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wait for a response to a group-specific or groupand-source-specific query message. The
overall time to wait for a response (Last Member Query Time) is the value assigned to
LLQI, multiplied by the Last Member Query Count (which is fixed at 2). (Range: 1-31744
tenths of a second in multiples of 10; Default: 1 second)
When a multicast host leaves a group, it sends an MLD leave message. When the leave
message is received by the switch, it checks to see if this host is the last to leave the group
by sending out an MLD group-specific or group-and-source-specific query message, and
starts a timer. If no reports are received before the timer expires, the group record is
deleted, and a report is sent to the upstream multicast router.
A reduced value will result in reduced time to detect the loss of the last member of a group
or source, but may generate more burst traffic.
This attribute will take effect only if MLD snooping proxy reporting is enabled (see page
141).
◆ URI – The Unsolicited Report Interval specifies how often the upstream interface should
transmit unsolicited MLD reports when report suppression/proxy reporting is enabled.
(Range: 0-31744 seconds, Default: 1 second)
WEB INTERFACE
To configure VLAN settings for MLD snooping and query:
1. Click Configuration, IPMC, MLD Snooping, VLAN Configuration.
2. Adjust the MLD settings as required.
3. Click Save.
Port Group Filtering for MLD Snooping
Use the MLD Snooping Port Group Filtering Configuration page to filter specific multicast
traffic. In certain switch applications, the administrator may want to control the multicast
services that are available to end users; for example, an IP/TV service based on a specific
subscription plan. The MLD filtering feature fulfills this requirement by denying access to
specified multicast services on a switch port.
PATH
Configuration \ IPMC \ MLD Snooping \ Port Group Filtering
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