There is nothing more frustrating than logging into a Windows Server and seeing interfaces named Local Area Connection, Local Area Connection 2, and Local Area Connection 3 and not knowing which is which. Since Windows 2000 Server, we’ve been able to give names to interfaces. This has enabled us to do a few things, including using an icon to identify the Active Directory domain connection (only Windows 2008) within Group Policy and using clear names for interfaces. The best way to name a network interface is to make something that is self-documenting, repeatable, and easy to understand.
Best practices for network interface naming conventions