This method focuses on the analyzing the impact of roaming delay to the application(s) running on the client device. Between 802.11 Encrypted Data Packets to/from the client on the old and new AP.The following are common methods used to calculate the duration required for a client to roam from one AP to another AP: Different methods of measurement may be applicable in different scenarios, but what is important is to maintain consistency in approach in order to establish a baseline in performance and be able to accurately compare results to one another. Variations exist because organizations, wireless professionals, and software tools have different views on what constitutes a completed roam (from beginning to end). There are several different methods by which we can actually measure the roaming event. Part 6 - Tips for Roaming Performance Improvement (coming).Part 5 - Analysis with Wildpackets Omnipeek (coming). Part 4 - Analysis with Wireshark and AirPcap.Part 3 - Methods of Measuring Roam Times.Part 2 - The Many Variations of Wi-Fi Roaming.Part 1 - Connection Control and Importance of Roaming Analysis.This will enable us to accurately compare roaming performance between different types of clients as well as across firmware, driver, and configuration updates on the same client or WLAN infrastructure. However, it is important to establish the methodology we will use to provide consistent, repeatable, and comparable results. Then in part 2, I dived into the many variations of Wi-Fi roaming and how they each work. Now that we know the background on how Wi-Fi roaming occurs in multiple different scenarios, it's almost time to dig in and get our hands dirty by actually capturing packets and measuring client roaming performance.īut before we an do so, we have one more topic to cover, namely - how to actually measure the roam. This may seem trivial, and really it isn't that difficult of a subject. In part 1, I covered how connection control occurs in Wi-Fi, the importance of roaming, and what conditions are involved in triggering a client roam. This article picks up where we last left off in our discussion on Wi-Fi roaming.
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