C
HAPTER
39
| Multicast Filtering Commands
IGMP Snooping
– 905 –
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
vlan version
Configures the IGMP version for snooping GC
ip igmp snooping
vlan version-exclusive
Discards received IGMP messages which use a version
different to that currently configured
GC
show ip igmp snooping Shows the IGMP snooping, proxy, and query
configuration
PE
show ip igmp snooping
group
Shows known multicast group, source, and host port
mapping
PE
show mac-address-table
multicast
Shows known multicast addresses PE
Table 113: IGMP Snooping Commands (Continued)
Command Function Mode
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