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CCIE Wireless Exam (350-050) Quick Reference by Erik Vangrunderbeek, Fabian Riesen, Federico Lovison, Federico Ziliotto, Roger Nobel

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Appendix A. RF Troubleshooting

This appendix covers important topics that will help you understand your wireless network better, covering the most important tools you can use for troubleshooting purposes.

Understand Wireless Sniffer Traces

There are a variety of wireless LAN (WLAN) sniffer products available with different capabilities. For example, a lightweight access point (LAP) that operates in Sniffer mode functions as a sniffer and captures and forwards all the packets on a particular channel to a remote machine that runs Airopeek. Some products enable you to capture data on several channels in parallel and display it synchronized within the same trace that simplifies analyzing traces if an STA roams between APs.

A couple of normal LAN ...

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