[45536] in North American Network Operators' Group

home help back first fref pref prev next nref lref last post

Re: Reducing Usenet Bandwidth

daemon@ATHENA.MIT.EDU (Jared Mauch)
Tue Feb 5 16:34:15 2002

Date: Tue, 5 Feb 2002 16:29:48 -0500
From: Jared Mauch <jared@puck.Nether.net>
To: Stephen Griffin <stephen.griffin@rcn.com>
Cc: jared@puck.Nether.net, nanog@merit.edu
Message-ID: <20020205212948.GC22848@puck.nether.net>
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <200202052128.QAA09317@elektra.ultra.net>
Errors-To: owner-nanog-outgoing@merit.edu


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.

home help back first fref pref prev next nref lref last post