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Re: Wake On LAN Functions.
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Re: Wake On LAN Functions.


  • Subject: Re: Wake On LAN Functions.
  • From: Sak Wathanasin <email@hidden>
  • Date: Sat, 8 Oct 2005 00:29:35 +0100

In reply to Justin C. Walker's message of the 7/10/05 at 9:50 am -0700,


The "spec" allows for routing. There are different formats depending on your needs. AIR, the "routable" version is embedded in a UDP packet; the unroutable version is just a (recognizable) bunch of bits in an ethernet frame.

Ah, but where do you send the UDP pkt to? Broadcasts aren't (in general) going to be forwarded by a router, not even across a VPN. If the target had a static IP, it might work, but if it's on DHCP, it won't have an IP while it's asleep. Or if the LAN was connected by a hub, you could try sending it to another IP in the same subnet, but who uses a hub these days? I tried it over the (LAN-LAN) VPN from my house to the office, and it doesn't work.


Anyway, thanks for the pointer; I found Perl and C code at

<http://gsd.di.uminho.pt/jpo/software/wakeonlan/mini-howto/wol-mini-howto-3.html>

Both "wakeonlan" and "wakelan" (see above) worked on both my Linux and OSX boxes, and more importantly, from the Linux box at the remote site, I could wake up the remote Mac and ssh into it.

Thanks again
--
Sak Wathanasin
Network Analysis Limited           http://www.network-analysis.ltd.uk

Phone: (+44) 24 7655 1220 Mobile: (+44) 79 7075 1912 Fax: (+44) 24 7655 1211
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References: 
 >Re: Wake On LAN Functions. (From: Scott Ribe <email@hidden>)
 >Re: Wake On LAN Functions. (From: "Justin C. Walker" <email@hidden>)

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