Correlation – Probable Causes

The Probable Causes chart gives a probability score to the source of the issue.  By default, with no information, the probability for all four categories (AP, WLAN, Client, Band) are split evenly at 25% each.  As more data is accumulated, we are able to give a better representation on the probability of failures for each of the four categories.  The purpose of this chart is to determine which category the most likely cause of failure – it is a good indicator when there is a >5% difference between the highest percentage and the rest.

To access the Probable Causes chart, navigate to Analytics > Virtual Assistant and type in your query.  Here, we are troubleshooting a client in the past 7 days.  Select Investigate on the SLE you want to dig into and click on the Correlation to show the Probable Causes chart.

Here we look at the Coverage problem affecting this client.  The Probable Causes chart shows the client itself has a 32% probability score of being the cause of failure, with the next highest being 22% for the 5 GHz radio band and 22% for the Rivendell WLAN.  We can conclude that this is a client-specific issue, with failures occurring on the 5 GHz band and Rivendell WLAN.  This conclusion is outlined in the summary statement under each problem.

Looking at the Time to Connect problem affecting this client, we see that the Rivendell WLAN has a 40% probability score, with the next highest being 16% for the 5 GHz band.  With this information, we can determine that the Rivendell WLAN is causing the Time to Connect issue.  The summary text also provides additional information relating to the problem.  In this case, the primary cause for this issue is identified as a slow response from DHCP server 10.2.1.1.