Talk:Wake-on-LAN

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[edit] Origin of WOL

The German Wikipedia states that WoL was published in 1995 by AMD and HP. They link to http://www.amd.com/us-en/assets/content_type/white_papers_and_tech_docs/20213.pdf. Neither Intel nor IBM is mentioned there. If it were Intel/IBM - why should they cooperate? why does AMD have the patent for it? I recommend to check this and link to a source for this claim. Zefiro 21:47, 31 October 2005 (UTC)

Disputed text:

It is an Intel Wired for Management System product.
It was developed as part of the IBM and Intel Advanced Manageability Alliance.
I intend to follow this up sometime in the next few days. (This should not prevent anyone else from doing it first!) --LesleyW 03:36, 24 November 2005 (UTC)
I did a search on patents and trade marks (www.uspto.gov), I could not find any patents but it confirms that IBM holds trademark for "Wake on Lan" which is different from "Magic Packet". This probably means that they also have a patent. If someone knows how to search the patent database it would be useful to provide some information. As far as I know this is a proprietary technology and not a standard. I could not find any standards for it. Therefore I suggest that opening to be changed to reflect this. Mahanchian 15:21, 28 February 2006 (UTC)
Top of page 4 of the AMD white paper reads "However, a method of solving the above problem was presented by IBM engineers...". No mention of Intel though. --64.81.114.101 05:48, 10 June 2006 (UTC)
After a little more searching, found http://www.liebsoft.com/index.cfm/whitepapers/Wake_On_LAN which discusses the IBM / Intel Advanced Manageability Alliance. I think that should be enough to resolve the dispute. If you agree, please archive this thread and remove the tag from the main page. --64.81.114.101 06:10, 10 June 2006 (UTC)

[edit] Linkage

This article links to itself, through the "wake-on-ring" and "wake-on-modem" links which both redirect back to Wake-on-LAN. I have removed the useless links, but I think there might be a case for a separate "wake-on-ring" article as it's not exactly the same thing. Or maybe both could be covered under a more generic title such as Remote Wake-up. --LesleyW 03:36, 24 November 2005 (UTC)

The phrase "Ethernet Packet" is used, I believe the author meant an Ethernet Frame.

[edit] Dedicated header

Do you still need a header to bring a computer using Wake on Lan up? Obviously integrated cards do not have this problem but I've seen discrete PCI cards that do have any headers or leads on them but which claim to do Wake on Lan (and have driver support). Is it possible for arbitrary PCI cards to bring a machine back up if the BIOS is set correctly?

I've just seen this: http://support.intel.com/support/network/sb/cs-008459.htm#2a

The header is only needed for older machines using APM and not ACPI? -- 81.96.206.228 08:17, 17 June 2006 (UTC)

There's another nice WoL writeup on Everything2: http://everything2.com/index.pl?node_id=1675677

No, you need the header, of course. The wake-on-LAN UDP packet itself is a broadcast packet, meaning that the IP address must be the broadcast address for that subnet, or the entire network, depending on what you want to wake up. The destination port will be 9, although I think that you can use 7 as well. I think I'll add this to the article.

[edit] Corrections, expansion and citations

This article was in dire need of some clean-up and corrections which I think my revision helped considerably. However, there are no citations and I think the History section should be expanded. Anyone want to take a crack at it? Phrackattack 21:41, 18 August 2006 (UTC)

I have removed 80.137.255.41's addition which described the Magic Packet as being broadcast or unicast. This is not the case; the magic packet is always transmitted via broadcast. Phrackattack 22:13, 29 August 2006 (UTC)

It cannot use unicast because that would likely require an ARP operation, which would fail due to the unavailability of the target adaptor.

Unless you have a static ARP table entry? Not sure about it, though... 11:06, 2 December 2006 (UTC) Kosma

[edit] Not for wireless ethernet

It should be mentioned that Wake-on-LAN will not work for wireless ethernet (WiFi, 802.11-series standards) because the radio is powered off at these times.

  • Wireless ethernet isn't "LAN". 76.17.188.167 10:38, 19 November 2006 (UTC)
According to my experience and the LAN page, Wi-Fi is an implementation of a "LAN". ~Kruck 23:53, 14 December 2006 (UTC)

[edit] After power loss?

Does WOL still work after a computer has lost power from, say, a power outage? 205.157.110.11 23:07, 20 September 2006 (UTC)

It does not. While the power is off, there would be no source of power to keep the NIC card listening. Phrackattack 20:18, 22 September 2006 (UTC)

  • As long as a fuse or circuit breaker wasn't tripped, so that power would be available to the computer and networking equipment, remote wake-up procedures will work AFTER a power outage. This assumes that the outage is over. Unless the equipment was physically damaged by the power outage, once power is restored, the PSU would still supply power to the motherboard, returning it to a standby state.

[edit] Types of Remote Wake Up (RWU)

Wikipedia has (or should have) a lot of short articles about turning on a computer remotely - I think this is the longest one. I would think the very similar ways to remotely wake a computer should be consolidated into one article. What do you think? These were the similar article topics I was considering:

  • Wake on LAN (WoL)
  • Wake on WAN (WoW)
  • Remote Wake-Up (RWU)
  • Wake-on-Ring (WOR) / Wake-on-Modem (WOM)

~Kruck 23:58, 14 December 2006 (UTC)

[edit] WoL programs section seems a bit spammed

Somebody should check the Wake-on-LAN programs section and remove the spam. Petr Matas 16:51, 22 December 2006 (UTC)

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