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Configuring Protected Ports
Protected Port Configuration Guidelines
You can configure protected ports on a physical interface that is configured as an NNI (for example,
Gigabit Ethernet port 1) or an EtherChannel group (for example, port-channel 5). When you enable
protected ports for a port channel, it is enabled for all ports in the port-channel group.
Do not configure a private-VLAN port as a protected port. Do not configure a protected port as a
private-VLAN port. A private-VLAN isolated port does not forward traffic to other isolated ports or
community ports. For more information about private VLANs, see
VLANs."
Configuring a Protected Port
Beginning in privileged EXEC mode, follow these steps to define a port as a protected port:
Command
Step 1
configure terminal
Step 2
interface interface-id
Step 3
switchport protected
Step 4
end
Step 5
show interfaces interface-id switchport
Step 6
copy running-config startup-config
To disable protected port, use the no switchport protected interface configuration command.
This example shows how to configure a port as a protected port:
Switch# configure terminal
Switch(config)# interface gigabitethernet0/1
Switch(config-if)# switchport protected
Switch(config-if)# end
This example shows how to configure a FastEthernet port as a protected port.
Switch# configure terminal
Switch(config)# interface fastethernet 0/1
Switch(config-if)# port-type NNI
Switch(config-if)# no shutdown
Switch(config-if)# switchport protected
Switch(config-if)# end
There can only be four NNIs on the Cisco ME switch at the same time.
Note
Cisco ME 3400 Ethernet Access Switch Software Configuration Guide
21-6
Chapter 21
Purpose
Enter global configuration mode.
Specify the interface to configure, and enter interface
configuration mode. The interface must be an NNI.
By default, UNIs are protected ports.
Note
Configure the interface to be a protected port.
Return to privileged EXEC mode.
Verify your entries.
(Optional) Save your entries in the configuration file.
Configuring Port-Based Traffic Control
Chapter 12, "Configuring Private
78-17058-01
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