From: Eric Poulin (epoulins@yahoo.com)
Date: Wed Jun 18 2008 - 17:27:13 ART
Hello GS,
This is a basic eBGP config between two routers. As you can see from the outputs below, routes are being re-advertised to the same neighbor it was learned from. Is this normal behavior of BGP?
Thanks,
Eric
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R1#sh run | beg router bgp
router bgp 65001
no synchronization
bgp log-neighbor-changes
network 12.0.0.0 mask 255.255.255.0
network 13.0.0.0 mask 255.255.255.0
neighbor 10.0.0.2 remote-as 65002
neighbor 10.0.0.2 weight 300
no auto-summary
R1#sh ip bgp summ
Neighbor V AS MsgRcvd MsgSent TblVer InQ OutQ Up/Down
10.0.0.2 4 65002 81712 81028 7747 0 0 1w4d
R1#sh ip bgp
Network Next Hop Metric LocPrf Weight Path
*> 0.0.0.0 10.0.0.2 300 65002 i
*> 11.1.1.0/24 10.0.0.2 300 65002 i
*> 11.1.1.81/32 10.0.0.2 300 65002 i
*> 12.0.0.0/24 0.0.0.0 0 32768 i
*> 13.0.0.0/24 0.0.0.0 0 32768
R1#sh ip bgp neighbors 10.0.0.2 advertised-routes
Network Next Hop Metric LocPrf Weight Path
*> 0.0.0.0 10.0.0.2 300 65002 i
*> 11.1.1.0/24 10.0.0.2 300 65002 i
*> 11.1.1.81/32 10.0.0.2 300 65002 i
*> 12.0.0.0/24 0.0.0.0 0 32768 i
*> 13.0.0.0/24 0.0.0.0 0 32768
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