KB.15.15

This command disables or re-enables the ability for the switch to become querier

if necessary.

The no version of the command disables the querier function on the switch. The

show ip igmp config command displays the current querier command.

Default querier capability: Enabled

Configuring the querier interval

To specify the number of seconds between membership queries, enter this command with the

desired interval.

Syntax:

[no] ip igmp querier interval [5-300]

NOTE: This command must be issued in a VLAN context.

Specifies the number of seconds between membership queries. The no form of the

command sets the interval to the default of 125 seconds.

Default: 125 seconds

For example, to set the querier interval to 300 seconds on ports in VLAN 8:

HP Switch(vlan-8)# ip igmp querier interval 300

Configuring static multicast groups

Use this command to configure a group on the switch so that multicast traffic for that group can

be forwarded with a receiver host. Traffic will be flooded for this group.

Syntax:

[no] ip igmp static-group group-address

NOTE: This command must be issued in a VLAN context.

Creates the IGMP static group with the specified group address on the selected

VLAN. The no form of the command deletes the static group on the selected VLAN.

Configuring fast-leave IGMP

For information, see “Automatic fast-leave IGMP” (page 27).

Syntax:

[no] ip igmp fastleave port-list

Enables IGMP fast-leaves on the specified ports in the selected VLAN.

The no form of the command disables IGMP fast-leave on the specified ports in the

selected VLAN.

Use show running to display the ports per-VLAN on which fast-leave is disabled.

Default: Enabled

Configuring forced fast-leave IGMP

For information about forced fast-leave, see “Forced fast-leave IGMP” (page 29).

Syntax:

[no] vlan vid ip igmp forcedfastleave port-list

20 Multimedia Traffic Control with IP Multicast (IGMP)