Discover the channel the test client is using, and start an over-the-air capture on that channel. Using a Mac laptop to capture frames on a single channel with Airtool, you can still get valuable information about the roaming performance of a Wi-Fi client with a few Wireshark display filters and some I/O Graphs magic. But what if you don’t have that, or want to do something quickly with a Mac without switching to Windows and hooking up your Wi-Fi adapter array? I’m also impressed with 7signal’s recent update to Mobile Eye which now logs roaming data as well. Perhaps the gold standard is to follow the client with a laptop running Omnipeek and several Wi-Fi adapters all capturing frames on different channels. There are many ways to examine the roaming performance of a Wi-Fi client.
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