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Make&Activate-Before-Break: Policy Preserving Seamless Routes Replacement in SDN

  • Yefim Dinitz
  • Shlomi Dolev
  • Daniel KhankinEmail author
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 11085)

Abstract

We consider the problem of replacing several dependent routes in a Software-Defined Network (SDN). Delaet et al. focused on the replacement of a single pair of routes and proposed a verification idea for launching a new sub-route. Dinitz et al. suggested a dependence graph model for solving the problem with several routes pairs, and described the sub-route launching verification in the form of a high level network protocol. In both works, each sub-route is seamlessly updated using the Make&Activate-Before-Break (MABB) approach, eliminating flow stopping and delays in transmission. According to the MABB approach, a new sub-route is first fully prepared by possibly adding additional traffic in the sake of readiness signaling and seamless route change; after that the new sub-route is activated by redirecting the flow through it and the corresponding part of the current route is dismantled. In this brief announcement, we describe our extension for the case of replacing several dependent routes to also address network policies preservation. Additionally, we describe the existing verification gap of OpenFlow (the standard communication protocol tool for SDN) in signaling the readiness of route changes. We describe a verification protocol of route change readiness by means of OpenFlow, called Route Readiness Verifier (RRV). We show that RRV closes the verification gap in OpenFlow for route updates.

Keywords

Software-Defined Networking SDN MABB RRV Routes update Seamless routes update Network policy Network function Dependence graph 

Notes

Acknowledgments

This research was (partially) funded by the Office of the Israel Innovation Authority of the Israel Ministry of Economy under Neptune - the Israeli Consortium for Network Programming, generic research project, and by the Lynne and William Frankel Center for Computer Science.

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Copyright information

© Springer Nature Switzerland AG 2018

Authors and Affiliations

  1. 1.Ben-Gurion University of the NegevBeershebaIsrael
  2. 2.Shamoon College of Engineering (SCE)BeershebaIsrael

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