93Step Command Remarks2. Enter interface view.• Enter Ethernet interface view:interface interface-typeinterface-number• Enter Layer 2 aggregateinterface view:interfacebridge-aggregationinterface-numberUse either command.• The configuration in Ethernetinterface view applies only to theport.• In Layer 2 aggregate interfaceview, only the Layer 2 aggregateinterface is configured as theuplink port of the specifiedisolation group, and you can stillassign its member ports asisolated ports. However, theseports will be placed in Unselectedstate and cannot receive orforward data packets.3. Configure the port as theuplink port of an isolationgroup.port-isolate uplink-port groupgroup-numberAn isolation group has no uplink portby default.NOTE:• An isolation group can have only one uplink port. The uplink port you configured for an isolation groupcan overwrite the previous one, if any.• If you configure a common port in an isolation group as the common port of another isolation group, theport leaves the previous group and joins the new one.• You cannot configure an isolated port in an isolation group as the uplink port in any isolation group.• You cannot configure the uplink port of an isolation group as an isolated or uplink port in any otherisolation group.• You cannot configure a link aggregation member port as the uplink port of an isolation group neithercan you assign the uplink port of an isolation group to a link aggregation group.Displaying and maintaining isolation groupsTask Command RemarksDisplay the isolation groupinformation.display port-isolate group [ group-number ][ | { begin | exclude | include }regular-expression ]Available in any viewPort isolation configuration exampleNetworking requirementAs shown in Figure 31:• Device is connected to an external networks through GigabitEthernet 3/1/4.• GigabitEthernet 3/1/1, GigabitEthernet 3/1/2, GigabitEthernet 3/1/3 and GigabitEthernet3/1/4 belong to the same VLAN.
