From: supernet (supernet@comcast.net)
Date: Fri Dec 30 2005 - 16:29:52 GMT-3
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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