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Re: Wake-on-LAN

On Sun, Apr 5, 2009 at 4:39 PM, Sharpe, Sam J <sam sharpe+lists redhat gmail com> wrote:
2009/4/5 Timothy Murphy <gayleard eircom net>:
> Thanks for the response.
> Firstly, I have "Wake on LAN" enabled in the BIOS.
> Secondly, rather to my surprise the ethernet light goes off
> when I "Hibernate" (I should confess at this point
> that I am running Centos-5.3 on this machine,
> but thought that I was more likely to get a helpful response
> on the Fedora list!)
> but stays on when I shutdown.
> In neither case does ping or (attempted) ssh have any effect.
> How exactly is one meant to "wake from LAN".

One uses Magic Packets.

To do this, first install a wol client on another machine to broadcast
the wakeup:
# yum -y install wol

Then read about the options:

Then one wakes the target machine...

All my Intel mobos with onboard network can be waked up (no need to install anything, but net-tools):

sudo /sbin/ether-wake ip-addr (wakes computer with ip-addr)

Then, in /etc/ethers, I have the mac addresses associated to IP addresses:
# see man ethers for syntax
# andromeda
XX:XX:XX:XX:XX:XX ip-addr

Never tried with suspend or hibernate. Only when the computer power is off.

Paulo Roma Cavalcanti

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