3Com 10014299 manual Make the following configuration in interface view

Configuring IGMP 507

Configuring the Version IGMP Version 2 is able to configure query message timeout and the maximum Number of IGMP at the query response time. All the systems in the same subnet must run the same IGMP

Router Interface version because the routers are not able to check the version number of IGMP currently running on the interface.

Make the following configuration in the interface view.

Table 578 Configure the IGMP Version Number Run at Router Interface

Operation	Command
Configure the version number of IGMP	igmp version { 1 2 }
operating at router interface
Restore the default value of the version	undo igmp version
number of IGMP operating at router
interface

By default, IGMP Version 2 is operates at the router interface.

If the host does not support IGMP Version 2, then the router must be configured to use IGMP Version 1.

Configuring the Time The router periodically sends membership query messages to the network it Interval of IGMP Host connects to. The query interval timer sets the time interval. Subscribers can change

Sending Query the time interval of the IGMP host that sends query messages by configuring the Messages query interval timer.

Make the following configuration in the interface view.

Table 579 Configure the Time Interval of IGMP Host Sending Query Messages

Operation	Command
Configure the time interval of IGMP host	igmp timer query seconds
sending query messages
Restore the default value of the time	undo igmp timer query
interval of IGMP host sending query
messages

By default, the interval for sending query messages is 125 seconds.

Configuring IGMP After the host receives the query message periodically sent by the router, it starts Maximum Query delay timers for each of the multicast groups it joins. A random number between Response Time zero and the maximum response time will be adopted to serve as the initial value.

The maximum response time is the query message assigned maximum response time (the maximum response time of IGMP Version 1 is fixed at 10 seconds). The host broadcasts the membership report to the router before the timer times out. If the router does not receive a membership report when the maximum query response time times out, it assumes that there is no local group member, and it does not send the received multicast message to the network it connects to.

Make the following configuration in interface view.

Table 580 Configure IGMP Maximum Query Response Time

Operation	Command
Configure IGMP maximum query response	igmp max-response-time seconds
time