[45086] in North American Network Operators' Group
Re: router startup behavior
daemon@ATHENA.MIT.EDU (Danny McPherson)
Tue Jan 15 23:41:08 2002
Message-Id: <200201160531.g0G5V4M06316@tcb.net>
To: "'nanog@merit.edu'" <nanog@merit.edu>
From: Danny McPherson <danny@tcb.net>
Reply-To: danny@tcb.net
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Date: Tue, 15 Jan 2002 22:31:04 -0700
Errors-To: owner-nanog-outgoing@merit.edu
>
> The routers in question run a BGP redistribution process every
> 60 seconds and it just happened to run (quite often) just as
> filters were being rewritten, resulting in "the gunk" not being
> tagged as "keep internal" and therefore being advertised
> externally. A subsequent run of the BGP process realized a
> policy was in place withdrew the routes.
I should clarify here:
A subsequent run of the BGP resdistribution process with the
newly rewritten policy in place resulted in the routes being
tagged with the appropriate "keep internal" community and "re-
advertised". Upon receipt of the now tagged routes, routers that
had previously announced the untagged routes withdrew them (per
egress policy specification).
-danny
