From: Ben (ccieben@cox.net)
Date: Mon Feb 19 2007 - 21:43:24 ART
Hi Michael,
Looks like synchronization is turned on for AS300, is that 10.10.10.0/24
net in the IGP of R3?
Can you send the output of: show ip bgp 10.10.10.0
Thanks...
Ben
Michael Zuo wrote:
> Oops, forgot the output:
>
>
>
> R3(config-router)#do sh run | be router bg
>
> router bgp 300
>
> synchronization
>
> bgp log-neighbor-changes
>
> neighbor 172.16.34.4 remote-as 300
>
> neighbor 172.16.34.4 next-hop-self
>
> neighbor 172.16.34.4 route-map PREFER in
>
> neighbor 172.16.34.10 remote-as 1000
>
> neighbor 172.16.36.6 remote-as 100
>
> distance bgp 20 20 20
>
> no auto-summary
>
> !
>
> no ip http server
>
> no ip http secure-server
>
> !
>
> !
>
> !
>
> !
>
> ip prefix-list FROMR4 seq 5 permit 10.0.0.0/8 le 32
>
> !
>
> ip access-list standard FROMCAT2
>
> permit 10.0.0.0 0.255.255.255
>
> ip access-list standard LOOP
>
> permit 172.16.104.0 0.0.0.255
>
>
>
> R3(config-router)#do sh ip b
>
> BGP table version is 13, local router ID is 172.16.103.1
>
> Status codes: s suppressed, d damped, h history, * valid, > best, i -
> internal,
>
> r RIB-failure, S Stale
>
> Origin codes: i - IGP, e - EGP, ? - incomplete
>
>
>
> Network Next Hop Metric LocPrf Weight Path
>
> * i10.10.10.0/24 172.16.34.4 0 200 0 1000 i
>
> *> 172.16.34.10 0 0 1000 i
>
> *> 70.0.0.0 172.16.36.6 0 100 700 ?
>
> R3(config-router)#
>
>
>
> ________________________________
>
> From: Michael Zuo
> Sent: Monday, February 19, 2007 1:28 PM
> To: ccielab@groupstudy.com
> Subject: BGP prefers route with less local preference??
>
>
>
> Hi Group,
>
>
>
> I ran into a strange problem, below output shows that BGP is picking a
> route with less local preference as "Best"?? this starts happening when
> I put in "distance bgp 20 20 20". Does anyone know why this is
> happening?
>
>
>
> thanks
>
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