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Command Line Interface
4-236
4
Command Usage
Multicast router port types displayed include Static or Dynamic.
Example
The following shows that port 11 in VLAN 1 is attached to a multicast router:
IGMP Commands (Layer 3)
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
IGMP query can be enabled globally at Layer 2 via the ip igmp snooping
command, or enabled for specific VLAN interfaces at Layer 3 via the ip igmp
command. (Layer 2 query is disabled if Layer 3 query is enabled.)
Console#show ip igmp snooping mrouter vlan 1
VLAN M'cast Router Ports Type
---- ------------------- -------
1 Eth 1/11 Static
2 Eth 1/12 Dynamic
Console#
Table 4-77 IGMP Commands (Layer 3)
Command Function Mode Page
ip igmp Enables IGMP for the specified interface IC 4-236
ip igmp robustval Configures the expected packet loss IC 4-237
ip igmp query-interval Configures frequency for sending host query messages IC 4-238
ip igmp max-resp-interval Configures the maximum host response time IC 4-238
ip igmp
last-memb-query-interval
Configures frequency for sending group-specific host query
messages
IC 4-239
ip igmp version Configures IGMP version used on this interface IC 4-240
show ip igmp interface Displays the IGMP configuration for specified interfaces NE, PE 4-240
clear ip igmp group Deletes entries from the IGMP cache PE 4-241
show ip igmp groups Displays detailed information for IGMP groups NE, PE 4-241