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Configuring the Switch
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Web – Click IGMP Snooping, IGMP Configuration. Adjust the IGMP settings as
required, and then click Apply. (The default settings are shown below.)
Figure 3-101. IGMP Configuration
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.
Console(config)#ip igmp snooping 4-218
Console(config)#ip igmp snooping querier 4-222
Console(config)#ip igmp snooping query-count 10 4-222
Console(config)#ip igmp snooping query-interval 100 4-223
Console(config)#ip igmp snooping query-max-response-time 20 4-224
Console(config)#ip igmp snooping query-time-out 300 4-224
Console(config)#ip igmp snooping version 2 4-220
Console(config)#exit
Console#show ip igmp snooping 4-220
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
Console#