Operation Manual – Multicast
H3C S3100 Series Ethernet Switches Chapter 2 IGMP Snooping Configuration
2-6
Operation Command Remarks
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.
Caution:
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
Configuring a VLAN Tag for Query
Messages
.
2.2.2 Configuring the Version of IGMP Snooping
With the development of multicast technologies, IGMPv3 has found increasingly wide
application. In IGMPv3, a host can not only join a specific multicast group but also
explicitly specify to receive or reject the information from a specific multicast source.
Working with PIM-SSM, IGMPv3 enables hosts to join specific multicast sources and
groups directly, greatly simplifying multicast routing protocols and optimizing the
network topology.
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.
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