Dell PowerConnect 8100 CLI Reference Guide - Page 481
IGMP Snooping Querier Commands, Commands in this ip igmp snooping querier
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19 IGMP Snooping Querier Commands The IGMP/MLD Snooping Querier is an extension to the IGMP/MLD Snooping feature. IGMP/MLD Snooping Querier allows the switch to simulate an IGMP/MLD router in a Layer 2-only network, thus removing the need to have an IGMP/MLD Router to collect and refresh the multicast group membership information. The querier function simulates a small subset of the IGMP/MLD router functionality. In a network with IP multicast routing, an IP multicast router acts as the IGMP/MLD querier. However, if it is required that the IP-multicast traffic in a VLAN be switched, the PowerConnect can be configured as an IGMP/MLD querier. When IGMP/MLD Snooping Querier is enabled, the Querier sends out periodic IGMP/MLD General Queries that trigger the multicast listeners/members to send their joins to the querier so as to receive the multicast data traffic. IGMP/MLD snooping listens to these reports to establish the appropriate L2 forwarding table entries. The PowerConnect supports version IGMP V1 and 2 for snooping IGMP queries. Commands in this Chapter This chapter explains the following commands: ip igmp snooping querier ip igmp snooping querier election participate ip igmp snooping querier query-interval ip igmp snooping querier timer expiry ip igmp snooping querier version show ip igmp snooping querier ip igmp snooping querier This command enables or disables IGMP Snooping Querier on the system (Global Configuration mode) or on a VLAN. Using this command, you can specify the IP address that the snooping querier switch should use as the IGMP Snooping Querier Commands 481
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