So a few questions that I've struggled to find firm answers on.
1: Does multicast use arp? So does it ask for a corresponding IP address?
I think the answer is no, as it translates the IP to a MAC itself. But I'd like confirmation of this please. Wireshark would also suggest it doesn't.
2: When a machine engages in multicast, what MAC address in the CAM table does the switch record for the machine? On an access port we can't allow 2 ports to have the same mac can we?