Chapter 5 Troubleshooting; Diagnosing Problems; Switch Post Results - Cisco Catalyst 3650 Series Hardware Installation Manual

Troubleshooting
This chapter includes the following topics:
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Diagnosing Problems

The switch LEDs provide troubleshooting information about the switch. They show power-on self-test
(POST) failures, port-connectivity problems, and overall switch performance. You can also get statistics
from the CLI, or a Simple Network Management Protocol (SNMP) workstation. For details, refer to one
of the following guides:
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Switch POST Results

Approximately 30 seconds after the switch powers on, it begins the POST, which can take up to 5
minutes to complete. During POST, the SYSTEM LED blinks green. After POST is complete, the
SYSTEM LED turns solid green. The ACTV LED is green if the switch is acting as the active switch.
POST failures are usually fatal. Contact your Cisco technical support representative if your switch does
Caution
not pass POST.
OL-29734-01
Diagnosing Problems, page 5-1
Resetting the Switch, page 5-5
Finding the Switch's Serial Number, page 5-6
Replacing a Failed Data Stack Member, page 5-6
Cisco Catalyst 3650 Series Switches Software Configuration Guides at
http://www.cisco.com/c/en/us/support/switches/catalyst-3650-series-switches/products-installation
-and-configuration-guides-list.html
Cisco Catalyst 3650 Series Switches Command Reference Guides at
http://www.cisco.com/c/en/us/support/switches/catalyst-3650-series-switches/products-command-
reference-list.html
The documentation that came with your SNMP application
C H A P T E R
Catalyst 3650 Switch Hardware Installation Guide
5
5-1