User Authentication - Specific DC Server

I was wondering if there is a way to force a user account, at logon, to authenticate to a specific domain controller?

Example would be if there are 3 domain controllers (DC1, DC2, DC3) and I want a user account to authenticate to only one of the controllers how do I force that user account to only look at DC2 for authentication and not any other DC server?

Not sure if this is even possible.

Any and all help is greatly appreciated,

Len

Leonard Hoffman