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MAC Address

Posted on 2000-02-18
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Last Modified: 2013-12-27
Hi
I know than LAN Card have a MAC address
but Modems???
How I can look for MAC address on my modem?
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Question by:pmarkov
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5 Comments
 
LVL 12

Expert Comment

by:Otta
ID: 2535486
You can look, but you won't find.

When you connect to your ISP, their equipment provides a MAC address, so that IP-packets received to that MAC address will be forwarded through your modem to your computer.
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j2 earned 200 total points
ID: 2539707
Not quite right otta.

Modems does not have MAC adresses, thats true.

But it is YOUR machine that 'makes up' a MAC adress when connecting to your ISP, since a MAC is required by PPP, PPPoE. The first two words of the 'virtual MACadress' is derived from the maker of the protocol stack, the rest is randomly generated upon connect.
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Author Comment

by:pmarkov
ID: 2541673
Hi

"Virtual MACAdress is randomly generated upon connect....." and is different every time when I connect to my ISP with Dial-Up???

 



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Expert Comment

by:j2
ID: 2541829
Yes.
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Expert Comment

by:j2
ID: 2541834
(atleast that is how it is handled on win95 / 98 / NT / Win2000 / Linux , if you are using another platform i cant really tell how it is done.)
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