CHAPTER 19
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 315
• How to Troubleshoot the Software Configuration, on page 322
• Verifying Troubleshooting of the Software Configuration, on page 335
• Scenarios for Troubleshooting the Software Configuration, on page 339
• Configuration Examples for Troubleshooting Software, on page 341
• Additional References for Troubleshooting Software Configuration, on page 343
• Feature History for Troubleshooting Software Configuration, on page 343
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 322
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.
System Management Configuration Guide, Cisco IOS XE Amsterdam 17.2.x (Catalyst 9500 Switches)
315
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