Re: Sync. problem in BGP

From: elping (elpingu@xxxxxxxxxx)
Date: Tue Jun 25 2002 - 11:56:04 GMT-3


   
this might seem too simple...but i was doing somthing like that last
night.
i just had to put
no sync

but i see what you are saying....it should show up

Hunt Lee wrote:

> Okay folks, I'm back as I have bummed into another problem last nite
> =)
>
> 150.150.150.0/24---RTA ---RTB ---RTD---RTF
> | |
> RTC RTE
>
> RTA, B, C, D, & E are in a Confederation called AS 1, in which:-
>
> RTA is sub-AS 65530
> RTB & RTC are both in sub-AS 65531
> RTD & RTE are both in sub-AS 65532
>
> RTF is in AS 2
>
> RTB, C, D & E are running OSPF as IGP. And OSPF is being
> redistributed into BGP at RTB.
>
> The network i172.16.0.12/30 is being advertised into BGP by BGP
> "network" command on RTD. i172.16.0.13 & .14 are the interfaces IP
> for RTD & RTE.
>
> Ok, here is the thing. RTC just can't see this link via BGP (it kept
> on saying it's not sync), even though it is reachable via OSPF. With
> OSPF, shouldn't BGP think that it is sync, and installs it as best
> route?
>
> Am I missing something here?
>
> RouterC#sh ip bgp
> BGP table version is 8, local router ID is 172.16.0.2
> Status codes: s suppressed, d damped, h history, * valid, > best, i -
> internal
> Origin codes: i - IGP, e - EGP, ? - incomplete
>
> Network Next Hop Metric LocPrf Weight Path
> * i150.150.150.0/24 193.16.0.2 0 100 0 (65530) i
> *>i172.16.0.0/30 172.16.0.1 0 100 0 ?
> * i172.16.0.12/30 172.16.0.18 30 100 0 ?
> *>i172.16.0.16/30 172.16.0.1 0 100 0 ?
> *>i193.16.0.0/30 172.16.0.1 0 100 0 ?
> * i193.16.0.8/30 172.16.0.18 0 100 0 (65532) i
>
> RouterC#sh ip bgp 172.16.0.12/30
> BGP routing table entry for 172.16.0.12/30, version 0
> Paths: (1 available, no best path)
> Not advertised to any peer
> Local
> 172.16.0.18 (metric 128) from 172.16.0.1 (193.16.0.1)
> Origin incomplete, metric 30, localpref 100, valid, internal,
> not synchronized, ref 2
>
> RouterC#sh ip route
> Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B -
> BGP
> D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
> N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
> E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
> i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, * -
> candidate default U - per-user static route, o - ODR
>
> Gateway of last resort is not set
>
> 172.16.0.0/30 is subnetted, 3 subnets
> O 172.16.0.16 [110/128] via 172.16.0.1, 01:43:32, Serial1
> O 172.16.0.12 [110/192] via 172.16.0.1, 01:43:32, Serial1 <--
> but it is reachable via OSPF ??
> C 172.16.0.0 is directly connected, Serial1
> 193.16.0.0/30 is subnetted, 1 subnets
> O 193.16.0.0 [110/74] via 172.16.0.1, 01:43:32, Serial1
> RouterC#
>
> Thanks all!
>
> H.
>
> http://www.sold.com.au - SOLD.com.au
> - Find yourself a bargain!



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