All things related to multicast

[Dave Hartzell <>]

Has anyone tested some of the existing Cisco QoS features with 
multicast?  There has been significant testing with unicast, but in my 
attempts to test multicast, I haven't had any luck.

I've found that my 7507 isn't acting upon DSCP tagged multicast packets. 
 Everything works fine with unicast.

I'm running 12.2.7 mainline, and there is a bug in this version of IOS 
that breaks LLQ'ing when dCEF is turned on....turn off dCEF (RSP CEF is 
fine) and all works well.  See Bug ID:  CSCdw51410 for more info.

I've just started checking DSCP tagged multicast, and maybe I'm missing 
something....do I need to specify 224.0.0.0/4 ?

Any ideas?

Dave Hartzell