Igmp-Snooping Fast-Leave - HP A5120 EI Series Command Reference Manual

Description
Use the igmp-snooping enable command to enable IGMP snooping in the current VLAN.
Use the undo igmp-snooping enable command to disable IGMP snooping in the current VLAN.
By default, IGMP snooping is disabled in a VLAN.
You must enable IGMP snooping globally before you enable it in a VLAN.
Related commands: igmp-snooping.
Examples
# Enable IGMP snooping in VLAN 2.
<Sysname> system-view
[Sysname] igmp-snooping
[Sysname-igmp-snooping] quit
[Sysname] vlan 2
[Sysname-vlan2] igmp-snooping enable

igmp-snooping fast-leave

Syntax
igmp-snooping fast-leave [ vlan vlan-list ]
undo igmp-snooping fast-leave [ vlan vlan-list ]
View
Layer 2 Ethernet interface view, Layer 2 aggregate interface view, port group view
Default level
2: System level
Parameters
vlan vlan-list: Specifies one or multiple VLANs. You can provide up to 10 VLAN lists. For each list, you
can specify an individual VLAN in the form of vlan-id, or a VLAN range in the form of start-vlan-id to end-
vlan-id, where the end VLAN ID must be greater than the start VLAN ID. The effective range of a VLAN ID
is 1 to 4094.
Description
Use the igmp-snooping fast-leave command to enable fast-leave processing on the current port or group
of ports. With this function enabled, when the switch receives an IGMP leave message on a port, it
directly removes that port from the multicast forwarding entry of the specific group.
Use the undo igmp-snooping fast-leave command to disable fast-leave processing on the current port or
group of ports.
By default, fast-leave processing is disabled.
This command works only on IGMP snooping–enabled VLANs.
If you do not specify any VLAN when using this command in Layer 2 Ethernet interface view or Layer 2
aggregate interface view, the command takes effect in all VLANs that the interface belongs to. If you
specify a VLAN or multiple VLANs, the command takes effect in the specified VLANs the interface
belongs to.
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