Date: Fri, 23 Feb 2001 09:29:03 -0500 (EST) From: Andrew Gallatin <gallatin@cs.duke.edu> To: Peter Dufault <dufault@hda.hda.com> Cc: freebsd-hackers@FreeBSD.ORG Subject: Re: Wake on Lan Message-ID: <14998.29615.599981.926187@grasshopper.cs.duke.edu> In-Reply-To: <200102231237.f1NCbjK03604@hda.hda.com> References: <14997.52814.482681.843693@grasshopper.cs.duke.edu> <200102231237.f1NCbjK03604@hda.hda.com>
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Peter Dufault writes:
> >
> > Can somebody clue me in on how Wake On Lan is supposed to work?
> > Does it require any support at all from the OS, or is it totally a
> > BIOS thing?
>
> I don't know how "Wake On Lan" is supposed to work, but the "Sony Vaio
> Slimtop" I have comes out of suspend mode when I ping it. I've had
> it idle for half an hour so I don't know of any other events that
> wake it up.
>
> You'd have to be sure nothing was going to talk to it and you'd need
> an ARP entry for once the arp cache timed out to use this in any way.
It sounds like your Sony is doing something rather non-standard, and
which is not what I'm talking about. I'm talking about the AMD "magic
packet" protocol which sends a packet that looks like this (to wake up
a machine with MAC 01:23:45:67:89:ab):
09:25:36.230235 1234567.89:ab:01:23:45:67.89ab > ffffffff.ff:ff:01:23:45:67.89ab: ipx-#89ab 65505
ffff ffff ffff ffff ffff ffff 0123 4567
89ab 0123 4567 89ab 0123 4567 89ab 0123
4567 89ab 0123 4567 89ab 0123 4567 89ab
0123 4567 89ab 0123 4567 89ab 0123 4567
89ab 0123 4567 89ab 0123 4567 89ab 0123
4567
Drew
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