Reference Guide

1516 | VLAN Stacking
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vlan-stack trunk
c e s
Specify a Layer 2 port or port channel as a trunk port to the Stackable VLAN
network.
Syntax
vlan-stack trunk
To remove a trunk port designation from the selected interface, enter no vlan-stack
trunk
.
Defaults
Not configured.
Command Modes
INTERFACE
Command
History
Usage
Information
Prior to using this command, you must execute the switchport command to place the
interface in Layer 2 mode.
To remove the trunk port designation, the port must first be removed (using the
no
member
interface command) from all Stackable VLAN-enabled VLANs.
Starting with FTOS 7.7.1.0 for E-Series, the VLAN-Stack trunk port can
transparently tunnel, in a service provider environment, customer-originated xSTP
control protocol PDUs. Refer to Chapter 47, Service Provider Bridging.
Starting with FTOS 7.8.1.0 for C-Series and S-Series (FTOS 7.7.1 for E-Series), a
VLAN-Stack trunk port is also allowed to be configured as a tagged port and as an
untagged port for single-tagged VLANs. When the VLAN-Stack trunk port is also a
member of an untagged VLAN, the port should be in hybrid mode. Refer to portmode
hybrid.
In Example 1 below a VLAN-Stack trunk port is configured and then also made part
of a single-tagged VLAN.
Version 8.3.19.0 Introduced on S4820T
Version 8.3.7.0 Introduced on S4810
Version 8.2.1.0 Introduced on the E-Series ExaScale
Version 7.8.1.0 Functionality augmented for C-Series and S-Series to enable multi-purpose use
of the port. Refer to Usage Information, below.
Version 7.7.1.0 Functionality augmented for E-Series to enable multi-purpose use of the port.
Refer to Usage Information, below.
Version 7.6.1.0 Introduced for C-Series and S-Series
E-Series original Command