[47761] in North American Network Operators' Group
Re: BGP and aggregation
daemon@ATHENA.MIT.EDU (Andy Walden)
Sun May 12 19:08:52 2002
Date: Sun, 12 May 2002 17:02:07 -0500 (CDT)
From: Andy Walden <andy@tigerteam.net>
To: Stephen Griffin <stephen.griffin@rcn.com>
Cc: nanog@merit.edu
In-Reply-To: <200205122231.SAA28682@elektra.ultra.net>
Message-ID: <Pine.LNX.4.44.0205121649370.32288-100000@vision.tigerteam.net>
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Errors-To: owner-nanog-outgoing@merit.edu
On Sun, 12 May 2002, Stephen Griffin wrote:
> BGP will discard any prefix with its own AS in the path, for loop
> prevention. Hence, one half of the AS would still be unable to
> reach the other half. This is why a partitioned AS is a failure
> condition. A tunnel is a means to keep the AS nonpartitioned.
>
> There are other ways to treat the symptoms, but they aren't
> particularly good, imho.
True. This also assumes that we aren't talking about vanilla access here
or perhaps you don't have local servers. This could also be fixed with a
floating static I suppose as well. At any rate, it depends on your setup I
suppose. Connecting remote offices != Bad, Vanilla access = probably
tolerable.
andy
--
PGP Key Available at http://www.tigerteam.net/andy/pgp
