Troubleshooting The Hardware Components - Cisco ME-4924-10GE Hardware Installation Manual

Chapter 4 Troubleshooting
Table 4-1
Symptom
Unreadable characters on the
management console
Amber STATUS LED
The switch port is placed in
error-disabled state after SFP is
inserted
Switch does not recognize the
SFP module

Troubleshooting the Hardware Components

This chapter describes how to troubleshoot the Cisco ME 4924-10GE-10GE switch hardware and
contains these sections:
•
•
•
•
•
If your system has problems starting up, use the information in this chapter to help isolate the cause.
Problems with the initial startup are often caused by poor or improper connections. Although
temperature conditions above the maximum acceptable level rarely occur at initial startup,
environmental monitoring functions are included because they also monitor DC-line voltages.
For configuration questions or problems, refer to the software configuration guide or the command
Note
reference publication to configure or enable the interfaces.
OL-10071-01
Common Problems and Solutions (continued)
Getting Started, page 4-4
Problem Solving to the System Component Level, page 4-4
Identifying Startup Problems, page 4-4
Troubleshooting the Power Supply, page 4-6
Contacting Customer Service, page 4-6
Possible Cause
Incorrect baud rate.
POST error detected. It may or may
not be a fatal error.
Bad or non-Cisco-approved SFP.
The SFP module might be installed
upside down.
The SFP module does not snap into
the port.
Cisco ME 4924-10GE Ethernet Switch Hardware Installation Guide
Troubleshooting the Hardware Components
Resolution
Reset the emulation software to
9600 baud.
Contact Cisco Systems.
Remove the SFP module from
the switch, and replace it with a
Cisco-approved module. Use the
errdisable recovery cause
gbic-invalid global
configuration command to
verify the port status, and enter a
time interval to recover from the
error-disable state.
Refer to the switch command
reference guide for information
on the errdisable recovery
command.
Verify that the SFP module is
not installed upside down.
Remove the SFP module.
Inspect for physical damage to
the connector, the module, and
the port.
Replace the SFP module with a
known good SFP module.
4-3