This document describes the process to collect a good wireless sniffer trace in order to analyze and troubleshoot 802.11 behavior.
Let's look at: 802.11 Beacon Frames.
Analyze and Troubleshoot 802.11 Wireless Sniffing - Cisco
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Analyze and Troubleshoot 802.11 Wireless Sniffing - Cisco
Analyze and Troubleshoot 802.11 Wireless Sniffing - Cisco
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