28.2.2018: CT-Talk mit Dr. Förster

Dr. Klaus-Tycho Förster (Forschungsgruppe Communication Technologies) | "On Scheduling Consistent Software-Defined Network Updates" | 28.2.2018, 13:15, SR7


While Software Defined Networks are controlled centrally by one (logical) controller, the dissemination of updates in the network itself is an inherently asynchronous distributed process. Even though eventual consistency (e.g., no forwarding loops) is easy to guarantee, many useful network properties might be violated during the update process.
In this talk, we will concentrate on the problem of scheduling such updates in a way that consistency properties are not violated. In particular, we focus on the consistency properties of loop freedom and congestion freedom, providing a general overview and pointing out open problems.