I am trying to configure a Cisco 3750 to act as a "transparent multicast bridge". i.e. I don't want to enable pim on its interfaces and no igmp packets will go trough the interfaces as well.
I only want that multicast packets coming to the interface f1/0/1 are automatically sent to f1/0/2 and f1/0/3.
I hope I made myself clear :)
Thanks a lot.
Somehow I knew you were going to say that. ;)
The "normal" solution is to do multicast routing. Is there a particular reason why this is unacceptable?
No "easy" solution comes to my mind for what you're asking beyond it should be possible to physically link subnets (i.e. connect one VLAN port with another) and use ACLs to only permit multicast packets to flow across the link. (NB: w/o ACLs, you have something similar to what's described next.) One concern with this approach, switch would see same MAC on different ports.
Another (better/safer vs. the physical link) approach would be to combine VLANs that need to share the multicast traffic, but continue to use your subnets. I.e. instead of the usual one subnet per VLAN, multiple subnets per VLAN. You would still route unicast between subnets on the same VLAN.
BTW, just saw Giuseppe's and your response posts. Now you're describing WANs and encryption, when you asked about multicast across 3750 ports. You might want to post all the details of what your network looks like, what you're trying to accomplish, and what you see as issues.