[lug] wake on lan

[Hugh Brown]

I've been playing with wake-on-lan for Linux and wanted to check that 
what I've discovered is consistent with others' experiences.

I have a dell cluster node and an hp workstation.  If I run ethtool 
eth0, both systems report they are capable of waking from a magic packet 
(Supports Wake-on: g) and both claim that wake-on-lan is disabled 
(Wake-on: d).

If I use shutdown -h now to turn off the dell node, I can use etherwake 
to get it to turn back on.  If I do the same on the hp workstation, it 
will not turn back on.  If I do a reboot instead of a shutdown and then 
use the power button to turn it off, etherwake will wake it up.  On the 
hp, if I use "ethtool -s eth0 wol g" then  I can wake it back up.

So, it seems that whether or not a system will wake up is dependent on 
how the BIOS implements wake-on-lan and implementations vary widely.  Is 
that an accurate representation of the state of things?

Hugh