Virtual MAN : A VLAN Management System for Enterprise Networks

In this demonstration, we present Virtual MAN, a system which addresses plethora of unique challenges network operators face in managing Virtual Local Area Networks (VLANs) in enterprise networks. Despite their wide prevalence in enterprise networks, the management process of VLANs is ad-hoc, error-prone, and has received little systematic treatment in the research community. We have identified the most commonly performed tasks by the network operators when managing VLANs and developed a system to automate these tasks. From an operator standpoint, the system not only provides a network wide view of how VLANs are organized in an enterprise network but also assists them in performing actions like extending current VLANs and configuring new VLANs. Network managers can also use this toolkit to detect and diagnose suboptimal root bridge placements and misconfigurations such as missing and redundant links. The system also provides an interactive graphical interface for visualizing the effect and impact of various VLAN design changes. The system already saw the first deployment of its beta version on Purdue University campus network and is effective in understanding VLANs design and in identifying VLANs with misconfigurations or suboptimal designs.