C
HAPTER
38
| Multicast Filtering Commands
IGMP Snooping
– 897 –
ip igmp snooping This command enables IGMP snooping globally on the switch or on a
selected VLAN interface. Use the no form to disable it.
SYNTAX
[no] ip igmp snooping [vlan vlan-id]
vlan-id - VLAN ID (Range: 1-4093)
DEFAULT SETTING
Enabled
COMMAND MODE
Global Configuration
COMMAND USAGE
â—† When IGMP snooping is enabled globally, the per VLAN interface
settings for IGMP snooping take precedence.
â—† When IGMP snooping is disabled globally, snooping can still be
configured per VLAN interface, but the interface settings will not take
effect until snooping is re-enabled globally.
EXAMPLE
The following example enables IGMP snooping globally.
Console(config)#ip igmp snooping
Console(config)#
ip igmp snooping
priority
This command assigns a priority to all multicast traffic. Use the no form to
restore the default setting.
SYNTAX
ip igmp snooping priority priority
no ip igmp snooping priority
priority - The CoS priority assigned to all multicast traffic.
(Range: 0-6, where 6 is the highest priority)
DEFAULT SETTING
2
COMMAND MODE
Global Configuration
COMMAND USAGE
This command can be used to set a high priority for low-latency multicast
traffic such as a video-conference, or to set a low priority for normal
multicast traffic not sensitive to latency.
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