In order to solve the problems related to future network innovation

researchers propose numerous solutions.However

these solutions need to be tested in an large-scale network experimental environment

which cannot be totally supported by the current Internet.Thus

constructing a network innovation experimental environment is meaningful for the further develop of the Internet.We propose Tsinghua University Network Innovation Environment (TUNIE)

a network innovation experimental environment in China

aiming to support research in future network based on network virtualization.In this paper

we survey the past and the state-of-the-art of network innovation experimental environment

as well as certain key topics.Then we introduce design goals and key technologies of TUNIE.TUNIE is already deployed in several clusters

applied in teaching and research

and supports some network innovation experiments.