Huawei Quidway S8500 Series Command Manual page 502

Command Manual – Multicast Protocol
Quidway S8500 Series Routing Switches
Parameter
enable: Enables IGMP Snooping.
disable: Disables IGMP Snooping;
Description
Use the igmp-snooping enable command to enable IGMP Snooping.
Use the igmp-snooping disable command to disable IGMP Snooping.
By default, the switch disables IGMP Snooping.
Caution:
When configuring IGMP Snooping, first enable global IGMP Snooping in system
view, and then enable IGMP Snooping in VLAN view. Otherwise the IGMP Snooping
function will not take effect.
If the VLAN VPN is enabled on a port, the IGMP Snooping feature cannot be
enabled on the VLAN for the port or the IGMP feature cannot be enabled on the
corresponding VLAN interface.
If IGMP Snooping feature is enabled on a VLAN, or IGMP is enabled on the VLAN
interface, you cannot add the member port on which VLAN VPN is enabled into the
VLAN.
Isolate-user-VLAN supports the IGMP-Snooping function. After IGMP-Snooping is
enabled under isolate-user-VLAN, all secondary VLANs are IGMP-Snooping
enabled. It makes no sense to enable IGMP-Snooping for a secondary VLAN.
In a secondary VLAN, IGMP packets will be directly converted and processed in
isolate-user-VLAN, namely all the multicast services are implemented within
isolate-user-VLAN.
Ports in secondary VLANs cannot be used as source addresses of multicast.
Example
# Enable IGMP Snooping in system view.
<Quidway> system-view
System View: return to User View with Ctrl+Z.
[Quidway] igmp-snooping enable
# Enable IGMP Snooping on VLAN 10
<Quidway> system-view
System View: return to User View with Ctrl+Z.
[Quidway] vlan 10
Chapter 1 IGMP Snooping Configuration Commands
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