Administrator Guide

Table Of Contents

Internet Group Management Protocol

(IGMP)

The IGMP commands are supported by the Dell Networking operating software on the Z9000 platform.

This chapter contains the following sections:

• 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-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 Z9000 supports up to 95 interfaces.

• 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.

Z9000

Syntax

clear ip igmp groups [group-address | interface]

Parameters

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

decimal format.

interface

Enter the following keywords and slot/port or number

information:

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Internet Group Management Protocol (IGMP)