Received: 22-07-2015 / Accepted: 03-09-2015
The Software Defined Networking technology promises a bright future to IP network. Many researcheshave beenbeing conducted. However, until now there are only a few frameworks supportingemulation and implementation to verify the research. Mininet is one of the most popular tools because of the openness, cost effectiveness, and full Openflow support. By default, Mininet helps to create a standalone typical SDN network along with lightweight clients. In this paper, we explorethe extended functions of network topology emulation in Mininet based on Virtualbox, such as Internet connection, independent OS clients, standard routing controller, and automatic flow logging. Therefore, it brings about an easier and convenient facility to research and training.