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How Wake On LAN Technology works?

April 26, 2017LAN Technology Wake

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How Wake On LAN Technology works?

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Wake on LAN technology involves a Network Interface Card (NIC)/ Modem that waits for a wake-up trigger from the network. When it receives the trigger it initiates system power up. The trigger to wake-up the target machine can be recognized in multiple ways. Magic Packet Technology Wake on LAN originally used a technology known as Magic Packet, which sends a data packet directly to a system. This packet consists of data that has 16 repetitions of the system’s media access control (MAC) layer address. The MAC address is unique to the network adapter in the system. So the Magic Packet wakes only the system targeted for start-up. When the network adapter receives and decodes this packet, it sends a power management event (PME) signal to the system that brings it back to full power and boots the system. This is BIOS level control.