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View Full Version : How to look up IP address via MAC?

Gouki
03-15-2005, 11:58 AM
I've got a Lantronix Print Server that I need to get setup for our network...problem is, I have no idea what the current IP address of it is, so I have no way of telneting in to it to make the changes that I need.

I do howerver have the MAC address. Is there a way I can look up what its currently assigned IP address is by using the MAC address?
Mntsnow
03-15-2005, 1:27 PM
Which model do you have Gouki?
Gouki
03-15-2005, 1:41 PM
It's an EPS2-100
Mntsnow
03-15-2005, 1:43 PM
I'll check around
Gouki
03-15-2005, 1:45 PM
I've got an older version of the EZ-WebCon software and there's a feature in version 2.02 that allows you to assign an IP address given the MAC address...but for whatever reason it ain't workin. Just sits there...bleh. lol
Mntsnow
03-15-2005, 1:53 PM
4 - 2
4.1.1 Using EZWebCon
The EPS must have an IP address before you can log into it using EZWebCon. To assign
the IP address from EZWebCon:
1. Start EZWebCon. Instructions for installing, running, and using EZWebCon can be
found on the distribution CD-ROM.
2. Click on the Lantronix logo menu in the bottom left corner of the EZWebCon win-
dow, then select
Assign IP Address to Server
.
3. Fill in the following information:
A. The last three bytes of the EPSŐs hardware address. The hardware address is
printed on the bottom of the Server.
B. The desired IP address.
TCP/IP Configuration
C. The subnet, if you wish to use a subnet other than the default.
D. The IP address of the TFTP server you wish to use, if desired.
4. Click
OK
.
5. Cycle power on the server. EZWebCon will let you know whether the conŢgura-
tion was successful.
Gouki
03-15-2005, 1:55 PM
*edit* Ya...that's what I've been trying. lol. But it ain't workin...
Mntsnow
03-15-2005, 2:05 PM
Hmmmm

Have you tried updating the firmware?
Mntsnow
03-15-2005, 2:08 PM
http://ltxfaq.custhelp.com/cgi-bin/ltxfaq.cfg/php/enduser/std_adp.php?p_faqid=406&p_created=941243319 is where you can get the latest firmware and EzWebCon for the print server
Gouki
03-15-2005, 2:16 PM
I've got the latest version of EZ-WebCon and downloaded the firmware...now trying to figure out to load the firmware on to it without first knowing what its IP address is. LOL
Mntsnow
03-15-2005, 8:40 PM
LOL.....Doesnt it have a serial interface you can use to terminal into with the use of a serial cable? Every print server I have ever used has one....
mickwish
03-15-2005, 8:49 PM
How about using an app like AngryIP Scanner (http://www.snapfiles.com/get/angryip.html), which shows IP and MAC and stuff of every device on your LAN. :cool:

Cheers
Mick
hirschY
03-15-2005, 9:29 PM
if its on a dhcp network, check the dhcp server log.
if all else fails, grab ethereal, www.ethereal.com
do a quick capture and browse the results.
they have the mac listed along with the IP info

PS, if this is a work network, check with IT first :P
Gouki
03-16-2005, 11:23 AM
LOL.....Doesnt it have a serial interface you can use to terminal into with the use of a serial cable? Every print server I have ever used has one....

Ya it does...but I must not be setting up the terminal right or something. Looked in the manual and on their website and couldn't find anything on how to set that up...
Mntsnow
03-16-2005, 12:04 PM
9600 baud, 8bits, 1 stop bit and no parity. Flow control off.
Gouki
03-16-2005, 1:25 PM
Tried both Com1 & 2...tried serial port 1 & 2, no dice. Attached are the respective error messages that I receive :
Gouki
03-16-2005, 2:01 PM
How about using an app like AngryIP Scanner (http://www.snapfiles.com/get/angryip.html), which shows IP and MAC and stuff of every device on your LAN. :cool:

Cheers
Mick

Pretty neat little utility! Been doing some scanning but haven't found it yet...makes it hard when I have no idea what range to put in. lol. :rolleyes:
Mntsnow
03-16-2005, 2:14 PM
Looks like you have the comm ports assigned to other devices such as a modem ect
Gouki
03-16-2005, 2:31 PM
Hmmm...there's no modem's installed on this machine, how can I look up what is assigned to a given COM port?
a Bill
03-22-2005, 11:17 AM
Did you already try...

arp -a

Your system keeps a log.
Gouki
03-22-2005, 11:50 AM
Doh. Actually this problem has been resolved for a little while now and forgot to update this thread! :rolleyes:

Found out that when you reset these things to default that it's set to DHCP, which would explain why I had no clue what the IP was and that it was never listed in the manual. lol The problem was that the EZ-Webcon software wasn't detecting the server with the new IP.

What I ended up doing was resetting it back to defaults a number of different times until FINALLY EZ-Webcon detected it. Not sure why it wasn't working right...but first thing I did was assign it an IP address so I wouldn't have to deal with the same problem twice. lol

Anyways...thanks a bunch for all the suggestions! :D