Confirm Physical Port MAC Addresses and Match Them to Windows Device Names

Follow this procedure to confirm MAC addresses of installed NEM and EM ports and match them to the Windows Device Friendly Names.

What to Do

To open a Windows command prompt and run ipconfig /all follow these steps:

  1. Click -> Start -> Run.

    The Run dialog box appears.

  2. In the Run dialog box, type cmd then click OK.

    The cmd.exe DOS window appears.

  3. In the cmd.exe DOS window, type ipconfig /all.

    The output from the ipconfig /all command identifies the installed NEM and EM ports by the connection name in the order of enumeration.

Note

The output does not necessarily follow an alpha or numeric order. You can customize the connection name in the Network Connections folder, for details see Microsoft's documentation. The output below illustrates how the Windows operating system, by default, assigns logical names to network interfaces.

2nd Ethernet Adapter Port

1st Ethernet Adapter Port

In the sample output:

where Ethernet Adapter Local Area Connection is the Windows default logical name (friendly name) assigned to a network interface.

Note that the first Ethernet Adapter Local Area Connection appears with a null value. This entry identifies the connection-specific DNS suffix ( for example, east.sun.com) and the physical MAC address for that port.

where Ethernet Adapter Local Area Connection 2 identifies a disconnected media state, a description, and the physical MAC address for that port.

Note

The numeric value following the Windows logical friendly name refers to the network connection number.