From: Mushtaq A. Khan (mak.ccie2b@gmail.com)
Date: Wed Mar 29 2006 - 10:43:29 GMT-3
All,
Can anyone give some advise as to how critical it is to see RIB-Failure
where it becomes unavoidable as I mentioned in my earlier posting? Can we
loose points because of this?
Thanks,
Mushtaq
On 3/25/06, Mushtaq A. Khan <mak.ccie2b@gmail.com> wrote:
>
>
> I also have the same question especially when the synchronization is on
> and you redistribute BGP learned route in IGP so you could force iBGP
> neighbor to install it in its BGP table.
>
> Mushtaq
>
>
> On 3/25/06, Mohammed Shameen Abdul Jabbar <ccie.xpert@gmail.com> wrote:
> >
> > Hi,
> >
> > In the actual LAB, is there any problem if there are RIB failures in
> > the BGP table?
> > Any points deducted? I supose that it depends on the scenario!!
> >
> > Regards
> > shamin
> >
> > On 2/5/06, Geert Nijs <geert.nijs@simac.be> wrote:
> > > Yep this is correct.
> > > It means a route in the BGP table is selected as "best" route, but it
> > > cannot be inserted into the routing table because
> > > a route with a better AD is already present.
> > >
> > > This could be normal in the following situation:
> > > -----BB--------
> > > | |
> > > R1 ------ R2
> > >
> > > Both R1 and R2 are receiving the same routes from the backbone (eBGP).
> > > R1 and R2 are also running a iBGP session
> > > Both R1 and R2 redistribute BGP into ie EIGRP
> > > Router R1 is prefered by setting the Local Preference to ie 200 on
> > > received routes.
> > >
> > >
> > > In this situation R2 will have lots of routes marked as "RIB failure".
> > > Why ?
> > >
> > >
> > >
> > > R2 will receive the same networks from BB and from R1
> > > R1 will be prefered (LP of 200). R1 routes are iBGP routes (AD 200).
> > > R2 selects these routes as "BEST" but cannot insert these routes in
> > the
> > > routing table since EIGRP routes from R1 are already present in the
> > > routing
> > > table of R2 (AD 170 - redistributed)
> > >
> > >
> > > Geert
> > > CCIE #13729
> > >
> > > -----Oorspronkelijk bericht-----
> > > Van: nobody@groupstudy.com [mailto:nobody@groupstudy.com] Namens
> > > Jonathan Stevens
> > > Verzonden: zaterdag 4 februari 2006 17:03
> > > Aan: Andrew Ballantyne (aballant)
> > > CC: ccielab@groupstudy.com
> > > Onderwerp: Re: RIB failure in BGP?
> > >
> > >
> > > I think the definition is that BGP is unable to put the route into the
> > > routing table. This can be related to administrative distance. It is
> > not
> > >
> > > always undesirable.
> > >
> > > Andrew Ballantyne (aballant) wrote:
> > >
> > > >Hi,
> > > >
> > > >What does RIB-failure indicate in BGP?
> > > >
> > > >cheers, Andrew
> > > >
> > > >R2#sh ip bgp
> > > >BGP table version is 4, local router ID is 2.2.2.2
> > > >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> 10.1.2.0/24 1.1.1.1 0 0 65001 i
> > > >*> 10.1.8.0/24 1.1.1.1 0 65001 i
> > > >
> > >
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