IGMP Snooping Commands
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CLI\files\IGMP_Snooping.fm
D E L L CO N F I D E N T I A L – P R E L I MI N A RY 5/ 1 5 /1 2 - F O R PR O O F O N LY
User Guidelines
Use this command to define the multicast transmissions on a multicast-TV
VLAN. The configuration is only relevant for an Access port that is a member
in the configured VLAN as a multicast-TV VLAN.
If an IGMP message is received on such an Access port, it is associated with
the multicast-TV VLAN only if it is for one of the multicast IP addresses that
are associated with the multicast-TV VLAN.
Up to 256 VLANs can be configured.
ip igmp snooping querier
Use the
ip igmp snooping querier
Global Configuration mode command to
enable the Internet Group Management Protocol (IGMP) querier on a
specific VLAN. Use the
no
form of this command to disable the IGMP
querier on a VLAN interface.
Syntax
ip igmp snooping
vlan vlan-id
querier
no ip igmp snooping
vlan vlan-id
querier
Parameters
vlan-id
—Specifies the VLAN
Default
Disabled
Command Mode
Global Configuration mode
User Guidelines
The IGMP snooping querier can be enabled on a VLAN only if IGMP
snooping is enabled for that VLAN.
No more then one switch can be configured as an IGMP Querier for a VLAN.
When the IGMP snooping querier is enabled, it starts after a host-time-out/2
with no IGMP traffic detected from a multicast router.