Quick Reference Guide

224 | VLANs
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The following sequence shows the steps for configuring a protected port group:
Figure 14-184 shows using the
switchport protected command (Interface Config mode) to designate a port
as protected and the
show switchport protected command to display the settings.
Figure 14-184. Using the switchport protected and show switchport protected Commands
Configuring a Native VLAN
SFTOS 2.5.1 introduced support for the native VLAN described in the IEEE 802.1Q specification as the
VLAN that handles control traffic. Native VLAN functionality applies to both physical and LAG
interfaces. Configuring a native VLAN is not mandatory; by default, VLAN 1 is the native VLAN.
For an example of configuring a native VLAN, see Example of configuring a native VLAN on page 227.
Interface Rules:
1. An interface can be tagged for zero or more VLANs.
2. An interface can be untagged in one and only one VLAN.
3. An interface can be tagged and untagged at the same time for different VLANs, but it cannot be tagged
and untagged to the same VLAN at the same time.
4. Each interface must have a single native VLAN (tagged or untagged) at all times.
5. Any port that is only an untagged native should send/receive only untagged frames. By default, all
ports are in VLAN 1 (the default VLAN) as untagged native.
Step Command Syntax Command Mode Usage
1
switchport protected
groupid
[name name]
Global Config Create a new (or specify an existing) protected port by
group number, and then, optionally, assign a name to it.
2 interface unit/slot/port
Global Config Access the Interface Config mode for a specific
interface.
3 switchport protected groupid
Interface Config Add the selected interface to the specified protected port
group.
4
show switchport protected
groupid
Privileged Exec (OPTIONAL) Verify that the desired ports are added to
the protected port group.
Force10 (Config)#switchport protected 1 name test_group
Force10 (Config)#interface 1/0/10
Force10 (Interface 1/0/1)#switchport protected 1
Force10 (Interface 1/0/1)#exit
Force10#show switchport protected 1
Name.........................................test_group
Member Ports :
1/0/10
Force10#