Troubleshooting; Run A Diagnostic Test; Chapter 5 Troubleshooting - Cisco Catalyst Express 500-24LC User Manual

Run a Diagnostic Test

Run a Diagnostic Test

Note
Tip
User Guide for the Catalyst Express 500 Switches
5-2
When the switch detects a problem, the Alert LED turns amber, and the Status
field lists the detected problem. From the Diagnostics window
can run switch and link diagnostic tests to solve the problems that the switch finds.
The switch diagnostic test detects system and port problems on the switch.
•
For example:
Power-on self-test (POST) error
–
Port-to-Smartports configuration mismatch
–
– Duplex mode mismatch
The link diagnostic test on a specific port detects speed mismatch and
•
cable-related issues on the port or the circuit. For example:
Unconnected cable
–
– Cable too short or too long
– Faulty cable
The link test is run on a port that is not in a link-up state because it can interrupt
traffic between the switch port and its connected device. Run the link test only on
a port that has a suspected problem. Before running the link test, use the Front
Panel view, the Port Status, and the Port Statistics windows to determine the
details of the problem.
Use the diagnostics report with the Alert Log. The log includes the last time at
which the problems were detected by the switch. Solving the problems does not
turn off the Alert LED. You must also click the Clear Log button in the Alert Log.
Chapter 5

Troubleshooting

(Figure 5-1), you
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