CHAPTER
4-1
Cisco Catalyst 4900M Switch Installation Guide
78-18350-02
4
Troubleshooting the Installation
This chapter describes how to troubleshoot the Catalyst 4900M switch hardware installation and
contains these sections:
•Getting Started, page 4-1
•Problem Solving to the System Component Level, page 4-2
•Identifying Startup Problems, page 4-2
•Troubleshooting the Power Supply, page 4-4
•Contacting Customer Service, page 4-4
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.
NoteFor configuration questions or problems, refer to the software configuration guide or the command
reference publication to configure or enable the interfaces.

Getting Started

When the initial system boot is complete, verify the following:
•Power supplies are supplying power to the system.
•The system fan assembly is operating.
•System software boots successfully.
If all of these conditions are met and the hardware installation is complete, refer to the software
configuration guide and the command reference publications to troubleshoot the software. However, if
any of these conditions are not met, use the procedures in this chapter to isolate and, if possible, resolve
the problem.