I know Wake-on-LAN standard, but I don't understand the use case for Wake on Pattern Match option in the network card preferences. What are the advantages of it?
1 Answer
“Wake On LAN” makes the system wake on the “magic packet.”
The “Wake on pattern match” option instead checks for packets that matches the operating-system-specified patterns; for example, an ARP request for the computer’s address, or a TCP connection attempt.
The default patterns on a Windows 7 system are:
- Magic Packet.
- NetBIOS Name Query.
- TCPv4 SYN.
- TCPv6 SYN
- IPv6 Neighbor Solicitation.
There’s no ARP in the list since the device is expected to support “ARP Offload”; that is, reply to ARP requests with OS-set address by itself.
6
