On Jun 14, 2011, at 1:20 AM, Mikael Abrahamsson wrote:
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.
ND would be a far more frequent occurrence than DHCP requests. Also, I tend to doubt that ANYONE would do DHCP on an exchange point network, so, it's not exactly an applicable example environment. Owen