On 23/03/11 09:16, Peter Rathlev wrote:
On Wed, 2011-03-23 at 09:04 +0000, Phil Mayers wrote:
If you just want to drop all multicast, you could try:
int VlanXX
ip multicast boundary MULTICAST-drop
ip access-list standard MULTICAST-in
deny 224.0.0.0 15.255.255.255
Would that also discard forwarding of multicast packets L2-wise? Or only
L3-wise?
Layer 3.
There are also mls rate-limiters for this, but I'm not sure off the top
of my head which one you want - we have multicast configured so don't
need them (the box builds hardware mfib entries, which stops the CPU punts)
That has me interested: What can I configure to make the traffic
hardware swithed? Is it as simple as an IGMP querier or something like
that?
If you don't have (and don't want) a "real" multicast config, then I'm
not sure what the minimum config needed is.
It might be as little as:
ip multicast-routing
...globally.
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