Cisco Catalyst 2950 Software Configuration Manual page 224

Monitoring and Maintaining the Interfaces
Beginning in privileged EXEC mode, follow these steps to shut down an interface:
Command
Step 1 configure terminal
Step 2 interface {vlan vlan-id} | {{fastethernet | gigabitethernet}
interface-id} | {port-channel port-channel-number}
Step 3
shutdown
Step 4 end
Step 5 show running-config
Use the no shutdown interface configuration command to restart the interface.
When the shutdown interface configuration command is entered on an LRE interface, the LRE link is
shut down. To shut down the 10/100 Ethernet ports on CPE device, use the cpe shutdown [port port-id]
interface configuration command.
This example shows how to shut down a port:
Switch# configure terminal
Switch(config)# interface fastethernet0/5
Switch(config-if)# shutdown
Switch(config-if)#
*Sep 30 08:33:47: %LINK-5-CHANGED: Interface FastEthernet0/5, changed state to a
administratively down
This example shows how to re-enable a port:
Switch# configure terminal
Switch(config)# interface fastethernet0/5
Switch(config-if)# no shutdown
Switch(config-if)#
*Sep 30 08:36:00: %LINK-3-UPDOWN: Interface FastEthernet0/5, changed state to up
To verify that an interface is disabled, enter the show interfaces privileged EXEC command. A disabled
interface appears as administratively down in the show interfaces command output.
Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide
10-18
Chapter 10 Configuring Interface Characteristics
Purpose
Enter global configuration mode.
Select the interface to be configured.
Shut down an interface.
Return to privileged EXEC mode.
Verify your entry.
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