Administrator Guide

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Internet Group Management Protocol (IGMP)

The IGMP commands are supported on the Dell EMC Networking OS.

Topics:

• IGMP Commands

• IGMP Snooping Commands

IGMP Commands

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

Important Points to Remember

• Dell EMC Networking OS supports protocol-independent multicast-sparse (PIM-SM) and protocol-independent source-specific

multicast (PIM-SSM) include and exclude modes.

• IGMPv2 is the default version of IGMP on interfaces. You can configure 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 configure this

setting on that VRF.

NOTE: Applies to specific VRF if input is provided, else applies to default

VRF.

group-address

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

interface

Enter the following keywords and the interface information:

• For a 1-GigabitEthernet interface, enter the keyword GigabitEthernet then the

slot/port information.

• For a 10-Gigabit Ethernet interface, enter the keyword TenGigabitEthernet then

the slot/port information.

•

For a port channel interface, enter the keywords port-channel then a number.

• For a VLAN interface, enter the keyword vlan then a number from 1 to 4094.

Command Modes EXEC

Command History

This guide is platform-specific. For command information about other platforms, see the relevant Dell EMC

Networking OS Command Line Reference Guide.

568 Internet Group Management Protocol (IGMP)