Cisco Catalyst 3560, Руководство по установке оборудования

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C H A P T E R
4-1
Catalyst 3560 Switch Hardware Installation Guide
78-16057-01
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 2-7 .
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
• Diagnosing Problems, page 4-3
Understanding POST Results
When the switch powers on, it automatically begins the power-on self test
(POST), a series of tests that verifies that the switch functions properly. When the
switch begins POST, the system LED slowly blinks green. When POST
completes, the system LED blinks amber. If POST fails, the system LED remains
amber. If POST completes successfully, the system LED rapidly blinks green.
Note POST failures are usually fatal. Call Cisco Systems if your switch does not pass
POST.