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118 CHAPTER 6: MULTICAST PROTOCOL
Advanced IGMP configuration includes:
■ Configuring the IGMP Version
■ Configuring the Interval for Sending the IGMP Group-Specific Query Packet
■ Configuring the Interval for Sending IGMP Group-Specific Query Packet
■ Configuring the Limit of IGMP Groups on an Interface
■ Configuring a Router to be a Member of a Group
■ Limiting Access to IP Multicast Groups
■ Configuring the IGMP Query Message Interval
■ Configuring the IGMP Querier Present Timer
■ Configuring the Maximum Query Response Time
■ Deleting IGMP Groups Joined on an Interface
■ Displaying and Debugging IGMP
Enabling Multicast
After multicast is enabled, IGMP will automatically run on all interfaces.
For details, see “Configuring Common Multicast ” on page 114.
Enabling IGMP on an Interface
You must enable multicast before you can execute the igmp enable command.
After this, you can initiate the IGMP feature configuration.
Perform the following configuration in VLAN interface view.
By default, IGMP is not enabled.
Configuring the IGMP Version
Perform the following configuration in VLAN interface view.
The default is IGMP Version 2.
All routers on a subnet must support the same version of IGMP. After detecting
the presence of IGMP Version 1 system, a router cannot automatically switch to
Version 1.
Table 121 Enable/Disable IGMP on an Interface
Operation Command
Enable IGMP on an interface igmp enable
Disable IGMP on an interface undo igmp enable
Table 122 Select the IGMP Version
Operation Command
Select the IGMP version that the router uses igmp version { 2 | 1 }
Restore the default setting undo igmp version