224 | VLANsw w w . d e l l . c o m | s u p p o r t . d e l l . c o m The following sequence shows the steps for configuring a protected port group:Figure 14-184 shows using the switchport protected command (Interface Config mode) to designate a portas protected and the show switchport protected command to display the settings.Figure 14-184. Using the switchport protected and show switchport protected CommandsConfiguring a Native VLANSFTOS 2.5.1 introduced support for the native VLAN described in the IEEE 802.1Q specification as theVLAN that handles control traffic. Native VLAN functionality applies to both physical and LAGinterfaces. Configuring a native VLAN is not mandatory; by default, VLAN 1 is the native VLAN.For an example of configuring a native VLAN, see Example of configuring a native VLAN on page 227.Interface Rules:1. An interface can be tagged for zero or more VLANs.2. An interface can be untagged in one and only one VLAN.3. An interface can be tagged and untagged at the same time for different VLANs, but it cannot be taggedand untagged to the same VLAN at the same time.4. Each interface must have a single native VLAN (tagged or untagged) at all times.5. Any port that is only an untagged native should send/receive only untagged frames. By default, allports are in VLAN 1 (the default VLAN) as untagged native.Step Command Syntax Command Mode Usage1 switchport protected groupid[name name]Global Config Create a new (or specify an existing) protected port bygroup number, and then, optionally, assign a name to it.2 interface unit/slot/port Global Config Access the Interface Config mode for a specificinterface.3 switchport protected groupid Interface Config Add the selected interface to the specified protected portgroup.4 show switchport protectedgroupidPrivileged Exec (OPTIONAL) Verify that the desired ports are added tothe protected port group.Force10 (Config)#switchport protected 1 name test_groupForce10 (Config)#interface 1/0/10Force10 (Interface 1/0/1)#switchport protected 1Force10 (Interface 1/0/1)#exitForce10#show switchport protected 1Name.........................................test_groupMember Ports :1/0/10Force10#
