MLD Snooping

To support selective IPv6 Multicast forwarding, bridge Multicast filtering must be enabled (in the Multicast Properties), and MLD Snooping must be enabled globally and for each relevant VLAN in the MLD Snooping pages.

To enable MLD Snooping and configure it on a VLAN, complete the following:

Procedure

Step 1

Click Multicast > MLD Snooping.

Note

MLD Snooping is only operational when Bridge Multicast Filtering is enabled and can be enabled here Multicast Properties.

Step 2

Enable or disable the following features:

  • MLD Snooping Status—Select to enable MLD snooping globally on all interfaces.

  • MLD Querier Status—Select to enable MLD querier globally on all interfaces.

Step 3

To configure MLD proxy on an interface, select a static VLAN and click Edit. Enter the following fields:

OptionDescription

VLAN

Select the VLAN ID from the dropdown list.

MLD Snooping Status

Select to enable MLD Snooping on the VLAN. The device monitors network traffic to determine which hosts have asked to be sent Multicast traffic. The device performs MLD snooping only when MLD snooping and Bridge Multicast filtering are both enabled.

MRouter Ports Auto Learn

Select to enable Auto Learn of the Multicast router.

Immediate Leave

Select to enable the switch to remove an interface that sends a leave message from the forwarding table without first sending out MAC-based general queries to the interface. When an MLD Leave Group message is received from a host, the system removes the host port from the table entry. After it relays the MLD queries from the Multicast router, it deletes entries periodically if it does not receive any MLD membership reports from the Multicast clients. When enabled, this feature reduces the time it takes to block unnecessary MLD traffic sent to a device port.

Last Member Query Counter

Number of MLD group-specific queries sent before the device assumes there are no more members for the group, if the device is the elected querier.

  • Use Query Robustness (x)—The number in parentheses is the current query robustness value.

  • User Defined—Enter a user-defined value.
Step 4

Click Apply. The Running Configuration file is updated.

Note

Changes in MLD Snooping timers configuration, such as: Query Robustness, Query Interval etc. do not take effect on timers which already created.