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C3750 and Multicast

How do I enable multicast control on a 3750 switch and do I have to enable it for each VLAN as well?

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Re: C3750 and Multicast

for IGMP Snooping, it is enable by default. If you are referring to ip multicast routing (L3 multicast) it's as follows:

conf t

ip muticast-routing

interface vlan x

ip pim sparse-dense mode

or

ip pim sparse mode

or

ip pim dense mode

Q. What is Sparse-Dense?

A. Sparse-Dense is an interface configuration that allows both DM groups and SM groups to flow across that interface. It is normally only applied when Auto-RP is used to send RP information.

This link is intorduction to multicast presentatoin, the same presentation given at networkers:

http://www.cisco.com/application/pdf/en/us/guest/products/ps6552/c1161/cdccont_0900aecd80310883.pdf

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