QTECH QSW-3400 Инструкция по настройке - Manual (Page 289)

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The configuration of Switch2 is the same as the switch in scenario 1, SwitchA takes the place
of Multicast Router in scenario 1. L et’s assume VLAN 60 is configured in SwitchA, including
ports 1, 2, 10 and 12. Port 1 connects to the multicast server, and port 2 connects to Switch2.
In order to send Query at regular interval, IGMP query must enabled in Global mode and in
VLAN60.
The configuration steps are listed below:
SwitchA#config
SwitchA(config)#ip igmp snooping
SwitchA(config)#ip igmp snooping vlan 60
SwitchA(config)#ip igmp snooping vlan 60 L2-general-querier
SwitchB#config
SwitchB(config)#ip igmp snooping
SwitchB(config)#ip igmp snooping vlan 100
SwitchB(config)#ip igmp snooping vlan 100 mrouter interface ethernet
1/1
Multicast Configuration
The same as scenario 1
IGMP Snooping listening result:
Similar to scenario 1
36.3.4 IGMP Snooping Troubleshooting
On IGMP Snooping function configuration and usage, IGMP Snooping might not run properly
because of physical connection or configuration mistakes. So the users should note that:

Make sure correct physical connection

Activate IGMP Snooping on whole configuration mode (use ip igmp snooping)

Configure IGMP Snooping at VLAN on whole configuration mode ( use ip igmp
snooping vlan <vlan-id>)

Make sure one VLAN is configured as L2 common checker in same mask, or make
sure configured static mrouter

Use show ip igmp snooping vlan <vid> command check IGMP Snooping information