The document "Problem Statement: Overlays for Network Virtualization"
discusses the needs for network virtualization using overlay networks
in highly virtualized data centers. The problem statement outlines a
need for control protocols to facilitate running these overlay
networks. This document outlines the high level requirements to be
fulfilled by the control protocols related to building and managing
the mapping tables and other state information used by the Network
Virtualization Edge to transmit encapsulated packets across the