Dell PowerConnect 6248 User's Guide - Page 405
MFDB IGMP Snooping Table
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• Querier Election Participate Mode - Shows whether the mode is enabled or disabled. When this mode is disabled, upon seeing another querier of same version in the VLAN, the Snooping Querier transitions to non-querier state. When this mode is enabled, the Snooping Querier participates in querier election, where in the lowest IP address wins the querier election and operates as the querier in that VLAN. The other querier transitions to non-querier state. • Snooping Querier VLAN Address - Identifies the Snooping Querier address to be used as source address in periodic IGMP queries sent on the VLAN. • Operational State - Displays the operational state of the IGMP Snooping Querier on the specified VLAN. It can be in any of the following states: - Querier - The Snooping switch that is the Querier in the VLAN. The Snooping switch will send out periodic queries with a time interval equal to the configured querier Query Interval. If the Snooping switch sees a better querier in the VLAN, it transitions to non-querier mode. - Non-Querier - The Snooping switch is in Non-Querier mode in the VLAN. If the querier Expiry Interval timer is expires, the Snooping switch will transition into querier mode. - Disabled - The Snooping Querier is not operational on the VLAN. The Snooping Querier transitions to disabled mode when 1) IGMP Snooping is not operational on the VLAN, 2) the querier address is not configured or 3) the network management address is not configured. • Operational Version - Displays the operational IGMP protocol version of the querier. • Last Querier Address - Displays the IP address of the last querier from which a query was snooped on the VLAN. • Last Querier Version - Displays the IGMP protocol version of the last querier from which a query was snooped on the VLAN. • Operational Max Response Time - Displays the maximum response time to be used in the queries that are sent by the Snooping Querier. Viewing VLAN Querier Status with CLI Commands See "Configuring IGMP Snooping Querier Settings with CLI Commands" on page 402. MFDB IGMP Snooping Table Use the MFDB IGMP Snooping Table page to view the MFDB IGMP Snooping Table and Forbidden Ports settings for individual VLANs. To display the MFDB IGMP Snooping Table page, click Switching →Multicast Support →IGMP Snooping →MFDB IGMP Snooping Table in the tree view. Configuring Switching Information 405