Hi, we have a cat6509 at the core of our network and a boatload of 3550s on the spokes. We are working on some disk imaging and need to enable multicasting acrossed the network. Looks like I need to enable igmp on the 6509? Anything need to be done on the 3550s? Sorry, pretty much a cisco novice here. Anything I need to look out for? Thanks in advance! Jeff