nanog mailing list archives

Re: Policy Routing


From: <jlewis () lewis org>
Date: Sun, 26 Aug 2001 01:27:13 -0400 (EDT)


On Sun, 26 Aug 2001, John Fraizer wrote:

Rereading your post, one would believe that since "Company X" is a BGP
customer of yours, you're going to be sending them a full view.  Unless
there is a knob that I'm not familiar with, that means that you're going
to be sending them the _BEST_ routes that you see in your core and not
just those from "NSP A" to which you are proposing to policy-route all of
"Customer X's" traffic.  If this is indeed the case, I would think that
policy-routing the customers traffic destined for "prefix Y" via a
path other than the path listed in the NLRI you're sending "Customer X" on
their BGP feed is outright fraud.

Suppose you apply an output route-map on their BGP session that prepends
the heck out of paths where peer-A isn't your next as-hop?  That way,
you're giving them full routes and making it clear via BGP that if they
have another path via another provider for non peer-A routes, the other
will be better.

-- 
----------------------------------------------------------------------
 Jon Lewis *jlewis () lewis org*|  I route
 System Administrator        |  therefore you are
 Atlantic Net                |
_________ http://www.lewis.org/~jlewis/pgp for PGP public key_________


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