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Chapter 2
Catalyst 6500 Series Switch and ROM Monitor Commands
set igmp v3-processing
set igmp v3-processing
To explicitly enable or disable IGMP version 3 snooping, use the set igmp v3-processing command.
set igmp v3-processing {enable | disable}
Syntax Description
enable
Enables IGMP version 3 snooping.
disable
Disables IGMP version 3 snooping.
Defaults
By default, IGMP version 3 snooping is disabled.
Command Types
Switch command.
Command Modes
Privileged.
Usage Guidelines
IGMP version 3 is supported only on Supervisor Engine 2. Supervisor Engine 1, Supervisor Engine 1A,
and Supervisor Engine 720 do not support this feature.
If IGMP version 3 processing is disabled, any previous IGMP version 3 snooping entries are cleared.
These IGMP version 3 entries are relearned as IGMP version 2 (GDA-based) entries after the switch
receives an IGMP version 3 report. Any subsequent IGMP version 3 reports for other multicast sources
or groups are also processed as version 2 reports.
Note
Examples
IGMP version 3 processing and the multicast multilayer switching (MMLS) feature cannot be
enabled at the same time. To enable IGMP version 3 processing, you must disable MMLS from the
Multilayer Switch Feature Card (MSFC). If you attempt to enable IGMP version 3 processing when
MMLS is enabled, a warning displays to indicate that IGMP version 3 processing will be enabled
after MMLS is disabled from the MSFC.
This example shows how to enable IGMP version 3 processing:
Console> (enable) set igmp v3-processing enable
IGMP V3 processing enabled
Console> (enable)
This example shows how to disable IGMP version 3 processing:
Console> (enable) set igmp v3-processing disable
IGMP V3 processing disabled
Console> (enable)
Catalyst 6500 Series Switch Command Reference—Release 8.1
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