [20/0] via 157.30.192.145, 2w1d
>
> B 209.136.89.0/24 [20/0] via 157.30.192.145, 2w1d
>
> B 209.34.243.0/24 [20/0] via 157.30.192.145, 2w1d
>
> B 205.204.1.0/24 [20/0] via 157.30.192.145, 1w0d
>
> B 204.255.51.0/24 [20/0] via 157.30.192.145, 2w1d
>
> B 204.238.34.0/24 [20/0] via 157.30.192.145, 3d05h
>
> B 204.221.17.0/24 [20/0] via 157.30.192.145, 2w1d
>
> B 204.17.221.0/24 [20/0] via 157.30.192.145, 2w1d
>
> B 203.238.37.0/24 [20/0] via 157.30.192.145, 2w1d
>
> B 203.34.233.0/24 [200/0] via 169.232.143.153, 00:00:26 (Why???)
>
> B 202.68.142.0/24 [20/0] via 157.30.192.145, 2w1d
>
>
>
>
>
> MyRouter2#sh ip bgp 203.34.233.0
>
> BGP routing table entry for 203.34.233.0/24, version 187766177
>
> Paths: (2 available, best #1, table Default-IP-Routing-Table)
>
> Flag: 0x820
>
> Not advertised to any peer
>
> 7132 4637 1221
>
> 169.232.143.153 from 187.91.250.134 (187.91.250.134)
>
> Origin incomplete, metric 0, localpref 100, valid, internal, best
>
> 701 4637 4637 4637 4637 1221
>
> 157.30.192.145 from 157.30.192.145 (137.39.2.155)
>
> Origin incomplete, localpref 100, valid, external
>
>
>
> MyRouter2#sh ip bgp 203.34.233.0
>
> BGP routing table entry for 203.34.233.0/24, version 187810912
>
> Paths: (2 available, best #2, table Default-IP-Routing-Table)
>
> Flag: 0x820
>
> Advertised to update-groups:
>
> 1
>
> 7132 4637 1221
>
> 169.232.143.153 (inaccessible) from 187.91.250.134 (187.91.250.134)
>
> Origin incomplete, metric 0, localpref 100, valid, internal
>
> 701 4637 4637 4637 4637 1221
>
> 157.30.192.145 from 157.30.192.145 (137.39.2.155)
>
> Origin incomplete, localpref 100, valid, external, b
>
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