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Command Line Interface
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Command Usage
• All systems on the subnet must support the same version. If there are legacy
devices in your network that only support Version 1, you will also have to
configure this switch to use Version 1.
• Some commands are only enabled for IGMPv2, including ip igmp
query-max-response-time and ip igmp query-timeout.
Example
The following configures the switch to use IGMP Version 1:
show ip igmp snooping
This command shows the IGMP snooping configuration.
Default Setting
None
Command Mode
Privileged Exec
Command Usage
See “Configuring IGMP Snooping and Query Parameters” on page 3-171 for a
description of the displayed items.
Example
The following shows the current IGMP snooping configuration:
show mac-address-table multicast
This command shows known multicast addresses.
Syntax
show mac-address-table multicast [vlan vlan-id] [user | igmp-snooping]
• vlan-id - VLAN ID (1 to 4094)
• user - Display only the user-configured multicast entries.
• igmp-snooping - Display only entries learned through IGMP snooping.
Default Setting
None
Console(config)#ip igmp snooping version 1
Console(config)#
Console#show ip igmp snooping
Service status: Enabled
Querier status: Disabled
Query count: 2
Query interval: 125 sec
Query max response time: 10 sec
Router port expire time: 300 sec
IGMP snooping version: Version 2
Console#