IPv4 - IGMP

Updated: February 13, 2009

Applies To: Windows 7, Windows Server 2008 R2

Internet Group Management Protocol (IGMP) is a protocol used to manage host membership in Internet Protocol version 4 (IPv4) multicast groups on a network segment. An IPv4 multicast group is a set of hosts that listen for IP traffic destined for a specified IP multicast address. IP multicast traffic is sent to a single MAC address but processed by multiple IP hosts. A host listens on a specified IP multicast address and receives all packets to that IP address.

The information that appears under IGMP in the RRAS MMC snap-in is the list of interfaces that are currently listening for IGMP messages from hosts on the attached subnet.

  • To configure an interface with IGMP to listen for IGMP messages from hosts on the attached subnet, right-click IGMP, and then click New Interface. Select the interface on which you want to listen for IGMP messages, and then click OK.

  • To configure the amount of information logged by IGMP, right-click IGMP, and then click Properties to display the IGMP Properties page.

  • To configure the way IGMP is configured on an interface, click IGMP, right-click the interface that you want to configure, and then click Properties to display the IGMP Interface Properties page.

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