veil - VEIL A"Plug-Play Virtual(Ethernet Id Layer for Below...

Info icon This preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
VEIL: A “Plug-&-Play” Virtual (Ethernet) Id Layer for Below IP Networking Sourabh Jain, Yingying Chen, Zhi-Li Zhang, Saurabh Jain { sourj, yingying, zhzhang, saurabh } @cs.umn.edu University of Minnesota-Twin Cities Abstract —This paper proposes VEIL —a novel, “plug-&-play” Virtual (Ethernet) Identifier ( Id ) Layer for below IP networking. The objective is two-fold: i) VEIL directly addresses the scala- bility, efficiency and reliability challenges facing the traditional Ethernet, while retaining its “plug-&-play” feature; ii) but perhaps more importantly, VEIL provides a uniform (below IP) convergence layer to support a large, dynamic and heterogeneous (layer-2) network that is capable of connecting hundreds of thousands or more diverse physical devices. The key idea in our design is to introduce a topology-aware, structured virtual id ( vid ) space onto which both physical identifiers as well as higher layer addresses/names are mapped. VEIL completely eliminates network-wide flooding in both the data and control planes, and thus is highly scalable and robust. I. I NTRODUCTION The explosive growth of the Internet has enabled a wide range of diverse devices to be interconnected and communicate with each other through a variety of disparate technologies. While serving as the universal “glue” that pieces together various heterogeneous physical networks, the Internet Protocol (IP) suffers certain well-known shortcomings, e.g., in terms of need for careful and extensive network configurations, relatively poor support for mobility, and so forth. In contrast, layer-2 technologies such as Ethernet are largely “plug-&- play” in that hosts are equipped with persistent MAC ad- dresses, and Ethernet switches automatically learn about host addresses and location, adapt to changes in network topology as well as host mobility, perform packet forwarding seamlessly with minimal operator configuration and intervention. Because of this simple “plug-&-play” semantics, today’s switched Eth- ernet technology (where the collision domain is no longer a size-limiting factor) has been rapidly expanded to large, dynamic networks, such as large data centers and Metro Ethernet, with up to tens of thousands switches and millions of hosts. On the other hand, the unprecedented scale as well as the demanding efficiency and robustness requirements of these new large, dynamic (layer-2) networks also pose revolutionary challenges on the Ethernet technology that was originally developed for small, local area networks. For instance, the network-wide flooding –often resorted by Ethernet switches to locate end hosts and forward packets whose locations are yet to be learned–not only significantly reduce the network capacity. The spanning tree algorithm used to avoid forwarding loops not only results in sub-optimal forwarding paths, but also is slow to adapt to changes in the network topology.
Image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern