Multicast on 3750s

[mmedwid]

I see that cgmp is not supported on Cat3750s. In other catalysts I just enabled cgmp to be sure that a multicast stream did not get forwarded to every port on the switch. What do I need to configure on the 3750 to accomplish the same end? I don't play on having any inter-vlan multicast. Just need to know how to control it within a single vlan. Thanks.

[Joseph W. Doherty · Accepted solution]

Enable IGMP snooping (believe the 3750s support it).

[mmedwid]

(config)#ip igmp snooping

...looks to have done the job. Thank-you.

Vlan 22:

--------

IGMP snooping : Enabled

IGMPv2 immediate leave : Disabled

Multicast router learning mode : pim-dvmrp

CGMP interoperability mode : IGMP_ONLY

Robustness variable : 2

Last member query count : 2

Last member query interval : 1000