How to find the MAC address of a 'shutdown' system on local lan (is it possible?)

Once the system is shutdown your best bet to finding the MAC address is looking for stickers somewhere on the case!

Seriously, I guess you are looking for some way to "wake on lan" a computer on a local lan?
I'm not certain that the machine would respond (be supposed to respond) to anything unless you know the mac already and can the correct magic packet.

From the wikipedia article I linked:

How it works

Wake-on-LAN is platform-independent, so any application on any platform that sends magic packets can wake up computers running on any platform. It is not restricted to LAN (Local area network) traffic.

The computer to be woken is shut down (sleeping, hibernating, or soft off; i.e., ACPI state G1 or G2), with power reserved for the network card, but not disconnected from its power source. The network card listens for a specific packet containing its MAC address, called the magic packet, broadcast on the broadcast address for that particular subnet (or an entire LAN, though this requires special hardware or configuration).

thank you lexu..yes, your guess is right..i am making wol..but a bit different from the earlier version..in the earlier versions we have to provide the mac address ...but now i only have the host name or the ip address...and now i want to wake it on lan..for this i want its mac address..andthanks for the wikki stract..but i already gone through it...well thanx for the reply..

2010-03-29 07:41:59

I don't think you can WOL a shutdown machine without 'knowing' something 'privileged' about it. Also this machine needs to be "willing" to be woken. Are those conditions met?

lexu 2010-03-29 07:44:44

yes...To make a machine to be "wiiling" to be woken...we just need to make some changes in bios setting in power tab...these condistions are met...so any valid solution please..

2010-03-29 07:50:26

As I said above: knowing the MAC (or an equivalent somewhat private token) address is a precondition for WOL. You cannot WOL an alien system.

lexu 2010-03-29 07:53:48

No doubt you are right mr.lexu..but i am asking that only...GET THE MAC ADDRESS...please read my query once again...please...

2010-03-29 08:01:43

@pirates-iiita: I thought I had read your question (steps 1-4) and I stand by my statement: The MAC-address must be known **BEFORE SHUTDOWN** or you cannot WOL. There are Answers here on stackoverflow that will show you how to get the MAC of a running system (either locally or using local lan). Somehow we are not communicating. I don't seem to understand your question!!

lexu 2010-03-29 08:09:35

ok...thank you...

2010-03-29 08:15:05

Comments should be made using the "add comment" link. Answers are for *answers*.

T.J. Crowder 2010-03-29 07:35:41

I added your comment to the original question. Plz delete your answer. Thanks

lexu 2010-03-29 07:47:17

ansaurus

tags:

views:

answers:

How to find the MAC address of a 'shutdown' system on local lan (is it possible?)

How it works

related questions