From: Joe Chang (changjoe@earthlink.net)
Date: Wed Mar 29 2006 - 11:11:40 GMT-3
Depends on what the lab is asking for. RIB Failure simply means the route
was not chosen from the BGP, but another process instead.
----- Original Message -----
From: "Mushtaq A. Khan" <mak.ccie2b@gmail.com>
To: "Mohammed Shameen Abdul Jabbar" <ccie.xpert@gmail.com>; "Geert Nijs"
<geert.nijs@simac.be>; "Jonathan Stevens"
<jonathanstevens.net@googlemail.com>; "Andrew Ballantyne (aballant)"
<aballant@cisco.com>; <ccielab@groupstudy.com>
Sent: Wednesday, March 29, 2006 8:43 AM
Subject: Re: RIB failure in BGP?
> 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
> > > > >
> > > >
> > >
>_______________________________________________________________________
> > > > >Subscription information may be found at:
> > > > >http://www.groupstudy.com/list/CCIELab.html
> > > >
> > > >
> > >
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