WiFi Diagnostics

Usually use Wireshark to capture network data.

https://www.wireshark.org/download.html

if you hold down the option key while selecting the wifi icon, you'll be greeted with a more extensive wifi menu; which features three diagnostic routes: 

-Enable Wifi Logging

-Create Diagnostic Report

-Wireless Diagnostic Reports

These three options more then likely contain the info the team is looking for.

Hope that helps

Regarding Wireshark, we do have that, but want something the user can kickoff via self-service without having to configure and set it up. As mentioned above our users don't have admin rights on their devices to run the options above and I was trying to create a self-service item that will enable Wi-Fi logging. The thought was, assign the policy to the user have them enable it, when they get the disconnect it should capture the log, have them run the disable Wi-Fi logging and then provide the log.

I have a script on Self Service that exports WiFi logs to /Users/Shared

#!/bin/sh
/usr/bin/log show --style syslog --predicate 'processImagePath contains "eapolclient" and subsystem contains "com.apple.eapol" or processImagePath contains "SecurityAgent" and subsystem contains "com.apple.SecurityAgent"' --last 3d > "/Users/Shared/eapolclient.log"
/usr/bin/open '/Users/Shared/eapolclient.log'
exit 0