3Com WX3000 Series Operation Manual page 136

<device> system-view
System View: return to User View with Ctrl+Z.
[device] interface GigabitEthernet1/0/2
[device-GigabitEthernet1/0/2] port isolate
[device-GigabitEthernet1/0/2] quit
[device] interface GigabitEthernet1/0/3
[device-GigabitEthernet1/0/3] port isolate
[device-GigabitEthernet1/0/3] quit
[device] interface GigabitEthernet1/0/4
[device-GigabitEthernet1/0/4] port isolate
[device-GigabitEthernet1/0/4] quit
[device]
# Display the information about the ports in the isolation group.
[device] display isolate port
Isolated port(s) on UNIT 1:
GigabitEthernet1/0/2, GigabitEthernet1/0/3, GigabitEthernet1/0/4
1-3