Quick Reference Guide

274 | IGMP Snooping Commands
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igmp enable (global)
This command enables IGMP Snooping on the system. The default value is disabled.
Syntax
[oeYua:,duEo rgE
Default
disabled
Mode
Global Config
Command
History
Related
Commands
igmp enable (interface)
This command enables IGMP Snooping on a selected interface, including VLANs and LAGs. If an
interface that has IGMP Snooping enabled is enabled for routing or is enlisted as a member of a port
channel (LAG), IGMP Snooping functionality will be disabled on that interface. IGMP Snooping
functionality will subsequently be re-enabled if routing is disabled or port channel membership is
removed from an interface that has IGMP Snooping enabled.
Syntax
[no] igmp enable
Default
disabled
Mode
Interface Config; Interface Port Channel Config; Interface VLAN Config
Command
History
Related
Commands
Note: The IGMP application supports the following:
• Global configuration or per interface configuration. Per VLAN configuration is unsupported in the
IGMP snooping application.
• Validation of the IP header checksum (as well as the IGMP header checksum) and discarding of the
frame upon checksum error.
• Maintenance of the forwarding table entries based on the MAC address versus the IP address.
• Flooding of unregistered multicast data packets to all ports in the VLAN.
Version 2.3 Changed from set igmp (system)
igmp enable (interface) This command enables IGMP Snooping on a selected interface.
show igmpsnooping Displays IGMP Snooping status.
Version 2.5.1 Added to the new Interface Port Channel Config mode
Version 2.3
Revised from
set igmp. Added to the new Interface VLAN Config mode.
igmp enable (global) This command enables IGMP Snooping on the system.
show igmpsnooping Displays IGMP Snooping status.