Huawei Quidway S8500 Series Command Manual page 504

Command Manual – Multicast Protocol
Quidway S8500 Series Routing Switches
Note:
Fast leaves that are configured in system view and Ethernet port view operate
separately.
Fast leave works on all ports of the specified VLANs if you configure it in system
view. However, it only works on the current port (e.g., a port operates as a trunk of
multiple VLANs) in the specified VLANs if you configure it in Ethernet port view.
Caution:
Fast leave configured for a port takes effect only when the VLAN it belongs to is
IGMP Snooping-enabled.
Fast leave does not work if the corresponding specified VLANs do not exist, the port
does not belongs to any of the specified VLANs, or the VLANs do not have IGMP
Snooping enabled.
A newly configured IGMP Snooping clears all existing fast leave configurations.
The igmp-snooping fast-leave command is useless if you do not enable IGMP
Snooping globally. (You can enable IGMP Snooping globally by executing the
igmp-snooping enable command in system view.)
When you configure IGMP Snooping fast leave on aggregation ports, the
configuration takes effect only on primary aggregation ports.
If you add an IGMP V1 host of the same multicast group to the port, the switch does
not remove the port when the port receives an IGMP Leave packet of the multicast
group even you enable IGMP Snooping fast leave for the port.
Fast leave is disabled by default.
Related command: igmp-snooping.
Example
# Enable IGMP Snooping fast leave on the Ethernet2/1/1 port in VLAN 5 only.
<Quidway> system-view
System View: return to User View with Ctrl+Z.
[Quidway] interface Ethernet2/1/1
[Quidway-Ethernet2/1/1] igmp-snooping fast-leave vlan 5
# Enable IGMP Snooping fast leave on the Ethernet2/1/1 port in VLAN 5, VLAN 7,
VLAN 8, VLAN 30 through VLAN 40, VLAN 50, VLAN 55, VLAN 60, and VLAN 61.
<Quidway> system-view
System View: return to User View with Ctrl+Z.
[Quidway] interface Ethernet2/1/1
Chapter 1 IGMP Snooping Configuration Commands
Huawei Technologies Proprietary
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