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15.3 Command For IGMP Snooping
15.3.1 ip igmp snooping vlan
Command:ip igmp snooping vlan <vlan-id>
no ip igmp snooping vlan <vlan-id>
Function:
Enable the IGMP Snooping function for the specified VLAN: the “
no ip igmp
snooping vlan <vlan-id>
“
command disables the IGMP Snooping function for the
specified VLAN.
Parameter: <vlan-id>
is the VLAN number.
Command mode:
Global Mode
Default:
IGMP Snooping is disabled by default.
Usage Guide:
IGMP Snooping for the switch must be enabled first to enable IGMP
Snooping for the specified VLAN. This command cannot be used with
ip igmp snooping
vlan <vlan-id> query
command, i.e. either snooping or query can be enabled for one
VLAN, but not both.
Example:
Enable IGMP Snooping for VLAN 100 in Global Mode.
Switch(C
onfig)#ip igmp snooping vlan 100
15.3.2 ip igmp snooping vlan immediate-leave
Command:ip igmp snooping vlan <vlan-id> immediate-leave
no ip igmp snooping vlan <vlan-id> immediate-leave
Function:
Enable the IGMP fast leave function for the specified VLAN: the “
no ip igmp
snooping vlan <vlan-id> immediate-leave
”
command disables the IGMP fast leave
function.
Parameter: <vlan-id>
is the VLAN number specified.
Command mode:
Global Mode
Default:
This function is disabled by default.
Usage Guide:
Enable IGMP fast leave function speeds up the process for port to leave
multicast group. This command is valid only in Snooping, and is not applicable to Query.
Example:
Enable the IGMP fast leave function for VLAN 100.
Switch(C
onfig)#ip igmp snooping vlan 100 immediate-leave
15.3.3 ip igmp snooping vlan l2-general-querier
Command: ip igmp snooping vlan < vlan-id > l2-general-querier
no ip igmp snooping vlan < vlan-id > l2-general-querier
Function:
Set this vlan to layer 2 general querier