Reference Guide

vlan-stack trunk — specifies a Layer 2 port or port channel as a trunk port to the Stackable
VLAN network.
vlan-stack trunk
Specify a Layer 2 port or port channel as a trunk port to the Stackable VLAN network.
S4820T
Syntax
vlan-stack trunk
To remove a trunk port designation from the selected interface, use the no vlan-stack
trunk
command.
Defaults Not configured.
Command Modes INTERFACE
Command History
This guide is platform-specific. For command information about other platforms, refer to the
relevant FTOS Command Line Reference Guide .
The following is a list of the FTOS version history for this command.
Version 8.3.19.0 Introduced on the S4820T.
Version 8.3.11.1 Introduced on the Z9000.
Version 8.3.7.0 Introduced on the S4810.
Version 8.2.1.0 Introduced on the E-Series ExaScale. C-Series and S-Series accept
both bytes of the 2-byte S-Tag TPID.
Version 7.8.1.0 Functionality augmented for C-Series and S-Series to enable multi-
purpose use of the port.
Version 7.7.1.0 Functionality augmented for E-Series to enable multi-purpose use of
the port.
Version 7.6.1.0 Introduced on the C-Series and S-Series.
E-Series original
Command
Usage
Information
Prior to using this command, to place the interface in Layer 2 mode, execute the
switchport command.
To remove the trunk port designation, first remove the port (using the no member
interface command) from all stackable VLAN-enabled VLANs.
Starting with FTOS version 7.8.1.0, 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 must be in Hybrid mode. Refer to
portmode hybrid.
In Example 1, a VLAN-Stack trunk port is configured and then also made part of a single-tagged
VLAN.
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