How get on a computer from a lan?

  • Thread starter Thread starter Rudy
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Rudy

I have a pc IBM Netvista and I know that it's possible start it from the
lan when connected at lan.
Do you know a program, codes and how do it?
TKS
 
I have a pc IBM Netvista and I know that it's possible start it from the
lan when connected at lan.
Do you know a program, codes and how do it?
TKS
Click to expand...

you need a dhcp server, as well as nfs, i think that's it. should boot
from net fine once you have that.
 
In comp.sys.ibm.pc.hardware.misc Rudy said:
I have a pc IBM Netvista and I know that it's possible start it from the
lan when connected at lan.
Do you know a program, codes and how do it?
Click to expand...

Do you mean "have it boot from LAN" or do you mean "power it
on over the LAN" ?

Arno
 
Arno said:
Do you mean "have it boot from LAN" or do you mean "power it
on over the LAN" ?
Click to expand...

Power on when it's possible because the computer have the WOL enabled.
Even, BOOT, ShutDown or Restart can be another idea.
 
Power on when it's possible because the computer have the WOL enabled.
Even, BOOT, ShutDown or Restart can be another idea.
Click to expand...

For WOL you have to send the right WOL packet to the ethernet card.
Some discussion and links is e.g. here:
http://pages.towson.edu/aczech/magicpkt/

UnderLinux/xxxBSD you can send the packet easily with "nc"
(netcat, http://netcat.sourceforge.net/).

As for booting, normally "bootp" or "dhcp" is used by the card (if it
has network boot capability) to request the boot parameters. I have a
cluster with non-bootable (or broken BIOS) that I boot via "etherboot"
floppy disks. The usual procedure is that the BIOS requests the boot
parameters via bootp/dhcp from any dhcp server. This server then tells
the card its IP adress and the local network parameters. In addition
it tells the card where to get the boot-image via tftp, i.e. an
IP address and a filename. This means in addition to the dhcp/bootp
server you need a tftp server.

As far as I understand "etherboot" (http://etherboot.sourceforge.net/)
uses the general mechanism that is used, not something Linux-specific.
So you can look there for configuration infromation and documantation.

Here is a part of my dhcp-server configuration file:

host n02 {
hardware ethernet 00:09:5B:62:18:98;
fixed-address 10.0.0.22;
filename "boot/n02.nb";
server-identifier 10.0.0.1;
server-name "10.0.0.1";
next-server 10.0.0.1;
}


This tells the dhcp server to tell all dhcp/bootp requests from MAC
address 00:09:5B:62:18:98 that its IP address in 10.0.0.22, ant that
it should load system image boot/n02.nb from the tftpserver 10.0.0.1.

As to how make system images, this OS-specific question. The BIOS just
loads the file and starts it.

Arno
 
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