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watchdog packet

In a NetWare network, an inquiry packet sent by the server to the client if it has not had any requests from the client for some period of time. If there is no response to the watchdog packets, the server clears the connection. See watchdog timer.

watchdog timer

A clock circuit that keeps counting from a set number down to zero. If the event it is monitoring occurs before it reaches zero, it resets to the starting number and starts counting down again. If the timer reaches zero, it performs some action; for example, a diagnostic operation such as rebooting the computer or sending an error message. See watchdog packet.

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