This process is commonly referred to as Aging. Most managed enterprise switches automatically disable a port if no network traffic has been generated on that port for a period of time, and will remove the MAC address of the device on the port from the switch’s MAC table. This issue is caused by the network switch disabling the port to which the printer is connected because it believes that the printer is no longer connected, due to a lack of traffic on that port. Because of this, the network switch thinks the printer is no longer connected to the network and is unable to route any traffic to it. It is because some infrastructure devices, such as network switches, delete devices from their device tables due to long period of inactivity on the network.
It is actually the network infrastructure that typically causes this issue.
This is usually not the fault of the printer. When you turn the printer off and then back on, it causes the printer to generate network activity again and everything starts printing and working again.
Most of the time, this happens because the printer goes to sleep for long periods of time and it loses network connectivity due to being inactive too long.
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