The Migrate Server Roles to Windows Server 2008 R2 is a TechNet page with links to guides that describe how to migrate Windows roles and features.

Check out the following guides for networking roles and features:

·         Active Directory Domain Services and Domain Name System (DNS) Server Migration Guide

·         Dynamic Host Configuration Protocol (DHCP) Server Migration Guide

·         Health Registration Authority Migration Guide

·         Network Policy Server Migration Guide

·         Routing and Remote Access Server Migration Guide

·         BranchCache Migration Guide

·         IP Configuration Migration Guide

Enjoy!