System information
Multicast Filtering
3-109
CLI – This example modifies the settings for multicast filtering, and then displays the 
current status.
Displaying Interfaces Attached to a Multicast Router
Multicast routers that are attached to ports on the switch use information obtained 
from IGMP, along with a multicast routing protocol such as DVMRP or PIM, to 
support IP multicasting across the Internet. These routers may be dynamically 
discovered by the switch or statically assigned to an interface on the switch.
You can use the Multicast Router Port Information page to display the ports on this 
switch attached to a neighboring multicast router/switch for each VLAN ID.
Command Attributes
• VLAN ID – ID of configured VLAN (1-4094).
• Multicast Router List – Multicast routers dynamically discovered by this switch 
or those that are statically assigned to an interface on this switch.
Web – Click IGMP Snooping, Multicast Router Port Information. Select the required 
VLAN ID from the scroll-down list to display the associated multicast routers.
Console(config)#ip igmp snooping 4-156
Console(config)#ip igmp snooping querier 4-160
Console(config)#ip igmp snooping query-count 10 4-160
Console(config)#ip igmp snooping query-interval 100 4-161
Console(config)#ip igmp snooping query-max-response-time 20 4-161
Console(config)#ip igmp snooping query-time-out 300 4-162
Console(config)#ip igmp snooping version 2 4-157
Console(config)#exit
Console#show ip igmp snooping 4-158
 Service status : Enabled
 Querier status : Enabled
 Query count : 10
 Query interval : 100 sec
 Query max response time : 20 sec
 Router port expire time: 300 sec
 IGMP snooping version : Version 2
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