Reference Guide

Internet Group Management Protocol (IGMP) | 399

Internet Group Management Protocol (IGMP)

Overview

This chapter contains the following sections:

• IGMP Commands

• IGMP Snooping Commands

The symbols

s z under command headings indicate which Dell Networking platforms — ,

or Z-Series, respectively — support the command..

IGMP Commands

FTOS supports IGMPv1/v2/v3 and is compliant with RFC-3376.

Important Points to Remember

• FTOS supports PIM-SM and PIM-SSM include and exclude modes.

• IGMPv2 is the default version of IGMP on interfaces. IGMPv3 can be configured on interfaces,

and is backward compatible with IGMPv2.

• The maximum number of interfaces supported is 512 on the S-Series 31 interfaces are supported.

• Maximum number of groups supported – no hard limit

• 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.

The commands include:

• clear ip igmp groups

• debug ip igmp

• ip igmp access-group

• ip igmp group-join-limit

• ip igmp immediate-leave

• ip igmp last-member-query-interval

• ip igmp querier-timeout

• ip igmp query-interval

S6000

Note: The Z9000 supports up to 95 interfaces.