Rod,
> I have never had a problem keeping a route in the FIB using a
> static to
> null0 with an admin distance of 250. I think there might be
> an issue if the
> distance is 255, unreachable.
I recall an application that required setting the distance of the route to
something less than 200, so that it overrode the IBGP distance, but the
reason escapes me. I'll need to dig up some old docs to find it. This is
more of a routing appliction hack and as you suggest, and has nothing to do
with flapping (IBGP learned or locally learned routes would still be
announced externally). Sorry for the confusion.
chris
>
> Rod
>
> > -----Original Message-----
> > From: Martin, Christian [mailto:CMartin@mercury.balink.com]
> > Sent: Friday, 21 July 2000 10:35 p.m.
> > To: 'Tatsuya Kawasaki'; cisco-nsp@iagnet.net
> > Subject: RE: [nsp] Question about BGP routing damping
> >
> >
> > The announcing router must have an exact match entry in the
> local FIB in
> > order to announce the route. The one exception is when creating
> > aggregates,
> > in which case, only a prefix-match must be made. If an
> > 'internal' or local
> > path is not available, the prefix will be withdrawn, thus causing
> > route-flapping. Most get around this by routing their static
> > announcements
> > to null0 with a high distance. Some applications require
> you to set this
> > distance to something less than 200, some not.
> >
> > chris
> >
> > > -----Original Message-----
> > > From: Tatsuya Kawasaki [mailto:tatsuya@kivex.com]
> > > Sent: Friday, July 21, 2000 2:56 PM
> > > To: cisco-nsp@iagnet.net
> > > Subject: [nsp] Question about BGP routing damping
> > >
> > >
> > >
> > > Hello,
> > >
> > > I have a simple bgp question.
> > >
> > > In the BGP statement, we defined the network.
> > >
> > > I thought network statement in the bgp statement is
> > > independent of internal routing protocol.
> > > Even if we lost the connectivity to a network,
> > > which does not cause BGP routing damping or does it?
> > >
> > > Only time that BGP routing damping occurs when you lose
> the connection
> > > to peer provided that we do not change any configuration change?
> > >
> > > Or am I missing something?
> > >
> > >
> > > Tatsuya
> > >
> > >
> > > /_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/
> > > Tatsuya Kawasaki
> > > Allegiance Telecom
> > > Unlock the Power of the Internet
> > > http://www.kivex.com
> > > Phone 301.215.6777 Fa 301.215.5991
> > > Affiliation given for identification not representation
> > > /_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/
> > >
> >
> >
> >
>
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