Wake On LAN and WOL Software Tool

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This feature is very similar as WOM (Zero Voltage Wake On Modem), but it goes through local area network. To use Wake On LAN function, you must have a network card with chipset that supports this feature, and connect a cable from LAN card to motherboard WOL connector. The system identification information (probably IP address) is stored on network card and because there is a lot of traffic on the Ethernet. Note that, at least 600mA ATX standby current is required to support the LAN card for this function.

The Magic Packet for Wake Up On the Lan

When the NIC(Network Card) of client receives a BROADCAST frame, as long as the 16 duplications of the IEEE address(MAC address) match the address of the machine to be awakened. If the IEEE address(MAC address) for a particular node on the network was 11h 22h 33h 44h 55h 66h, then the LAN controller would be scanning for the data sequence (assuming an Ethernet Frame):

DESTINATION SOURCE MISC. FF FF FF FF FF FF 11 22 33 44 55 66 11 22 33 44 55 66 11 22 33 44 55 66 11 22 33 44 55 66 11 22 33 44 55 66 11 22 33 44 55 66 11 22 33 44 55 66 11 22 33 44 55 66 11 22 33 44 55 66 11 22 33 44 55 66 11 22 33 44 55 66 11 22 33 44 55 66 11 22 33 44 55 66 11 22 33 44 55 66 11 22 33 44 55 66 11 22 33 44 55 66 MISC. CRC.