[nsp] RIB-Failure ???

[George Boulescu]

This bug is fixed in 12.2.10T ... I'm waiting for the release to come
(I think it will be at the end of this month).


> CSCdx26714
>
> 1. Symptom :
>
>    If the prefix get Rib-Failre when installing into bgp table because of
>    there is already has a prefix in the routing table with a prefered admin
>    distance (like already learnd by ospf), then this prefix should not be
>    advertised to other bgp peers unless the next-hop is the same as the
> prefix
>    in the ip routing table.
>    But the behavior is that even if the next-hop is the same, this
> prefix still
>    does not advertise to it's bgp peers.
>
> 2. Conditions :
>
>    You should see the bgp prefix get a "Rib-Failure" in the output of
>    "show ip bgp <x.x.x.x> ". This will confirm that this prefix fails to
>    install into the routing table. Then check the next-hop for the bgp
> prefix
>    and the prefix that already in the ip table (it's ospf in this ddts). If
>    they are the same, then bgp should still advertise this prfix to it's bgp
>    peers.
>
> 3. Workaround :
>
>     Thers is not workaround for this problem.
>
>
>
> Ezequiel Carson wrote:
> > Hello,
> >
> >
> >       Have you seen this message on sh ip bgp ??
> >
> >
> > Paths: (1 available, best #1, RIB-failure(17))
> >
> > R2#sh ip bgp 10.0.0.0
> > BGP routing table entry for 10.0.0.0/24, version 8
> > Paths: (1 available, best #1, RIB-failure(17))
> > Multipath: iBGP
> >   Not advertised to any peer
> >   Local
> >     192.168.0.1 from 192.168.0.1 (192.168.0.1)
> >       Origin IGP, metric 0, localpref 100, valid, internal, best
> > R2#
> >
> >
> > Im running IOS 12.2(8)T5 , it ocurrs when a route is learned via OSPF
> > and BGP. OSPF wins,but BGP invalidates this prefix from his RIB and it
> > is on allowed to advertised to any peer.
> >
> >
> > Any suggestion?
> >
> > Comment: This is not happening with another version like 12.0(21)ST.
> >
> >
> > Thanks
> > Ezequiel
> >
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> >
>
>
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-- 

George Boulescu
Senior Network Engineer
RoEduNet Bucharest NOC
CCAI, CCNA