Example 1e: Cisco Catalyst 3750 (12.2(25)SE) snooping IGMP v3
This looks almost the same as example 1b, including the wierd
IGMP v2 leave spoofed by the switch. The one new thing that happens is
the group-specific query sent by the router is flooded out all ports. It's
not clear to me why this is necessary but it looks like Cisco added it between
IOS releases.
See example 2e for a detailed analysis that shows this
wierdness.
The traces
Raw tcpdump traces and console logs are here:
host 10
host 11
host 12
host 13
switch
router