nanog mailing list archives

Re: Reducing Usenet Bandwidth


From: Jared Mauch <jared () puck Nether net>
Date: Tue, 5 Feb 2002 16:29:48 -0500


On Tue, Feb 05, 2002 at 04:28:39PM -0500, Stephen Griffin wrote:
Actually, after confirming with Cisco, the above bug is different.
Essentially, if a router has two links, and a route in both iBGP and
iMBGP with same igp distance, local pref, mask, etc, the unicast BGP
route is chosen for RPF, rather than the multicast route. This would
lead to using the "wrong" interface.

Although it is related in that, if the RPF check was done against
the MRIB first, it would solve this bug.

        does "ip multicast multipath" help you at all either?

        that should cause it to rpf down both paths.

        - jared

-- 
Jared Mauch  | pgp key available via finger from jared () puck nether net
clue++;      | http://puck.nether.net/~jared/  My statements are only mine.


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