Dell PowerConnect M6220 User's Guide - Page 688
Internet Group Management Protocol, IP Multicast
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Displaying the DVMRP Route Summary using the CLI Command For information about the CLI command that performs this function, see the following chapter in the CLI Reference Guide: • DVMRP Commands Internet Group Management Protocol The Internet Group Management Protocol (IGMP) is used by IPv4 systems (hosts and routers) to report their IP multicast group memberships to any neighboring multicast routers. The PowerConnect M6220/M6348/M8024 performs the multicast router role of the IGMP protocol, which means it collects the membership information needed by the active multicast routing. The currently supported multicast routing protocols in the PowerConnect M6220/M6348/M8024 are DVMRP, PIM-DM, and PIM-SM. The PowerConnect M6220/M6348/M8024 supports IGMP Version 3. Version 3 adds support for source filtering, which is the ability for a system to report interest in receiving packets only from specific source addresses, as required to support Source-Specific Multicast [SSM], or from all but specific source addresses, sent to a particular multicast address. Version 3 is designed to be interoperable with Versions 1 and 2. The IGMP menu page contains links to web pages that define and display IGMP parameters and data. To display this page, click IP Multicast > IGMP in the tree view. Following are the web pages accessible from this menu page: • IGMP Global Configuration • Routing Interface • Proxy Interface 686 Configuring IP Multicast