From: shiran guez (shiranp3@gmail.com)
Date: Sun Jan 20 2008 - 08:41:08 ARST
you can also summerize the loopback over the IGP make it less specific.
the first thing a router will check in his RIB for use is the more
specific!
On Jan 20, 2008 9:17 AM, Cielieska Nathan <ncielieska@gmail.com> wrote:
> Suzan,
>
> No.. all of these things are happening by design. First off.. its not
> a problem. Unless you have a question in a workbook that wasn't stated.
>
> You want your IGP (EIGRP, RIP, OSPF) to be chosen over IBGP.
> Remember.. IBGP is 200 AD, all of the others are lower, then EBGP is 20.
>
> Now if you need IBGP to be chosen over your IGP then you need to
> change the admin distance. The backdoor command will make your IGP
> more desirable.. this is usually vs. EBGP routes.
>
> The backdoor command allows your IGP to be your primary route.. but
> in case of IGP failure your BGP is a "backdoor" for the network.
>
> Either way, if an IGP is being chosen over BGP you will see the rib-
> failure in the RIB. This is by design because the IGP route is
> currently in use.
>
> Is there a workbook task or question that this is in relation to?
>
> Regards,
> Nate
>
>
>
> On Jan 20, 2008, at 2:08 AM, Suzan S. wrote:
>
> > Dear Cielieska,
> >
> > But is it recomended to change the administrative distance?
> > Some guys suggested to add the network backdoor command to solve
> > the problem which is better than changing the adminstrative distance.
> >
> > Thank you
> > Suzan
> >
> > Cielieska Nathan <ncielieska@gmail.com> wrote:
> > Suzan,
> >
> > In my experience, this is by design. The RIB failure is blocking BGP
> > from putting this route into the routing table because the IGP with
> > the lower administrative distance has trumped it. If you set the BGP
> > routes lower than the admin distance of the IGP, the BGP router will
> > kick those routes out of RIB-failure state.
> >
> > Regards,
> > Nate
> > On Jan 18, 2008, at 4:20 PM, Suzan S. wrote:
> >
> > > Dears,
> > >
> > > When advertiseing the loopbacks in the bgp , they appear as RIB-
> > > failure routes in the BGP table as they are advertised through the
> > > IGP which has better adminstrative distance. Any one knows how to
> > > solve the problem of these RIB-failure Routes? Do we have to change
> > > the administrative distance for the IGP or BGP ? In some documents
> > > I read that we have to use the command bgp suppress-active under
> > > the router bgp config but it does not work.
> > >
> > > Thank you All
> > >
> > > Suzan
> > >
> > >
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-- Shiran Guez MCSE CCNP NCE1 http://cciep3.blogspot.com http://www.linkedin.com/in/cciep3
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