[c-nsp] All multicast punting to CPU on 6500

[Phil Mayers]

On 12/16/2012 10:59 AM, Robert Williams wrote:
> Hi there,
>
> Thanks for getting back to me, I'm afraid I'm not quite following you
> - so to try to answer your question here is a copy of the current
> CoPP on the test device.

I think the implication is that it's possible for a CoPP policy to 
prevent the forwarding hardware "seeing" the multicast and installing 
the hardware shortcuts to drop uninteresting traffic.

You might try disabling CoPP to see if that changes things.

You weren't very specific about the type of multicast traffic and the 
multicast config on the box. I'm going to guess it's IPv4/IPv6 multicast 
from the MAC addresses, but is the 6500 configured for multicast 
routing, and is it enabled on that interface? If so, what does "sh ip mr 
<the group>" say?

I assume you've eliminated the really obviously things like TTL=1 and IP 
options / special packet stuff?