Dell PowerConnect M6220 User's Guide - Page 669
Last Member Query Interval, Query Max Response Time
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The MLD Routing Interface Summary page contains the following fields: • Interface - Select the VLAN for which data is to be displayed. Interface Parameters section: • Global Admin Mode - Displays whether MLD has been globally enabled or disabled. • Interface Mode - Displays whether the administrative status of MLD on the selected interface is enabled or disabled. • Operational Mode - Displays the operational state of MLD on the selected interface, regardless of the administrative setting. • Version - Displays the version of MLD configured on the selected interface. • Query Interval - Displays the interval in seconds at which MLD host-query packets are transmitted on the selected interface. • Query Max Response Time - Displays the maximum query response time in milliseconds (ms) advertised in MLDv2 queries from the selected interface. • Robustness - Displays the robustness parameter for the selected interface. This value allows tuning for the expected packet loss on a subnet. If a subnet is expected to be lossy, increase the robustness variable. MLD is robust to (robustness variable - 1) packet losses. • Startup Query Interval - Displays the interval in seconds at which startup queries are sent on the selected interface. • Startup Query Count - Displays the number of queries to be sent upon startup. • Last Member Query Interval - Displays the maximum response time, in milliseconds, inserted into group-specific queries sent in response to leave group messages. This value is also the amount of time between group-specific query messages. This value may be tuned to modify the leave latency of the network. This value may be tuned to modify the leave latency of the network. A reduced value results in reduced time to detect the loss of the last member of a group. NOTE: This value is not used for MLD version 1. • Last Member Query Count - The number of queries to be sent on receiving a leave group report. Interface Statistics section: • Querier Status - Displays whether the selected router interface is currently the MLD querier. If another interface on the network has a lower source IP address, it becomes the querier. • Querier - The address of the MLD querier on the IP subnet to which the selected interface is attached. • Querier Up Time - The time in hours:minutes:seconds since the MLD interface querier was last changed. • Querier Expiry Time - The time in hours:minutes:seconds remaining before the other querier present timer expires. If the local system is the querier, this will be zero. Configuring IP Multicast 667