Remote Power-On (Rpo); Magic Packet - HP Vectra VA6 Technical Reference Manual

4 Summary of the HP/Phoenix BIOS

Remote Power-On (RPO)

Remote Power-On (RPO)
All models of the HP Vectra XA 6/xxx PC are supplied with a tailor-made
Enhanced Ethernet 10 BaseT network board fitted in a dedicated PCI bus
slot.
Besides the standard suite of network-ready features, the HP Vectra XA
6/xxx PC includes all the hardware and firmware modifications necessary to
implement remote wake-up from any state. These include special BIOS,
Magic Packet capability, and a separate miniature power supply to keep the
start-up hardware active when the machine is Off.
Remote power-on (RPO) is a way to turn on the PC from a communication
channel, such as a Network or Modem, using facilities that have been
incorporated in the Little Ben chip and the ExtStart connector. It allows
system administrators, and authorized users, switch on the PC from
anywhere over an Ethernet network, perform remote administration or
other tasks, and return it to Off or Suspend mode afterwards.

Magic Packet

Magic packet is a standard for remote wake-up developed by HP and
Advanced Micro Devices (AMD). It defines a standard signal for awakening a
dormant computer. The standard defines a Magic Packet frame as the PC's
unique Ethernet Media Access Control (MAC) address (which it has stored
in an EEPROM on the network board), repeated 16 times and encoded in a
valid network packet.
Any Magic Packet-compatible management application (such as HP
OpenView Workgroup Node Manager) can send a Magic Packet frame. An
administrator can do this manually, or can incorporate it into a management
script.
The packet travels over any type of Ethernet LAN to the target HP Vectra
XA 6/xxx PC.
The only component not completely off in the PC is the network chip, which
rests in a special low power mode. Power is supplied by a line called
VStandby (VSTD), on the ExtStart connector (whose pin layout is shown in
the table on page 43), as long as the power cord is plugged in. The
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