Service Provider Bridging | 821Create Access and Trunk PortsAn access port is a port on the service provider edge that directly connects to the customer. An access portmay belong to only one service provider VLAN.A trunk port is a port on a service provider bridge that connects to another service provider bridge and isa member of multiple service provider VLANs.Physical ports and port-channels can be access or trunk ports.To create access and trunk ports:Display the VLAN-Stacking configuration for a switchport using the command show config fromINTERFACE mode, as shown in Figure 40-2.Figure 40-2. Displaying the VLAN-Stack Configuration on a Layer 2 PortEnable VLAN-Stacking for a VLANTo enable VLAN-Stacking for a VLAN:Step Task Command Syntax Command Mode1 Assign the role of access port to a Layer 2 port on a providerbridge that is connected to a customer.vlan-stack access INTERFACE2 Assign the role of trunk port to a Layer 2 port on a providerbridge that is connected to another provider bridge.vlan-stack trunk INTERFACE3 Assign all access ports and trunk ports to service providerVLANs.member INTERFACE VLANTask Command Syntax Command ModeEnable VLAN-Stacking for the VLAN. INTERFACE VLAN vlan-stack compatibleFTOS#show run interface gi 7/0!interface GigabitEthernet 7/0no ip addressswitchportvlan-stack accessno shutdownFTOS#show run interface gi 7/12!interface GigabitEthernet 7/12no ip addressswitchportvlan-stack trunkno shutdown
