Command Line Reference Guide

Internet Group Management Protocol

(IGMP)

IGMP and IGMP snooping commands are supported by the Dell Networking OS on the switch.

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.

• On the S-Series, the maximum number of interfaces supported 31. On the S-Series, the maximum

number of interfaces supported 31. On the S6000, the maximum number of interfaces supported

31.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.

Z9500

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:

678

Internet Group Management Protocol (IGMP)