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(SLES8) for the Itanium Processor Family (powered by Unitedlinux 1.0) or Red Hat
Advanced Server 2.1 for IPF, you can use the ethtool command to enable the Wake
on LAN function. Complete the following steps:
1. Type the following command to determine whether the Wake on LAN function is
2. Type the following command to enable the Magic Packet frame:
Improper server shutdown disables the Wake on LAN function
Description: If a server is not properly shut down, the server cannot restart using
the Wake on LAN feature. An improper shutdown occurs when you turn off the
server power by pressing and holding the power button on the server front panel
while the operating system is running or while the Extensible Firmware Interface
(EFI) is loading.
Solution: There are two ways to re-enable the Wake on LAN feature:
v Turn off the ac power; then, turn on the ac power.
v Perform a proper server shutdown; then, press the power button on the server
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xSeries 455 FAQ: Hints and Tips
enabled for a specific Ethernet interface:
# ethtool ethx
where x is the Ethernet interface number.
If the ethtool command returns a No data available message, the Ethernet
device driver does not support the ethtool software interface. If the Ethernet
device driver supports the ethtool software interface, data regarding various
Ethernet adapter settings is displayed.
The Supports Wake-on entry indicates whether the Ethernet controller supports
the Wake on LAN function. The Wake-on entry indicates whether the Wake on
LAN function is enabled or disabled. A d indicates that the Wake on LAN
function is disabled. A g indicates that the Magic Packet frame is enabled.
# ethtool -s ethX wol g
The Wake on LAN function is enabled for the Ethernet adapter that is
associated with ethx.
front panel to turn on the server.
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