If you know device IP address how to know mac

August 9, 2010 at 05:13:10
Specs: N/A
First of all we are speaking local area. I have Linksys adsl modem/router that i use. It is set in nat mode. So it will give some ip from this range - 192.168.150.

Actual problem.
I know that device A ip address and device B, but in linksys adsl modem there is client list it only shows ip address and mac address so i can put that to dhcp reserved list (so that it wont change). Device B is not in that list but i can access it if type it ip address in web browbers. So problem is that if leave them lets say week or some days alone they will forget that ip address that they got get new on from that range and is not always same, unless its device mac address and ip address is in dhcp reserved list.

Are there any tool or command what would give me that mac address if know ip address, of device B? (tool or command that work in windows xp)

Device B does not have any build in cabalities so show mac address if i connect to that one.

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August 9, 2010 at 05:33:29
Type in the IP address of device B and the router should automatically fill in the MAC address for you.

Alternatively if you log onto device B and from a command prompt type ipconfig /all it will show the MAC address of the device. You put that into the reserved list.

This is assuming you are using a variation of Windows. Other operating Systems have different methods of achieving the same thing.

MAC address are not normally available within the network without software to extract it.


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August 9, 2010 at 05:53:15
When you run ipconfig / all, Note the Physical Address is also the MAC address.


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August 13, 2010 at 11:09:50
Answers here did not help, since Device A and B are not computers, but its now solved I connected to that device B and then started command prompt and used "arp -a" it shows ip addresses and mac address I copied mac to adsl router dhcp reservation list and problems is now gone.

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Related Solutions

August 19, 2010 at 05:07:35
Try the following:

1) Ping by IP

2) run arp -a and you should see the MAC associate with the IP you just pinged

It matters not how straight the gate,
How charged with punishments the scroll,
I am the master of my fate;
I am the captain of my soul.

***William Henley***

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