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Technical Reference Guide
NOTE: For the WOL and AOL features to function as described in the following
paragraphs, the system unit must be plugged into a live AC outlet. Controlling unit
power through a switchable power strip will, with the strip turned off, disable WOL and
AOL functionality.
5.9.1 WAKE ON LAN SUPPORT
The NIC supports the Wired-for-Management (WfM) standard of Wake-On-LAN (WOL) that
allows the system to be booted up from a powered-down or low-power condition upon the
detection of special packets received over a network. The NIC receives 3.3 VDC auxiliary power
while the system unit is powered down in order to process special packets. The detection of a
Magic Packet by the NIC results in the PME- signal on the PCI bus to be asserted, initiating
system wake-up from an ACPI S1 or S3 state.
5.9.2 ALERT ON LAN SUPPORT
Alert-On-LAN (AOL) support allows the NIC to communicate the occurrence of certain events
over a network even while the system unit is powered off. In a system-off (powered down)
condition the network function of the 82801 ICH2 component receives auxiliary +3.3 VDC power
(derived from the +5 VDC auxiliary power from the power supply assembly). Certain events
(listed in Table 5-24) will result in the network function of the ICH2 to transmit an appropriate
pre-constructed message over the network to a system management console.
Reportable AOL events are listed in the following table:
Table 5–24. AOL Events
Table 5-24.
AOL Events
Event
Description
BIOS Failure System fails to boot successfully.
OS Problem System fails to load operating system after POST.
Missing/Faulty Processor Processor fails to fetch first instruction.
Thermal Condition Thermal ASIC reports high temperature.
Heartbeat Indication of system’s network presence (sent approximately every 30
seconds in normal operation).
The AOL implementation requirements are as follows:
1. Intel PRO/100 VM Network Connection drivers 3.80 or later (available from Compaq).
2. Intel Alert-On-LAN Utilities, version 2.5 (available from Compaq).
3. Management console running one of the following:
a. HP OpenView Network Node Manager 6.x
b. Intel LANDesk Client Manager
c. Sample Application Console from the Intel AOL Utilities (item #2 above)
Compaq Evo and Workstation Personal Computers
Featuring the Intel Pentium 4 Processor
Second Edition - January 2003
5-33