Chapter 3 Troubleshooting; Diagnosing Problems; Switch Post Results - Cisco Catalyst 3560-C Hardware Installation Manual

Troubleshooting
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Diagnosing Problems

The switch LEDs 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, the CLI, or 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.
OL-23803-02
Diagnosing Problems, page 3-1
Resetting the Switch, page 3-5
Finding the Switch Serial Number, page 3-5
"Verifying Switch Operation" section on page 2-5
C H A P T E R
for information on POST.
Catalyst 3560-C and 2960-C Switch Hardware Installation Guide
3
3-1