BGP question

From: supernet (supernet@comcast.net)
Date: Fri Dec 30 2005 - 02:04:39 GMT-3


I have 2 routers connect to 2 ISPs:

ISP1 router--------My router1------My router2---------ISP2 router

 

My router1 configuration:

router bgp 11111

 no synchronization

 no bgp log-neighbor-changes

 network 17.11.0.0

 neighbor 69.231.141.153 remote-as 12345

 neighbor 17.11.25.11 remote-as 11111

 no auto-summary

 

My router2 configuration:

router bgp 22222

 no synchronization

 no bgp log-neighbor-changes

 network 17.11.0.0

 neighbor 167.13.192.145 remote-as 54321

 neighbor 17.11.25.12 remote-as 22222

 no auto-summary

 

I noticed my router2 routing table keeps changing and caused connectivity
problems. It sometimes gets routes from ISP1 router. How does it happen? My
router2 does not have direct session with ISP1 router. Anyone can help me?

 

Here is part of the routing table on my router2:

B 217.170.115.0/24 [20/0] via 167.13.192.145, 2w1d

B 216.221.5.0/24 [20/0] via 167.13.192.145, 1w1d

B 210.51.225.0/24 [20/0] via 167.13.192.145, 2w1d

B 209.136.89.0/24 [20/0] via 167.13.192.145, 2w1d

B 209.34.243.0/24 [20/0] via 167.13.192.145, 2w1d

B 205.204.1.0/24 [20/0] via 167.13.192.145, 6d23h

B 204.255.51.0/24 [20/0] via 167.13.192.145, 2w1d

B 204.238.34.0/24 [20/0] via 167.13.192.145, 2d14h

B 204.221.17.0/24 [20/0] via 167.13.192.145, 2w1d

B 204.17.221.0/24 [20/0] via 167.13.192.145, 2w1d

B 203.238.37.0/24 [20/0] via 167.13.192.145, 2w1d

B 203.34.233.0/24 [200/0] via 69.231.141.154, 00:00:43 (why this???)



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