The stupidity of trying to "fix" DHCPv6
owen at delong.com
Tue Jun 14 08:41:06 UTC 2011
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.
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