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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.
A real time clock alarm is a feature that can be used to allow a computer to 'wake up' after shut down to execute tasks every day or on a certain day. It can sometimes be found in the 'Power Management' section of a motherboard's BIOS/UEFI setup. Wake On LAN, Wake on ring, and IPMI functions could also be used to start a computer after it is ...
The method by which a sleep proxy server wakes a sleeping host is wake-on-LAN. The network interface of a sleeping host with this capability will wake the machine when it receives a specific series of bits, and a packet containing this pattern is a magic packet. Early implementations of Wake on LAN (WoL) required
Alert on LAN (AOL, sometimes AoL) is a 1998, IBM- and Intel-developed technology that allows for remote management and control of networked PCs. AOL requires a Wake on LAN adapter. Technical details
Wake-on-Ring (WOR) or Wake-on-Modem (WOM) is a specification that allows supported computers and devices to "wake up" or turn on from a sleeping, hibernating or "soft off" state (e.g. ACPI state G1 or G2), and begin operation.
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Linux hosts send the first TCP Keepalive packet after 2 hours (default since Linux 2.2), then send 9 Keepalive probes (default since Linux 2.2) at 75 seconds (default since Linux 2.4) intervals, dropping the connection if there is no response to any of the Keepalive packets.
The payload may also include a magic packet for the Wake-on-LAN protocol, but the minimum payload, in that case, is longer than shown. The Echo Request typically does not receive any reply if the host was sleeping in hibernation state, but the host still wakes up from sleep state if its interface is configured to accept wakeup requests.