Troubleshooting the Software Configuration This chapter describes how to identify and resolve software problems related to the Cisco IOS software on the switch. Depending on the nature of the problem, you can use the command-line interface (CLI), Device Manager, or Network Assistant to identify and solve problems. Additional troubleshooting information, such as LED descriptions, is provided in the hardware installation guide.
Information About Troubleshooting the Software Configuration, on page 1 How to Troubleshoot the Software Configuration, on page 10 Verifying Troubleshooting of the Software Configuration, on page 22 Scenarios for Troubleshooting the Software Configuration, on page 25 Configuration Examples for Troubleshooting Software, on page 27 Additional References for Troubleshooting Software Configuration, on page 29 Feature History for Troubleshooting Software Configuration, on page 29 Information About Troubleshooting the Software Configuration Software Failure on a Switch Switch software can be corrupted during an upgrade by downloading the incorrect file to the switch, and by deleting the image file.
In all of these cases, the switch does not pass the power-on self-test (POST), and there is no connectivity. Follow the steps described in the Recovering from a Software Failure, on page 10 section to recover from a software failure. Lost or Forgotten Password on a Device The default configuration for the device allows an end user with physical access to the device to recover from a lost password by interrupting the boot process during power-on and by entering a new password. These recovery procedures require that you have physical access to the device. Troubleshooting the Software Configuration 1