Long and short is that I have a switch only network (not because I wanted it, but because I was given it as a cruel joke) there are three networks per switch, and three layer three interfaces. Vlan 400,450 and g1/0/24. Unicast works through. Now I am trying to get unicast to function. There are no ACLs (removed for troubleshooting). My multicast host is on Vlan 400. I am not seeing any traffic from the host past the Vlan. (At the routed port)
PIM must be enabled on all layer 3 interfaces. You may also need an RP, or rendezvous point, for the multicast source to register with, depending on the version of IGMP you're running.
