nanog mailing list archives

Re: BGP noise tonight? (fwd)


From: "Joel Baker" <lucifer () lightbearer com>
Date: Tue, 9 Oct 2001 13:29:34 -0600


On Tue, Oct 09, 2001 at 12:27:55PM -0400, Christopher A. Woodfield wrote:

As it turns out, both 2008 and 3300 are Infonet, US and Europe. So this 
was their foo.

The problem is obviously that the RFC-proscribed behavior with bad 
prefixes works on paper, as it serves to isolate the network originating 
the problem prefix. However, that is totally dependent on /every/ router 
doing so, thus preventing the problem from spreading, which as we 
discovered, does not happen.

The ideal alternative behavior is to drop the bad prefix--not dropping 
the peer, but not passing the bad prefix along either. I've been told that 
there are recent Cisco IOS revs that do this instead of passing it along, 
but they have other unresolved bugs that prevent their widespread use.

Should someone think about possibly updating the RFC?

It's already written. However, the general impression a month and a half
ago was that it wasn't likely to go anywhere. Since I'm not really up to
trying to make headway in the relevant groups, anyone who *does* feel like
it and wants to see the proposal should feel welcome to contact me off-list
about it. It's really a fairly obvious set of extensions (and can, in fact,
be done with only extensions).
-- 
***************************************************************************
Joel Baker                           System Administrator - lightbearer.com
lucifer () lightbearer com              http://users.lightbearer.com/lucifer/


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