C H A P T E R
4-1
Catalyst 3750 Switch Hardware Installation Guide
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4
Troubleshooting
The LEDs on the front panel provide troubleshooting information about the
switch. They show failures in the power-on self-test (POST), port-connectivity
problems, and overall switch performance. For a full description of the switch
LEDs, see the
“LEDs” section on page 2-8
.
You can also get statistics from the browser interface, from the command-line
interface (CLI), or from a Simple Network Management Protocol (SNMP)
workstation. Refer to the
software configuration guide, the switch command
reference guide on Cisco.com, or the documentation that came with your SNMP
application for details.
This chapter describes these topics for troubleshooting problems:
•
Understanding POST Results, page 4-1
•
Clearing the Switch IP Address and Configuration, page 4-2
•
Replacing a Failed Stack Member, page 4-7
Understanding POST Results
As the switch powers on, it begins POST, a series of tests that run automatically
to ensure that the switch functions properly. When the switch begins POST, the
System, the RPS, the Master, the Status, and the Duplex LEDs turn amber for 2
seconds. The Speed and the Stack LEDs turn green for 2 seconds.
