Igmp snooping commands – Dell PowerEdge FX2/FX2s User Manual

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Command
Modes

INTERFACE

Command
History

Version 9.4(0.0)

Supported on the FN I/O aggregator. This command is
supported in Programmable-Mux (PMUX) mode only.

ip igmp version

Manually set the version of the router to IGMPv2 or IGMPv3.

Syntax

ip igmp version {2 | 3}

Parameters

2

Enter the number 2 to set the IGMP version number to
IGMPv2.

3

Enter the number 3 to set the IGMP version number to
IGMPv3.

Defaults

2 (that is, IGMPv2)

Command
Modes

INTERFACE

Command
History

Version 9.4(0.0)

Supported on the FN I/O aggregator. This command is
supported in Programmable-Mux (PMUX) mode only.

IGMP Snooping Commands

Dell Networking OS supports IGMP Snooping version 2 and 3 on all Dell Networking systems.

Important Points to Remember for IGMP Snooping

• Dell Networking OS supports version 1, version 2, and version 3 hosts.
• Dell Networking OS IGMP snooping implementation is based on IP multicast address (not based on

Layer 2 multicast mac address) and the IGMP snooping entries are in Layer 3 flow table not in Layer 2

forwarding information base (FIB).

• Dell Networking OS IGMP snooping implementation is based on draft-ietf-magma-snoop-10.
• Dell Networking OS supports IGMP snooping on JUMBO-enabled cards.
• IGMP snooping is not enabled by default on the switch.
• A maximum of 1800 groups and 600 VLAN are supported.
• IGMP snooping is not supported on a default VLAN interface.
• IGMP snooping is not supported over VLAN-Stack-enabled VLAN interfaces (you must disable IGMP

snooping on a VLAN interface before configuring VLAN-Stack-related commands).

ip igmp snooping enable

Enable IGMP snooping on all or a single VLAN. This command is the master on/off switch to enable IGMP
snooping.

Syntax

ip igmp snooping enable
To disable IGMP snooping, use the no ip igmp snooping enable command.

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