Chapter 16. Troubleshooting

This chapter covers the following key topics:

• Troubleshooting Philosophies Describes philosophical approaches and practices to problem solving in a network. Lists probable areas where switched network problems can occur. Also covers using the OSI network model to organize troubleshooting thoughts.

• Catalyst Troubleshooting Tools Describes various show commands and other facilities that provide further insight into network operations.

• Logging Discusses how to use and configure Catalyst features to log significant events with your equipment.

Throughout this book, you have seen suggestions on troubleshooting specific areas relevant to the chapter topic. This chapter differs in that it focuses on high level, structured troubleshooting techniques in the LAN switched environment and describes a number of resources and tools available to facilitate troubleshooting.