Abstract
Virtual machine technologies have evolved during the last 40 years from mainframe to commodity (x86) systems. Although these techniques are nowadays quite mature in data center environments (consolidation, service continuity, etc.), scenario-based virtual infrastructure management tools keep evolving in research and educational areas. In this work, one such tool is described, Virtual Network User Mode Linux (VNUML), which has been successfully used during the past few years to help researchers and educators to build testbeds in a wide range of innovative network environments (such as IPv6 IX design and third-generation networks). Such application cases are detailed in this paper, assessing the soundness and flexibility of the tool. However, in spite of these successful applications, several challenges remain to be solved in virtual scenario management (distributed management, decoupling from any particular virtualization technique, and alignment with industry standards), and the way they are being addressed as part of VNUML’s evolution is also discussed.
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