可以用装置本身来唤醒伊恩·芬奇顿的作品
原标题：Can wake on lan funciton work by the device itself
There s a device with WOL function and it s enabled in Linux. In order to test the functionality of WOL
I can wake it up by another computer (wakeonlan -i device_ip device_mac)
where can I find the log or message about WOL success after this sent command
if I do the command on the device itself when its power state is ON, can I get any successful message?
问题回答
You could use a network analyzer tool like WireShark to see the magic packet sent from another device if that s what you mean.
Wake-on-Lan is "fire and forget" so there is noting to log.
Wikipedia has a pretty good explanation about how WoL works, particularly this seens relevant:
"Since the magic packet is only scanned for the string above, and not actually parsed by a full protocol stack, it could be sent as payload of any network- and transport-layer protocol, although it is typically sent as a UDP datagram to port 0 (reserved port number),[6] 7 (Echo Protocol) or 9 (Discard Protocol),[7] or directly over Ethernet using EtherType 0x0842.[8] A connection-oriented transport-layer protocol like TCP is less suited for this task as it requires establishing an active connection before sending user data."
It really is that simple: a simple "magic" packet containing the MAC address will wake up the computer if it parses by it s interface. IP is irrelevant other than to make the network route the packet to the right recipient, so usually it is just set to the broadcast address.
Less know fact: you can wake up remote computers by forwarding any UDP port (usually port 9) on the remote router to the network broadcast address.
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