Reference Guide

Enable VLAN-Stacking for a VLAN
To enable VLAN-Stacking for a VLAN, use the following command.
• Enable VLAN-Stacking for the VLAN.
INTERFACE VLAN mode
vlan-stack compatible
To display the status and members of a VLAN, use the show vlan command from EXEC Privilege mode. Members of a
VLAN-Stacking-enabled VLAN are marked with an M in column Q.
Example of Viewing VLAN Stack Member Status
FTOS#show vlan
Codes: * - Default VLAN, G - GVRP VLANs
NUM Status Q Ports
* 1 Active U Gi 13/0-5,18
2 Inactive
3 Inactive
4 Inactive
5 Inactive
6 Active M Po1(Gi 13/14-15)
M Gi 13/13
FTOS#
Configuring the Protocol Type Value for the Outer VLAN Tag
The tag protocol identifier (TPID) field of the S-Tag is user-configurable.
To set the S-Tag TPID, use the following command.
• Select a value for the S-Tag TPID.
CONFIGURATION mode
vlan-stack protocol-type
The default is 9100.
To display the S-Tag TPID for a VLAN, use the show running-config command from EXEC privilege mode. FTOS
displays the S-Tag TPID only if it is a non-default value.
Configuring FTOS Options for Trunk Ports
802.1ad trunk ports may also be tagged members of a VLAN so that it can carry single and double-tagged traffic.
You can enable trunk ports to carry untagged, single-tagged, and double-tagged VLAN traffic by making the trunk port a
hybrid port.
To configure trunk ports, use the following commands.
1. Configure a trunk port to carry untagged, single-tagged, and double-tagged traffic by making it a hybrid port.
INTERFACE mode
portmode hybrid
NOTE: You can add a trunk port to an 802.1Q VLAN as well as a Stacking VLAN only when the TPID 0x8100.
2. Add the port to a 802.1Q VLAN as tagged or untagged.
INTERFACE VLAN mode
718