3Com Switch 7750 Series
Command Reference Guide – Multicast Chapter 1 IGMP Snooping Configuration Commands
1-13
Caution:
z A multicast VLAN cannot be configured as a multicast sub-VLAN.
z A multicast sub-VLAN cannot be configured as a multicast VLAN.
z A multicast sub-VLAN cannot be configured as the sub-VLAN of other multicast
VLANs.
z One multicast sub-VLAN is corresponding to only one multicast VLAN.
z If multicast routing is enabled on a VLAN interface, the corresponding VLAN cannot
be configured as a multicast VLAN.
Example
# Configure VLAN 2 as a multicast VLAN.
<3Com> system-view
Enter system view, return to user view with Ctrl+Z
[3Com] igmp-snooping enable
[3Com] vlan 2
[3Com-vlan2] multicast-vlan enable
1.1.14 multicast-vlan subvlan Syntax
multicast-vlan vlan-id subvlan vlan-list
undo multicast-vlan vlan-id subvlan vlan-list
View
System view
Parameter
vlan-id: ID of the specified VLAN.
vlan-list: Multiple VLANs in the form of vlan-list = { vlan-id [ to vlan-id ] } & < 1-10 >. The
vlan-id argument is the ID of the VLAN, in the range of 1 to 4,094. &<1-10> means that
you can provide the argument repeatedly for up to ten times.
Description
Use the multicast-vlan subvlan command to configure one or multiple VLANs as the
sub-VLAN(s) of the multicast VLAN.
Use the undo multicast-vlan subvlan command to cancel the sub-VLANs of the
multicast VLAN.