Chapter 3 Troubleshooting; Diagnosing Problems; Switch Post Results; Switch Leds - Cisco 2960-S Hardware Installation Manual

Troubleshooting
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Diagnosing Problems

The LEDs on the front panel provide troubleshooting information about the switch. They show POST
failures, port-connectivity problems, and overall switch performance. You can also get statistics from the
device manager, from the CLI, or from an SNMP workstation. See the software configuration guide, the
switch command reference guide on Cisco.com, or the documentation that came with your SNMP
application for details.

Switch POST Results

See the
POST failures are usually fatal. Contact your Cisco technical support representative if your switch does
Note
not pass POST.

Switch LEDs

If you have physical access to the switch, look at the port LEDs for troubleshooting information about
the switch. See the
OL-19732-04
Diagnosing Problems, page 3-1
Clearing the Switch IP Address and Configuration, page 3-5
Finding the Switch Serial Number, page 3-5
Replacing a Failed Stack Member, page 3-9
"Verifying Switch Operation" section on page 2-5
"LEDs" section on page 1-11
C H A P T E R
for information on POST.
for a description of the LED colors and their meanings.
Catalyst 2960-S Switch Hardware Installation Guide
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3-1