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Re: weird BGP cisco-ism? [problem resolved]
From: Phil Howard <phil () charon milepost com>
Date: Fri, 11 Jul 1997 17:58:14 -0500 (CDT)

Craig A. Huegen wrote:

On Fri, 11 Jul 1997, Matthew Kaufman wrote:

==>I redistribute in a similar way, and have the statics to null0 as well.
==>Still insisted on flapping at least twice every time it got the brief
==>hit on the /24 subnet coming from the outside world.

What routing protocol do you use?  If you're using a protocol which uses a
hold-down (read: RIP), the holddown period causes the route to be
withdrawn while marked as inaccessible in the IGP, and re-announced when
the hold-down period goes away and the static route gets inserted.

You might try "no synchronization" in BGP.  It solved some flapping for me
that I was getting between a pair of routers where the paths were always
getting marked inaccessible.  My situation was different than this but it
seems to have enough similarity that maybe...

Phil Howard KA9WGN   +-------------------------------------------------------+
Linux Consultant     |  Linux installation, configuration, administration,   |
Milepost Services    |  monitoring, maintenance, and diagnostic services.    |
phil at milepost.com +-------------------------------------------------------+

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