HTTP traffic comes in bursts as pages are loaded. Voice is periodic while video starts with a surge and then a constant rate. The idea of mixing different traffic types is that pattern of packet arrivals is different. This may include a mix of TCP and UDP data, streaming video or audio, voice calls, and a mix of mission-critical and recreational apps. To mimic real-world scenarios, a variety of traffic types coming from multiple devices must be used. Spirent TestCenter emulates multiple clients and also generates different types of traffic for testing. What traffic models should I use for Wi-Fi performance testing?.Some performance problems could be due to misconfiguration such as access point connected to the wrong switchport, poor quality cables, wrong channel assignments, or bandwidth limits unknowingly imposed. With modern Wi-Fi networks being controlled from the cloud, it's become possible to adjust a configuration, collect performance data, send it to the cloud and then evaluate if the adjustment had a positive effect. A better approach is to collect data from live networks and analyse this data. In fact, performance testing doesn't help with troubleshooting problems. Wi-Fi environment is too dynamic to reproduce performance issues. Since it's hard to use hundred of real clients, an emulation-based approach can be adopted. It's therefore important to check performance when the network is loaded with multiple busy clients. Usually a single client is used but this is far from real-world scenarios. In a typical deployment, engineers check for signal levels, coverage and throughput to ensure basic performance requirements are met. Some access points are unfair in their resource allocation.

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