Diagnosing Problems - Cisco Catalyst 3750 Hardware Installation Manual

Diagnosing Problems

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. For a full description of the switch
LEDs, see the
You can also get statistics from the browser interface, 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.
You can access the Technical Support Website (http://www.cisco.com/techsupport) for a list of known
hardware problems and extensive troubleshooting documentation including:
•
•
•
•
•
•
•
•
•
Common switch problems fall into these categories:
•
•
•
Table 3-1
Catalyst 3750 Switch Hardware Installation Guide
3-2
"LEDs" section on page
Field notices
Security advisories
Troubleshooting resources
Factory defaults
Password recovery
Recovery from corrupted or missing software
Switch port problems
Network interface cards
Troubleshooting tools
Poor performance
No connectivity
Corrupted software
describes how to detect and resolve these problems.
1-14.
Chapter 3 Troubleshooting
OL-6336-06