Device going to sleep (idle), we get it from tills that are not used all the time and some IoT devices. If the device connected is a Windows device you can set the power savings to not be allowed to slow the network down to save power, the setting should be similar to below
![cmr_0-1584106871595.png cmr_0-1584106871595.png](https://community.meraki.com/t5/image/serverpage/image-id/12202i6E719338E23403EE/image-size/medium?v=v2&px=400)