3Com 5500G-EI Command Reference Guide - Page 261

IGMP Configuration Commands 261 A multicast router periodically sends out IGMP query messages to attached segments to find hosts that belong to different multicast groups. The query interval can be modified according to the practical conditions of the network. Related command: igmp timer other-querier-present Example Configure to transmit the host-query message every 60 seconds via VLAN-interface2. system-view System View: return to User View with Ctrl+Z [SW5500]interface Vlan-interface 2 [SW5500-vlan-interface2]igmp timer query 60 igmp version Syntax igmp version { 1 | 2 } undo igmp version View VLAN Interface View Parameter 1: IGMP Version 1. 2: IGMP Version 2. By default, IGMP Version 2 is used. Description Use the igmp version command to specify the version of IGMP that a router uses. Use the undo igmp version command to restore the default value. All routers on a subnet must support the same version of IGMP. After detecting the presence of IGMP Version 1 system, the Switch cannot automatically change to Version 2. Example Run IGMP Version 1 on VLAN-interface10. system-view System View: return to User View with Ctrl+Z [SW5500]interface Vlan-interface 10 [SW5500-vlan-interface10]igmp version 1 reset igmp group Syntax reset igmp group { all | interface interface-type interface-number { all | group-address [ group-mask ] } } View User View