Dell C1048P Port Extender Networking Configuration Guide for the C9000 Series - Page 952

To tag frames leaving an interface in Layer 2 mode, assign that interface to a port-based VLAN to tag it with that VLAN ID. To tag interfaces, use the following commands. 1 Access INTERFACE VLAN mode of the VLAN to which you want to assign the interface. CONFIGURATION mode interface vlan vlan-id 2 Enable an interface to include the IEEE 802.1Q tag header. INTERFACE mode tagged interface Add an Interface to Another VLAN To view just the interfaces that are in Layer 2 mode, use the show interfaces switchport command in EXEC Privilege mode or EXEC mode. The following example shows the steps to add a tagged interface (in this case, port channel 1) to VLAN 4. To view the interface's status. Interface (po 1) is tagged and in VLAN 2 and 3, use the show vlan command. In a port-based VLAN, use the tagged command to add the interface to another VLAN. The show vlan command output displays the interface's (po 1) changed status. Except for hybrid ports, only a tagged interface can be a member of multiple VLANs. You can assign hybrid ports to two VLANs if the port is untagged in one VLAN and tagged in all others. Dell#show vlan Codes: * - Default VLAN, G - GVRP VLANs NUM Status Q * 1 Inactive 2 Active T T 3 Active T T Ports Po1(Te 0/0-1) Te 2/0 Po1(Te 0/0-1) Te 2/1 Dell#config Dell(conf)#int vlan 4 Dell(conf-if-vlan)#tagged po 1 Dell(conf-if-vlan)#show conf ! interface Vlan 4 no ip address tagged Port-channel 1 Dell(conf-if-vlan)#end Dell#show vlan Codes: * - Default VLAN, G - GVRP VLANs NUM Status Q * 1 Inactive 2 Active T T 3 Active T T 4 Active T Dell# Ports Po1(Te 0/0-1) Te 3/0 Po1(Te 0/0-1) Te 3/1 Po1(Te 0/0-1) When you remove a tagged interface from a VLAN (using the no tagged interface command), it remains tagged only if it is a tagged interface in another VLAN. If the tagged interface is removed from the only VLAN to which it belongs, the interface is placed in the Default VLAN as an untagged interface. Virtual LANs (VLANs) 952