Administrator Guide

Internet Group Management Protocol (IGMP)

The IGMP commands are supported on the Dell Networking OS.

Topics:

• IGMP Commands

• IGMP Snooping Commands

IGMP Commands

Dell Networking OS supports IGMPv1/v2/v3 and is compliant with RFC-3376.

Important Points to Remember

• Dell Networking OS supports protocol-independent multicast-sparse (PIM-SM) and protocol-independent source-specic multicast

(PIM-SSM) include and exclude modes.

• IGMPv2 is the default version of IGMP on interfaces. You can congure IGMPv3 on interfaces. It is backward compatible with IGMPv2.

• The maximum number of interfaces supported 95.

• There is no hard limit on the maximum number of groups supported.

• IGMPv3 router interoperability with IGMPv2 and IGMPv1 routers on the same subnet is not supported.

• An administrative command (ip igmp version) is added to manually set the IGMP version.

• All commands previously used for IGMPv2 are compatible with IGMPv3.

clear ip igmp groups

Clear entries from the group cache table.

Syntax

clear ip igmp [vrf vrf-name] groups [group-address | interface]

Parameters

vrf vrf-name (OPTIONAL) Enter the keyword vrf followed by the name of the VRF to congure this

setting on that VRF.

NOTE: Applies to specic VRF if input is provided, else applies to default

VRF.

group-address (OPTIONAL) Enter the IP multicast group address in dotted decimal format.

interface interface Enter the following keywords and the interface information:

610 Internet Group Management Protocol (IGMP)