[141912] in North American Network Operators' Group
Re: The stupidity of trying to "fix" DHCPv6
daemon@ATHENA.MIT.EDU (Mikael Abrahamsson)
Tue Jun 14 04:20:14 2011
Date: Tue, 14 Jun 2011 10:20:07 +0200 (CEST)
From: Mikael Abrahamsson <swmike@swm.pp.se>
To: Owen DeLong <owen@delong.com>
In-Reply-To: <745E3D5F-F183-4805-9492-D369C50776E7@delong.com>
Cc: nanog@nanog.org
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
On Tue, 14 Jun 2011, Owen DeLong wrote:
> You would need an AWFUL lot of hosts for this to add up to a few 100pps
> (or even 10pps) of multicast traffic.
On the AMSIX peering LAN there is more than 100pps of ND traffic (at least
there was when we checked). Since they do not do IPv6 multicast
intelligent handling (MLD snooping I guess) certain highend (legacy)
router platforms run into trouble because all these packets are punted to
RP.
Implementing access list that filtered all multicast traffic the linecard
didn't actually subscribe to, solved the problem.
