Trying to monitor IGMP replies with a packet sniffer attached to G 1/0/11 of a Catalyst 3750.
Devices processing multicast streams attached to G 1/0/1 through G 1/0/8 (devices are receiving/processing multicast streams.
Monitor session 1 config:
Mon session 1 source int G 1/0/1 both
Mon session 1 source int G 1/0/2-3, 1/0/7-8 rx
Mon session 1 desination int g 1/0/11.
I am able to see IGMP reports from the switch and my packetsniffer/PC, as well as the IGMP queries from the switch, but cannot see any IGMP reports from the devices atttached to ports 1-3 or 7-8.
This configuration worked on an older catalyst 3550, but will not work on the 3750.