Configuration Guide     92
Managing Physical Interfaces Port Isolation Configurations
Step 6 copy running-config startup-config
Save the settings in the configuration file.
The following example shows how to add ports 1/0/1-3 and LAG 4 to the forward list of port 
1/0/5:
Switch#configure
Switch(config)#interface gigabitEthernet 1/0/5
Switch(config-if)#port isolation gi-forward-list 1/0/1-3 po-forward-list 4
Switch(config-if)#show port isolation interface gigabitEthernet 1/0/5
Port           LAG       Forward-List
----             ---          -----------------------
Gi1/0/5    N/A       Gi1/0/1-3,Po4
Switch(config-if)#end
Switch#copy running-config startup-config