Manual

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Москва, Новозаводская ул., 18, стр. 1
288
The configuration of Switch2 is the same as the switch in scenario 1, SwitchA takes the place
of Multicast Router in scenario 1. Let’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