H3C S7500 Series Ethernet Switches Operation Manual

Operation Manual – Multicast
H3C S7500 Series Ethernet Switches Chapter 3
IGMP Snooping Configuration
3-6
Caution:
An IGMP Snooping-enabled S7500 Ethernet switch judges whether the multicast group
exists when it receives an IGMP leave message sent by a host in a multicast group. If
this multicast group does not exist, the switch will drop the IGMP leave message
instead of forwarding it.
3.2 IGMP Snooping Configuration
Complete the following tasks to configure IGMP Snooping:
Task Remarks
Enabling IGMP Snooping Required
Configuring Timers Optional
Enabling IGMP Fast Leave Optional
Configuring IGMP Snooping Filtering ACLs Optional
Configuring to Limit the Number of Multicast Groups on a Port Optional
Configuring Suppression on IGMP Report Messages Optional
Configuring Multicast VLAN Optional
3.2.1 Enabling IGMP Snooping
You can use the command here to enable IGMP Snooping so that it can establish and
maintain forwarding tables for MAC multicast groups at layer 2.
Follow these steps to enable IGMP Snooping:
To do... Use the command... Remarks
Enter system view system-view —
Enable IGMP Snooping
globally
igmp-snooping enable
Required
By default, IGMP Snooping is
disabled globally.
Enter VLAN view
vlan vlan-id
—
Enable IGMP Snooping
in the VLAN
igmp-snooping enable
Required
By default, IGMP Snooping is
disabled in the VLAN.