Reference Guide

Internet Group Management Protocol (IGMP) | 579
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Internet Group Management Protocol
(IGMP)
Overview
The IGMP commands are supported by FTOS on all Dell Force10 platforms, as
indicated by the characters that appear under each of the command headings:
e
E-Series,
c C-Series, s S-Series, , or .
This chapter contains the following sections:
•IGMP Commands
• IGMP Snooping Commands
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 E-Series. On the
C-Series and 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