bgp problem

Hi all,

I had a strange situation.In R1 some bgp prefixes shown as rip failure but
somehow they have been advertised to R5 .In r5 in routing table they shown
as normal routes came from bgp table.I will go fro a troobleshooting but
before I want to knoe .Is it possible for a prefix which has rib failure to
be advertised to a ebgp neighbor?

As far as I know for a prefix to be advertised it has to be chosen best and
go to routing table.Am I wrong?

Rack9R1#sh ip bgp neighbors 136.9.16.5 ad
Rack9R1#sh ip bgp neighbors 136.9.16.5 advertised-routes
% No such neighbor or address family
Rack9R1#sh ip bgp neighbors 136.9.15.5 advertised-routes
BGP table version is 1184, local router ID is 150.9.1.1
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
r>i28.119.16.0/24 54.9.3.254 0 100 0 54 i
r>i28.119.17.0/24 54.9.3.254 0 100 0 54 i
r>i54.9.3.0/24 136.9.136.6 0 100 0 i
r>i112.0.0.0 54.9.3.254 0 100 0 54 50 60 i
r>i113.0.0.0 54.9.3.254 0 100 0 54 50 60 i
r>i114.0.0.0 54.9.3.254 0 100 0 54 i
r>i115.0.0.0 54.9.3.254 0 100 0 54 i
r>i116.0.0.0 54.9.3.254 0 100 0 54 i
r>i117.0.0.0 54.9.3.254 0 100 0 54 i
r>i118.0.0.0 54.9.3.254 0 100 0 54 i
r>i119.0.0.0 54.9.3.254 0 100 0 54 i
Total number of prefixes 11
Rack9R1#sh ip bg
Rack9R1#sh ip bgp
BGP table version is 1184, local router ID is 150.9.1.1
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
r>i28.119.16.0/24 54.9.3.254 0 100 0 54 i
r>i28.119.17.0/24 54.9.3.254 0 100 0 54 i
r>i54.9.3.0/24 136.9.136.6 0 100 0 i
r>i112.0.0.0 54.9.3.254 0 100 0 54 50 60 i
r>i113.0.0.0 54.9.3.254 0 100 0 54 50 60 i
r>i114.0.0.0 54.9.3.254 0 100 0 54 i
r>i115.0.0.0 54.9.3.254 0 100 0 54 i
r>i116.0.0.0 54.9.3.254 0 100 0 54 i
r>i117.0.0.0 54.9.3.254 0 100 0 54 i
r>i118.0.0.0 54.9.3.254 0 100 0 54 i
r>i119.0.0.0 54.9.3.254 0 100 0 54 i
*> 205.90.31.0 136.9.15.5 0 200 254 ?
*> 220.20.3.0 136.9.15.5 0 200 254 ?
*> 222.22.2.0 136.9.15.5 0 200 254 ?
Rack9R1#
RSRack9AS>5
[Resuming connection 5 to R5 ... ]
Aug 30 06:35:34.351: %OSPF-5-ADJCHG: Process 1, Nbr 150.9.4.4 on Seria
Rack9R5#sh ip bg
Rack9R5#sh ip bgp
BGP table version is 15, local router ID is 150.9.5.5
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
* 28.119.16.0/24 136.9.245.2 0 300 100 54 i
*> 136.9.15.1 0 100 54 i
* 28.119.17.0/24 136.9.245.2 0 300 100 54 i
*> 136.9.15.1 0 100 54 i
* 54.9.3.0/24 136.9.245.2 0 300 100 i
*> 136.9.15.1 0 100 i
* 112.0.0.0 136.9.245.2 0 300 100 54 50
60 i
*> 136.9.15.1 0 100 54 50 60 i
* 113.0.0.0 136.9.245.2 0 300 100 54 50
60 i
*> 136.9.15.1 0 100 54 50 60 i
* 114.0.0.0 136.9.245.2 0 300 100 54 i
*> 136.9.15.1 0 100 54 i
* 115.0.0.0 136.9.245.2 0 300 100 54 i
*> 136.9.15.1 0 100 54 i
* 116.0.0.0 136.9.245.2 0 300 100 54 i
*> 136.9.15.1 0 100 54 i
* 117.0.0.0 136.9.245.2 0 300 100 54 i
   Network Next Hop Metric LocPrf Weight Path
*> 136.9.15.1 0 100 54 i
* 118.0.0.0 136.9.245.2 0 300 100 54 i
*> 136.9.15.1 0 100 54 i
* 119.0.0.0 136.9.245.2 0 300 100 54 i
*> 136.9.15.1 0 100 54 i
*> 205.90.31.0 192.10.9.254 0 0 254 ?
*> 220.20.3.0 192.10.9.254 0 0 254 ?
*> 222.22.2.0 192.10.9.254 0 0 254 ?
Rack9R5#ship ro
Rack9R5#sh ip ro
Rack9R5#sh ip route bg
Rack9R5#sh ip route bgp
B 119.0.0.0/8 [20/0] via 136.9.15.1, 00:04:15
B 118.0.0.0/8 [20/0] via 136.9.15.1, 00:04:15
B 222.22.2.0/24 [20/0] via 192.10.9.254, 00:04:15
B 117.0.0.0/8 [20/0] via 136.9.15.1, 00:04:15
B 220.20.3.0/24 [20/0] via 192.10.9.254, 00:04:15
B 116.0.0.0/8 [20/0] via 136.9.15.1, 00:04:15
B 115.0.0.0/8 [20/0] via 136.9.15.1, 00:04:15
B 114.0.0.0/8 [20/0] via 136.9.15.1, 00:04:15
     54.0.0.0/24 is subnetted, 1 subnets
B 54.9.3.0 [20/0] via 136.9.15.1, 00:04:15
B 113.0.0.0/8 [20/0] via 136.9.15.1, 00:04:15
B 112.0.0.0/8 [20/0] via 136.9.15.1, 00:04:15
     28.0.0.0/24 is subnetted, 2 subnets
B 28.119.17.0 [20/0] via 136.9.15.1, 00:04:15
B 28.119.16.0 [20/0] via 136.9.15.1, 00:04:15
B 205.90.31.0/24 [20/0] via 192.10.9.254, 00:04:15
Rack9R5

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Received on Mon Aug 30 2010 - 16:41:57 ART