All things related to multicast

[Alan Crosswell <>]

I want to define site-local as the same as link-local to constrain all 
the hokey SSDP and other 239.255/16 traffic on my campus.  Can anyone 
suggest the "right" way to do this?  I've tried blocking registers to 
the RP with "ip pim accept-register" which results in a syslog for each 
register attempt that is ignored, causing a lot of clutter.

I've also tried "ip igmp access-group" on the individual router 
interfaces since I really don't want to know about these groups. 
However, this has wierd CGMP ramifications it seems:  membership reports 
seem to cause the switch to get a CGMP join for the GDA.  v2 leaves 
however do not cause a CGMP leave to make it to the switch, so the 
static cam entry hangs aroud forever.

/a