In order to wake up a computer on the network, a special packet must be issued, the format of the packet is different from the normal packet, but also must use the corresponding dedicated software to be generated. The Magic Packedt software made by AMD is currently prepared to generate a special data package you need to wake up, commonly known as Magic Packet. The data package contains "ff" of 6 bytes of "ff" and continuous repeated 16 MAC addresses. Although the Magic Packet format is just AMD development promotion technology, it is not a world-recognized standard, but it is still supported by many network card manufacturers, so many network cards with network wake-up features are compatible with it. For more information on Magic Packet, you can refer to http://www.amd.com/us-en/connectivitysolutions/technicalResources/0, 50_2334_2481, 00.Html An example of a special data package required to generate network wakeups The code can be found at http://staff.aist.go.jp/dgfedorov/ether-wake.c.
More information can be referred to http://blog.mllm.org/index.php?q=node/59
