Configuring IGMP on Routing Interfaces
17-10 IGMP Configuration
Configuring IGMP on Routing Interfaces
The Enterasys C3 switch device uses IGMP (Internet Group Management Protocol) to query for
any attached hosts who want to receive a specific multicast service. The device looks up the IP
Multicast Group used for this service and adds it to the egress list of the Level 3 interface. It then
propagates the service request on to any neighboring multicast switch/router to ensure that it will
continue to receive the multicast service.
Purpose
To configure IGMP on routing interfaces.
Commands
ip igmp
Use this command to enable the L3 IGMP Querier functionality on the switch. The no form of this
command disables IGMP Querier functionality.
Syntax
ip igmp
no ip igmp
Parameters
None.
Router: The commands covered in this section can be executed only when the device is in router
mode. For details on how to enable router configuration modes, refer to “Enabling Router
Configuration Modes” on page 24-2.
For information about... Refer to page...
ip igmp 17-10
ip igmp enable 17-11
ip igmp version 17-12
show ip igmp interface 17-12
show ip igmp groups 17-13
ip igmp query-interval 17-13
ip igmp query-max-response-time 17-14
ip igmp startup-query-interval 17-14
ip igmp startup-query-count 17-15
ip igmp last-member-query-interval 17-16
ip igmp last-member-query-count 17-16
ip igmp robustness 17-17
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