Overview

This module will cover the basics of troubleshooting. It begins by examining a methodology that breaks down the process of troubleshooting into manageable steps. This systematic approach can be used to minimize confusion and reduce the time required for trial-and-error troubleshooting. Troubleshooting is a step-by-step process that all networking engineers must perform. This process generally requires either an inductive or deductive reasoning approach.

Next, a variety of tools will be introduced that are used to troubleshoot a WLAN. These tools include cable testers, which are designed to verify connectivity of all LAN cable types, and spectrum analyzers, which are used to determine if there is activity on a frequency. After discussing tools, a brief discussion of system logging and single point of failure troubleshooting will be presented.

Finally, a Cisco proprietary management tool will be explored. This tool is called the Wireless LAN Solution Engine (WLSE), and it is designed for enterprise WLAN management. The WLSE uses a web-based graphical user interface (GUI) for a large number of access points (APs) and bridges for configuration changes, security, accounting, faults, and performance monitoring.