[45611] in North American Network Operators' Group
Re: Reducing Usenet Bandwidth
daemon@ATHENA.MIT.EDU (Stephen Griffin)
Mon Feb 11 21:31:01 2002
To: jared@puck.Nether.net (Jared Mauch)
Date: Tue, 5 Feb 2002 10:40:20 -0500 (EST)
From: Stephen Griffin <stephen.griffin@rcn.com>
Cc: nanog@merit.edu
Message-Id: <20020212021144.94EBA9EF1C@okeeffe.bestweb.net>
Errors-To: owner-nanog-outgoing@merit.edu
In the referenced message, Jared Mauch said:
>
> I think you are refering to cisco bugid: CSCdv47188
>
> -- snip --
> If the first entry in the Multicast Border Gateway Protocol (MBGP)
> routing table is supernet of the destination IP address or the MBGP
> route exists but does not have the best path, Reverse Path Forwarding
> (RPF) lookup will fail or return a unicast Border Gateway Protocol (BGP)
> route if a unicast BGP route exists.
>
> Workaround: Remove the first entry or add a dummy route that is
> smaller than the first entry. In case of a MBGP route without a best
> path, change the network configuration to ensure that the specified
> destination address has the best path.
> -- snip --
This does seem to resemble the issue, but in my discussion with cisco
it didn't seem they intended on deploying resources on the corner
cases I described. I'll check to see how the above bug relates to
those issues.
