C H A P T E; Troubleshooting The Software Configuration; Information About Troubleshooting The Software Configuration; Software Failure On A Switch - Cisco Catalyst 9500 Manual

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.
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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
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.
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
System Management Configuration Guide, Cisco IOS XE Amsterdam 17.2.x (Catalyst 9500 Switches)
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C H A P T E R
Recovering from a Software Failure, on page 322
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