Enabling Igmp Snooping; Configuring The Version Of Igmp Snooping - 3Com 4200G 12-Port Configuration Manual

1.1.1

Enabling IGMP Snooping

Table 2-3 Enable IGMP Snooping
Operation
Enter system view
Enable IGMP Snooping
globally
Enter VLAN view
Enable IGMP Snooping on the
VLAN
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.
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 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
Enter system view
Enter VLAN view
Configure the version of IGMP
Snooping
system-view
igmp-snooping enable
vlan vlan-id
igmp-snooping enable
0 Configuring a VLAN Tag for Query
system-view
vlan vlan-id
igmp-snooping version
version-number
Command
Messages.
Command
2-5
Remarks
—
Required
By default, IGMP Snooping is
disabled globally.
—
Required
By default, IGMP Snooping is
disabled on all the VLANs.
Remarks
—
—
Optional
The default IGMP Snooping
version is version 2.