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Mac Forum / General / General / May 2008"Wake On LAN" - Wake from power off or sleep only?
I'm use to sending a Wake ON LAN to a Dell server running Linux. As long as the BIOS configuration is set and the ethtool command is done, the Dell Server will power on once it gets the WOL message. On the Macintoshes, Mac G4 and a Mac Pro, while I have been able to wake them using WOL from an actual sleep state, I can't wake them from power off as done with the Dell sever. Q: Is it possible to turn a Macintosh on from power off via WOL? If so, what needs to be done for this to happen? Q: How do you cause a Macintosh to go to sleep using WOL? Does this require any sort of settings on the Mac in Sharing for example be set? Thanks! Edward > I'm use to sending a Wake ON LAN to a Dell server running Linux. As > long as the BIOS configuration is set and the ethtool command is done, [quoted text clipped - 6 lines] > Q: Is it possible to turn a Macintosh on from power off via WOL? If > so, what needs to be done for this to happen? WOL requires some power to the LAN circuitry for it to detect the WOL message. With the Macs, power off means power off (except for FireWire power on the Mac Pro), so WOL will only work from sleep, not power off. A Mac server may have more options. > Q: How do you cause a Macintosh to go to sleep using WOL? Does this > require any sort of settings on the Mac in Sharing for example be set? WOL only wakes, not sleeps. To put a Mac to sleep remotely, you would have to logon. > > I'm use to sending a Wake ON LAN to a Dell server running Linux. As > > long as the BIOS configuration is set and the ethtool command is done, [quoted text clipped - 17 lines] > WOL only wakes, not sleeps. To put a Mac to sleep remotely, you would > have to logon. Thanks for your helpful posting! Edward On 28/05/2008, eastcoastguyz wrote in message <322dda5f-ecef-402c-9e1f- a42990c04330@y38g2000hsy.googlegroups.com>: > On the Macintoshes, Mac G4 and a Mac Pro, while I have been able to > wake them using WOL from an actual sleep state, I can't wake them from > power off as done with the Dell sever. > > Q: Is it possible to turn a Macintosh on from power off via WOL? If > so, what needs to be done for this to happen? You need to have a server, not a consumer machine. The Xserves behave as you were describing. > Q: How do you cause a Macintosh to go to sleep using WOL? Does this > require any sort of settings on the Mac in Sharing for example be set? Apple have rolled this feature into what they called 'Lights Out Management' (LOM) as described here <http://docs.info.apple.com/article.html?artnum=304870> Basically the computer has a processor (not part of the CPU) and ethernet port dedicated to handing lots of control and monitoring functions which can be handled across the ethernetwork. Not only does this give you startup and shutdown but also monitoring of temperature, disk space, whether someone is trying to open the case, and a bunch of other things. Simon.  Signaturehttp://www.hearsay.demon.co.uk |
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