DELL 8132 ユーザーズマニュアル
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IGMP Snooping Querier Commands
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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
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
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
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
2CSPC4.X8100-SWUM102.book Page 481 Friday, March 15, 2013 8:56 AM