Quick Reference Guide

150 | VLAN Commands
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Related
Commands
switchport protected (Interface Config)
Use this command to add the selected interface to a protected port group. You can only configure an
interface as protected in one group.
Syntax
[no] switchport protected groupid
Use the no switchport protected command to configure the selected port as unprotected. The
groupid parameter identifies the set of protected ports to which this interface is assigned.
Parameters
Default
unprotected
Mode
Interface Config
Command
History
Related
Commands
VLAN-Stacking Commands
This section provides a detailed explanation of VLAN-Stacking commands, also called Double VLAN
tagging, QinQ, and VLAN tunneling. With this feature, you can “stack” VLANs into one tunnel and
switch them through the network. The commands in this section are:
• dvlan-tunnel l2pdu-forwarding enable
• dvlan-tunnel l2pdu-forwarding mac-address
• dvlan-tunnel ethertype on page 152
• mode dot1q-tunnel on page 152
show switchport protected Displays current memory usage in bytes in tabular format.
switchport protected (Interface Config) Add ports to a protected port group.
Note: Port protection occurs within a single switch. Protected port configuration does not
affect traffic between ports on two different switches. No traffic forwarding is possible
between two protected ports.
groupid
Identifies the set of protected ports to which this interface is assigned.
Range: 0 – 2
Version 2.5.1 Introduced
show switchport protected Displays current memory usage in bytes in tabular format.
switchport protected (Global
Config)
Create a protected port group that includes all ports on the switch.
Note: The VLAN-Stacking feature was not tested in SFTOS 2.5.1 or 2.5.2, so the
commands in this section are not supported, as noted in the Command History of each
command.