Windows Server 2012 R2 NIC Teaming (LBFO) Deployment and Management
NIC teaming, also known as Load Balancing/Failover (LBFO), allows multiple network adapters to be placed into a team for the purposes of bandwidth aggregation, and/or traffic failover to maintain connectivity in the event of a network component failure. This guide describes how to deploy and manage NIC Teaming with Windows Server 2012 R2.
UPDATE: Technical Documentation for System Center 2012 R2 – Virtual Machine Manager
Here you see the steps for VLAN tagging in System Center 2012 R2 Virtual Machine Manager :