Windows DatabaseebooksStatistical Information

LWE10021 : How to find the physical address of a network adapter

Symptom:

Physical address is sometimes needed for configurations

Cause:

Firewalls, Router, DHCP Server and the like use physical addresses to identify a client

Solution:

IP adresses are like postal addresses, a client can move to a different place. Therefore you cannot use an IP address to identify a client computer correctly, especially since these addresses can be leased temporarily by a dhcp server.

If you need to identify one ore more physical Adresses of your computer (also called "MAC" addresses - "media access control", the lowest level of the so called OSI Model), the easiest way is in the command shell:

  1. On Windows XP computers you can use the "getmac" command
  2. On every Windows computer you can use the "ipconfig /all" command:
    in line "Physical Address...." you'll find the MAC address of the correspondign network adapter
    (ipconfig /all|find /i "phy" has a similar result as the getmac command)

Physical addresses consist of 6 two-hexadecimal-digits, seperated either by dash, colon or blank. Hexadecimals are numbers based on 16 instead of 10 --> digits are numerals 0-9 and letters A-F.
The beginning of a MAC depends on the vendor, so the beginning of different types of adapters (WLAN, Ethernet...) usually look very different, while similar adapters (f.ex. Intel-Ethernet) differ in the rightmost digits only.


Disclaimer:

The information provided in this document is intended for your information only. Lubby makes no claims to the validity of this information. Use of this information is at own risk!
Copyright © 2004-2011 Lubby (V3.0.10 Aug 2011)
Sponsored by Keskon.
Statistical information by Google Analytics