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.