Wake-on-LAN

A physical Wake-on-LAN connector (white object in foreground) featured on the IBM PCI Token-Ring Adapter 2

Wake-on-LAN (WoL or WOL) is an Ethernet or Token Ring computer networking standard that allows a computer to be turned on or awakened from sleep mode by a network message. It is based upon AMD's Magic Packet Technology, which was co-developed by AMD and Hewlett-Packard, following its proposal as a standard in 1995. The standard saw quick adoption thereafter through IBM, Intel and others.

Equivalent terms include wake on WAN, remote wake-up, power on by LAN, power up by LAN, resume by LAN, resume on LAN and wake up on LAN. If the computer being awakened is communicating via Wi-Fi, a supplementary standard called Wake on Wireless LAN (WoWLAN) must be employed.[1]

The message is usually sent to the target computer by a program executed on a device connected to the same local area network (LAN). It is also possible to initiate the message from another network by using subnet directed broadcasts or a WoL gateway service.

The WoL and WoWLAN standards are often supplemented by vendors to provide protocol-transparent on-demand services, for example in the Apple Bonjour wake-on-demand (Sleep Proxy) feature.[2]

  1. ^ von Nagy, Andrew (8 November 2010). "Wake on Wireless LAN". Revolution Wi-Fi Blog. Retrieved 28 October 2015.
  2. ^ Fleishman, Glenn (28 August 2009). "Wake on Demand lets Snow Leopard sleep with one eye open". Macworld. Archived from the original on 16 September 2009. Retrieved 15 September 2009. How it works, Energy Saver preference pane