Multicast Listener Discovery (MLD) Snooping

Displaying MLD Status and Configuration

Current MLD Configuration

Syntax: show ipv6 mld config

Displays current global MLD configuration for all MLD- enabled VLANS on the switch.

show ipv6 vlan <vid> config

Displays current MLD configuration for the specified VLAN, including per-port configuration information.

vid—VLAN ID

For example, the general form of the command might look like this:

ProCurve# show ipv6 mld config

MLD Service Config

Control

unknown multicast

[Yes] : Yes

Forced fast leave timeout

[4] : 4

VLAN ID VLAN NAME

MLD Enabled Querier Allowed

-------

---------------

----------- ---------------

8

VLAN8

Yes

Yes

9

VLAN9

Yes

Yes

Figure 7-6. Example of a Global MLD Configuration

The following information, for all MLD-enabled VLANs, is shown:

■Control unknown multicast: If this is set to YES, any IPv6 multicast packets that are not joined by an MLD host will be sent only to ports that have detected a multicast router or ports that are administratively for­ warded. If this is set to NO (or if MLD snooping is disabled), unjoined IPv6 multicast packets will be flooded out all ports in the VLAN.

■Forced fast leave timeout: the interval between an address specific query and a forced fast leave (assuming no response), in tenths of seconds

■For each VLAN that has MLD enabled:

•VLAN ID and name

•whether MLD is enabled on the VLAN (default NO, but the VLAN will not show up on this list unless MLD is enabled)

•whether the switch can act as querier for the VLAN (default YES)

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