H3C S5100-SI

2-5
Enabling IGMP Snooping
Table 2-3 Enable IGMP Snooping
Operation 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 on the
VLAN
igmp-snooping enable
Required
By default, IGMP Snooping is
disabled on all the VLANs.
z Before enabling IGMP Snooping in a VLAN, be sure to enable IGMP Snooping globally in system
view; otherwise the IGMP Snooping settings will not take effect.
z If IGMP Snooping and VLAN VPN are enabled on a VLAN at the same time, IGMP queries are
likely to fail to pass the VLAN. You can solve this problem by configuring VLAN tags for queries.
For details, see
0 Configuring a VLAN Tag for Query Messages.
Configuring the Version of IGMP Snooping
By configuring an IGMP snooping version, you actually configure the version of IGMP messages that
IGMP snooping can process.
z IGMP snooping version 2 can process IGMPv1 and IGMPv2 messages, but not IGMPv3 messages,
which will be flooded in the VLAN.
z IGMP snooping version 3 can process IGMPv1, IGMPv2 and IGMPv3 messages.
Table 2-4 Configure the version of IGMP Snooping
Operation Command Remarks
Enter system view
system-view
—
Enter VLAN view
vlan vlan-id
—
Configure the version of IGMP
Snooping
igmp-snooping version
version-number
Optional
The default IGMP Snooping
version is version 2.