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Wireless Service Levels

Service-level expectations (SLEs) are interactive charts that show essential criteria representing the wireless clients' experience. SLEs leverage machine learning and the Mist Predictive Analytics and Correlation Engine (PACE) on the Juniper Mist cloud. Using these resources, SLEs turn streaming telemetry from the access points (APs) into visualizations representing end users' network experience in near real time.

Some of the common metrics that SLEs provide are for Wi-Fi coverage, roaming, connection, and AP health. Juniper Mist compares these metrics against your configured acceptance thresholds. If a metric does not meet the threshold, Juniper Mist attributes the failure to one of the classifiers or sub-classifiers. You thereby get a finer indication of where the problem lies.

The following video shows what SLEs are and how you can use them.

In addition to visualizing the network, Marvis® Virtual Network Assistant leverages the analytics from PACE and provides root cause analysis of the problem. Additionally, Marvis provides predictive recommendations to resolve the problem. Both real-time data and PACE analytics are also rolled up into daily and weekly reports which you can use to visualize long-term trends.

You can see both SLEs and reports in the Juniper Mist dashboard by selecting Monitor> Service Levels from the main menu. A summary of each follows.

  • Time to Connect—Shows the percentage of successful connections (initial, roaming, and ongoing) compared to the set threshold.
  • Successful Connects—Shows the percentage of connections (initial, roaming, and ongoing) that completed successfully.
  • Coverage—Shows the percentage of the time that the signal strength received from wireless clients exceeded the set threshold.
  • Roaming—Shows the percentage of successful roams compared to the set threshold.
  • Throughput—Shows the percentage of the time that the throughput available to the wireless clients was greater than the set threshold.
  • Capacity—Shows the percentage of the time that the capacity of the available radio frequency channel exceeded the set threshold.
  • AP Health—Shows the percentage of the time the APs have been operational without losing connectivity to the cloud or rebooting. It also includes the sub-classifiers, Latency, Jitter, and Tunnel.

SLE updates are available every 10 minutes. We recommend, though, a minimum query interval of one hour, and hourly, or longer, polling periods to reduce data fluctuations when viewing the charts.