Reference Guide

Service Provider Bridging | 819
Create Access and Trunk Ports
An access port is a port on the service provider edge that directly connects to the customer. An access port
may 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 is
a 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 from
INTERFACE mode, as shown in Figure 41-2.
Figure 41-2. Displaying the VLAN-Stack Configuration on a Layer 2 Port
Enable VLAN-Stacking for a VLAN
To enable VLAN-Stacking for a VLAN:
Step Task Command Syntax Command Mode
1 Assign the role of access port to a Layer 2 port on a provider
bridge that is connected to a customer.
vlan-stack access INTERFACE
2 Assign the role of trunk port to a Layer 2 port on a provider
bridge that is connected to another provider bridge.
vlan-stack trunk
INTERFACE
3 Assign all access ports and trunk ports to service provider
VLANs.
member INTERFACE VLAN
Task Command Syntax Command Mode
Enable VLAN-Stacking for the VLAN. INTERFACE VLAN vlan-stack compatible
FTOS#show run interface gi 7/0
!
interface GigabitEthernet 7/0
no ip address
switchport
vlan-stack access
no shutdown
FTOS#show run interface gi 7/12
!
interface GigabitEthernet 7/12
no ip address
switchport
vlan-stack trunk
no shutdown