Configure VLAN Stacking
Configuring VLAN-Stacking is a three-step process.
1. Creating Access and Trunk Ports
2. Assign access and trunk ports to a VLAN (Creating Access and Trunk Ports).
3. Enable VLAN-Stacking for a VLAN.
Related Configuration Tasks
•Configuring the Protocol Type Value for the Outer VLAN Tag
•Configuring Options for Trunk Ports
•Debugging VLAN Stacking
•VLAN Stacking in Multi-Vendor Networks
Creating Access and Trunk Ports
To create access and trunk ports, use the following commands.
•Access port — a port on the service provider edge that directly connects to the customer. An access
port may belong to only one service provider VLAN.
•Trunk port — 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.
1. Assign the role of access port to a Layer 2 port on a provider bridge that is connected to a customer.
INTERFACE mode
vlan-stack access
2. Assign the role of trunk port to a Layer 2 port on a provider bridge that is connected to another
provider bridge.
INTERFACE mode
vlan-stack trunk
3. Assign all access ports and trunk ports to service provider VLANs.
INTERFACE VLAN mode
member
Example of Displaying the VLAN-Stack Configuration for a Switchport
To display the VLAN-Stacking configuration for a switchport, use the show config command from
INTERFACE mode.
Dell#show run interface gi 7/0
!
interface GigabitEthernet 7/0
no ip address
switchport
vlan-stack access
no shutdown
826 Service Provider Bridging