KB.15.15

Default: 2

Example 44 To set the number of times to retry a query to 4 on ports on VLAN 8:

HP Switch(vlan-8)# ipv6 mld robustness 4

Configuring the Last Member Query Interval

You can specify the amount of time that the querier waits to receive a response from members to

a group-specific query message by entering this command.

Syntax

[no] ipv6 mld last-member-query-interval 1 - 2

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

Sets the amount of time that the querier waits to receive a response from members

to a group-specific query message.

It also specifies the amount of time between successive groupspecific query

messages.

The no form of the command sets the interval to the default of 1 second.

Default: 1 second.

Example 45 To set the amount of time the querier waits to 20 on VLAN 8:

HP Switch(vlan-8)# ipv6 mld last-member-query-interval 2

Configuring Fast Learn

The Fast Learn option allows fast convergence of multicast traffic after a topology change. When

a new port joins or moves to a forwarding state, MLD sends joins for the groups it maintains.

For MLDv1, a join is transmitted for each group if the switch is a non-querier. If the switch is a

querier, an MLDv1 query is sent to learn the group on that port.

For MLDv2, an IS_EX report is sent when the switch is a non-querier. If the switch is a querier, an

MLDv2 query is sent on the port to learn the group.

This command is executed in the global config context

Syntax

[no] ipv6 mld fastlearn [ port-list | all ]

This command enables fast learn on the specified ports in a VLAN.

The no form of the command disables the fast learn function on the specified ports.

The all option enabled or disables all ports.

Default: Disabled

Example 46 To enable fastlearn on ports 5 and 6:

HP Switch(config)# ipv6 mld fastlearn 5 - 6

Configuring fastleave

For more information on fast leave, see “Fast leaves and forced fast leaves” (page 83).

72 Multicast Listener Discovery (MLD) Snooping