TP-Link T1500-28PCT T1500-28PCTTL-SL2428PUN V3 User Guide - Page 257
Leave Time, MLD Snooping, Querier, Query Interval, Maximum, Response Time, Last Listener, Query Count
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Configuring Layer 2 Multicast MLD Snooping Configuration Leave Time MLD Snooping Querier Query Interval Maximum Response Time Last Listener Query Interval Last Listener Query Count General Query Source IP Static Router Ports Specify the leave time for the VLAN. When the switch receives a leave message from a port to leave a multicast group, it will wait for a leave time before removing the port from the multicast group. During the period, if the switch receives any report messages from the port, the port will not be removed from the multicast group. Exceptions are as follows: •• If the member port ages out before the Leave Time ends and no report messages are received, the port will be removed from the multicast group once its Member Port Aging Time ends. •• The Leave Time mechanism will not take effect when Fast Leave takes effect. A proper leave time value can avoid other hosts connecting to the same port of the switch being mistakenly removed from the multicast group when only some of them want to leave. Enable or disable the MLD Snooping Querier for the VLAN. When enabled, the switch acts as an MLD Snooping Querier for the hosts in this VLAN. A querier periodically sends a general query on the network to solicit membership information, and sends MASQs when it receives done messages from hosts. Note: To enable MLD Snooping Querier for a VLAN, MLD Snooping should be enabled both globally and in the VLAN. With MLD Snooping Querier enabled, specify the interval between general query messages sent by the switch. With MLD Snooping Querier enabled, specify the host's maximum response time to general query messages. With MLD Snooping Querier enabled, when the switch receives a done message, it obtains the address of the multicast group that the host wants to leave from the message. Then the switch sends out MASQs to this multicast group through the port receiving the done message. This parameter determines the interval between MASQs. With MLD Snooping Querier enabled, specify the number of MASQs to be sent. If specified count of MASQs are sent and no report message is received, the switch will delete the multicast address from the multicast forwarding table. With MLD Snooping Querier enabled, specify the source IPv6 address of the general query messages sent by the switch. It should be a unicast address. Select one or more ports to be the static router ports in the VLAN. Static router ports do not age. Multicast streams and MLD packets to all groups in this VLAN will be forwarded through the static router ports. Multicast streams and MLD packets to the groups that have dynamic router ports will be also forwarded through the corresponding dynamic router ports. User Guide 234