MAC address RESOLVED thnaks

[Bleep]

Getting cable and installed another nic in my machine the problem is when I look at my network I do not know which card is which as they are the same brand.
If I can find the mac address of each I will be able to tell which is which. I removed the card I had just installed. If I do a ipconfig it is still showing both cards. It has got me really confused.
Bleep

 

[FUBAR]

I believe that the cards should say someplace on them (physically) what the mac is, correct? If not, what OS are you using? 2k should have the Local Network as the first card. But if you can't remember which then it's a crap shoot.

 

[Bleep]

FUBAR:
Your name is what I am!
I got the card in front of me and dont know what numbers I am looking at. I am using 98 SE. I got 4 machines on a small LAN using a 8 port hub and when I put the new card in it killed my lan from that machine, It also put all the configuration stuff from my other card on the new one so I could not figure out which was which. My best bet might be to get a router, I am using the ICS that comes with win 98 SE, not very reliable but cheap.
Bleep

 

[FUBAR]

Hmm, your tools don't lend themselves to an easy solution and I am eating my words about the printed mac address... it was only certain devices and maybe really old net cards that had it printed.

As I don't have a 98 box at my disposal I can't really tell how to tell either. One way you could go about it would be to record both displayed MAC's, then physically remove one card, boot in safe mode, delete all net cards shown, reboot normal and re-install one card and see what it's mac is.

 

[brisco]

Fubar is correct. Record both MAC addresses, then remove one card. It is the only way with Win98 to identify identicle NICs in the same machine.

 

[Bleep]

Well I found the mac address by running winipcfg, But strangly I have 5 network cards installed now 2 in one machine and 1each in the other machines they all have the same mac address 44-45-53-54-00-00 they are all made by the same company but are different in that 3 of them are 10baseT and the others are 10-100 are all nics from the same manafacture have the same mac address??
Bleep

 

[FUBAR]

Well that's just lovely... MAC's were supposed to be burned into the hardware as an un-changable id method... but it seems that more than once this topic has come up here. There must be a util with the drivers, or a jumper or something that allows you to change the MAC to suit your needs, however screwed up they may be.

Gotta love it when some company with a wild hair up their arse decides to screw with the universe. They weren't made by MS by chance?

 

[ojai00]

<< Well I found the mac address by running winipcfg, But strangly I have 5 network cards installed now 2 in one machine and 1each in the other machines they all have the same mac address 44-45-53-54-00-00 they are all made by the same company but are different in that 3 of them are 10baseT and the others are 10-100 are all nics from the same manafacture have the same mac address??
Bleep >>



Could it be possible that out of all the NICs that were manufactured, you have 3 that have the same MAC address? That MAC address seems weird to me in that there are no letters in it, although the basic format of it does look like a MAC address. Try to look over the card for another address that looks like that one. Hope this helps.

 

[ScottMac]

When you go through a "router" the packets take on that "router's" MAC address. Any traffic from the other side of a router will have that router's MAC.

That's what happens when you specify a "Default Gateway." If the host decides the destination is on another network/subnetwork, the host uses the MAC address of the "default gateway" as the destination address, and lets the higher layer protocols figure out where the packet should be sent.

If you have a PC set up to forward packets, you essentially have a router, and all the rules apply.

FWIW

Scott

 

[FUBAR]

That shouldn't change his ipconfig output tho... should it? AFAIK, that command is going to the card for the MAC, but I was wrong once.

Those do look fishy though, with the 00:00 at the end, like a settable mac or something.

 

[kerykeion]

<<

<< Well I found the mac address by running winipcfg, But strangly I have 5 network cards installed now 2 in one machine and 1each in the other machines they all have the same mac address 44-45-53-54-00-00 they are all made by the same company but are different in that 3 of them are 10baseT and the others are 10-100 are all nics from the same manafacture have the same mac address??
Bleep >>



Could it be possible that out of all the NICs that were manufactured, you have 3 that have the same MAC address? That MAC address seems weird to me in that there are no letters in it, although the basic format of it does look like a MAC address. Try to look over the card for another address that looks like that one. Hope this helps. >>



Nope, it looks like a MAC address, but 44-45-53-54-00-00 is not a valid one. And if there is a tool that changes it, I'd love to know what it is/or where it is...

 

[her209]

why don't you just go to the windows dos prompt and type 'ipconfig /all'

that should tell you the ip addresse and mac address for each of the ethernet nics installed on a windows machine.

 

[Bleep]

Well I got the mac addresses but the ipconfig/all does not show all the stuff as the dos window is not pageable so I can only see the last nic. I put the card in another machine and read it (the MAC address) out and then put it back in.
Thanks everyone for the advice.
Bleep

 

[Routerjunky]

For future reference

mac address 44-45-53-54-00-00 is the mac for ppp adapters on win9x hosts. There should be a drop down box which will let you chose the different nics on your host.

on NT hosts you can see all of your nics by issuing ipconfig /all|more at the command prompt. The character between all and more is the pipe. On my keyboard the pipe is above the enter key.