Monitoring And Maintaining The Layer 2 Interface; Monitoring Interface And Controller Status - Cisco WS-C3550-12G Software Configuration Manual

Monitoring and Maintaining the Layer 2 Interface

Command
Step 5 show interfaces interface-id description
or
show running-config
Step 6 copy running-config startup-config
Use the no description interface configuration command to delete the description.
This example shows how to add a description on Fast Ethernet interface 0/4 and to verify the description:
Switch# config terminal
Enter configuration commands, one per line.
Switch(config)# interface fastethernet0/4
Switch(config-if)# description Connects to Marketing
Switch(config-if)# end
Switch# show interfaces fastethernet0/4 description
Interface Status
Fa0/4
Monitoring and Maintaining the Layer 2 Interface
You can perform the tasks in these sections to monitor and maintain the interfaces:
•
•
•

Monitoring Interface and Controller Status

Commands entered at the privileged EXEC prompt display information about the interface, including
the version of the software and the hardware, the controller status, and statistics about the interfaces.
Table 8-2
commands by using the show ? command at the privileged EXEC prompt.) These commands are fully
described in the Cisco IOS Interface Command Reference for Release 12.1.
Table 8-2 Show Commands for Interfaces
Command
show interfaces [interface-id]
show interfaces interface-id status [err-disabled]
show interfaces [interface-id] switchport
show interfaces [interface-id] description
Catalyst 3550 Multilayer Switch Software Configuration Guide
8-18
Protocol Description
up down
Monitoring Interface and Controller Status, page 8-18
Clearing and Resetting Interfaces and Counters, page 8-20
Shutting Down and Restarting the Interface, page 8-21
lists some of these interface monitoring commands. (You can display the full list of show
Purpose
Verify your entry.
(Optional) Save your entries in the configuration file.
End with CNTL/Z.
Connects to Marketing
Purpose
Display the status and configuration of all interfaces or a specific
interface.
Display interface status or a list of interfaces in error-disabled state.
Display administrative and operational status of switching
(nonrouting) ports. You can use this command to determine if a port is
in routing or switching mode.
Display the description configured on an interface or all interfaces and
the interface status.
Chapter 8 Configuring Interface Characteristics
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