3Com Switch 7750 Configuration Guide

Isolate-User-VLAN Configuration Example 117
Network diagram
Figure 36 Diagram for isolate-user-VLAN configuration
Configuration procedure
■ Configure Switch B
# Configure the isolate-user-VLAN
<SwitchB> system-view
[SwitchB] vlan 5
[SwitchB-vlan5] isolate-user-vlan enable
# Configure the secondary VLAN.
[SwitchB-vlan5] quit
[SwitchB] vlan 3
[SwitchB-vlan3] quit
[SwitchB] vlan 2
# Add port Ethernet2/0/2 to the isolate-user-VLAN and the secondary VLAN, and
configure the port to untag the VLAN packets. Because all ports are added to
VLAN 1 by default, you need to remove the port from VLAN 1 to avoid broadcast.
[SwitchB-vlan2] quit
[SwitchB] interface Ethernet 2/0/2
[SwitchB-Ethernet2/0/2] port link-type hybrid
[SwitchB-Ethernet2/0/2] port hybrid vlan 3 untagged
[SwitchB-Ethernet2/0/2] port hybrid vlan 5 untagged
[SwitchB-Ethernet2/0/2] port hybrid pvid vlan 3
[SwitchB-Ethernet2/0/2] undo port hybrid vlan 1
# Add port Ethernet2/0/5 to the isolate-user-VLAN and the secondary VLAN, and
configure the port to untag the VLAN packets. Remove the port from VLAN 1.
[SwitchB-Ethernet2/0/2] quit
[SwitchB] interface Ethernet 2/0/5
[SwitchB-Ethernet2/0/5] port link-type hybrid
[SwitchB-Ethernet2/0/5] port hybrid vlan 2 untagged
[SwitchB-Ethernet2/0/5] port hybrid vlan 5 untagged
VLAN 2VLAN 3
Eth2/0/2 Eth2 /0/5
Switch B
Et h2/0 /1
Eth2/0/1
VLAN 3 VLAN 4
Eth2/0/3 Eth2/0/4
Switch C
VLAN 5 VLAN 6
Switch A