Chapter 22
| Multicast Filtering Commands
IGMP (Layer 3)
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IGMP (Layer 3)
This section describes commands used to configure Layer 3 Internet Group
Management Protocol (IGMP) on the switch.
ip igmp This command enables IGMP on a VLAN interface. Use the no form of this
command to disable IGMP on the specified interface.
Syntax
[no] ip igmp
Default Setting
Disabled
Command Mode
Interface Configuration (VLAN)
Command Usage
â—† IGMP (including query functions) can be enabled for specific VLAN interfaces at
Layer 3 through the ip igmp command.
â—† When a multicast routing protocol, such as PIM - Dense Mode, is enabled, IGMP
is also enabled.
Example
Console(config)#interface vlan 1
Console(config-if)#ip igmp
Console(config-if)#end
Table 124: IGMP Commands (Layer 3)
Command Function Mode
ip igmp Enables IGMP for the specified interface IC
ip igmp last-member-
query-interval
Configures the frequency at which to send query messages
in response to receiving a leave message
IC
ip igmp max-resp-interval Configures the maximum host response time IC
ip igmp query-interval Configures frequency for sending host query messages IC
ip igmp robustval Configures the expected packet loss IC
ip igmp static-group Configures the router to be a static member of a multicast
group on the specified VLAN interface
IC
ip igmp version Configures IGMP version used on this interface IC
clear ip igmp group Deletes entries from the IGMP cache PE
show ip igmp groups Displays information for IGMP groups PE
show ip igmp interface Displays multicast information for the specified interface PE
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