3Com S7906E Command Reference Manual page 231

Default Level
2: System level
Parameters
isolate-user-vlan-id: Isolate-user-VLAN ID, in the range 1 to 4094.
secondary secondary-vlan-id-list: Specifies a list of secondary VLAN IDs. You need to provide the
secondary-vlan-id argument in the form of { secondary-vlan-id1 [ to secondary-vlan-id2 ] }&<1-10>,
where secondary-vlan-id1 and secondary-vlan-id2 are VLAN IDs in the range 1 to 4094 and &<1-10>
means that you can provide up to ten secondary VLAN IDs/secondary VLAN ID ranges.
Description
Use the isolate-user-vlan command to associate an isolate-user-VLAN with the specified secondary
VLAN(s).
Use the undo isolate-user-vlan command to remove the association.
By default, an isolate-user-VLAN is not associated with any secondary VLAN. .
Note that:
To use the isolate-user-vlan command, each of the isolate-user-VLAN and the secondary VLAN(s)
must have at least one port which allows its isolate-user-VLAN or secondary VLAN to pass through.
The default VLAN of the port must be its isolate-user-VLAN or secondary VLAN.
The undo isolate-user-vlan command without the secondary secondary-vlan-id parameter
specified removes the association between the specified isolate-user-VLAN and all its secondary
VLANs, while the undo isolate-user-vlan command with the secondary secondary-vlan-id
parameter specified only removes the association between the specified isolate-user-VLAN and
the specified secondary VLANs.
After associating an isolate-user-VLAN with the specified secondary VLANs, you cannot add/remove a
port to/from each involved VLAN or remove each involved VLAN. To do that, you must cancel the
association first.
Related commands: display isolate-user-vlan.
Examples
# Associate isolate-user-VLAN 2 with the secondary VLANs VLAN 3 and VLAN 4.
<Sysname> system-view
[Sysname] vlan 2
[Sysname-vlan2] isolate-user-vlan enable
[Sysname-vlan2] port GigabitEthernet 2/0/2
[Sysname-vlan2] vlan 3
[Sysname-vlan3] port GigabitEthernet 2/0/3
[Sysname-vlan3] vlan 4
[Sysname-vlan4] port GigabitEthernet 2/0/4
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