Compositional Hypervisor for Software-Defined Networks
Explore CoVisor, a compositional hypervisor designed for Software-Defined Networks by Xin Jin, Jennifer Gossels, Jennifer Rexford, and David Walker from Princeton University. This innovative hypervisor allows for the assembly of multiple controllers, defining abstract topologies, and enhancing flow table compilation efficiency. Discover how incremental compilation, priority assignment, and advanced indexing techniques are employed to optimize network performance.
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Presentation Transcript
CoVisor: A Compositional Hypervisor for Software-Defined Networks Xin Jin, Jennifer Gossels, Jennifer Rexford, David Walker Princeton University
Compositional Network Hypervisor Assembly of multiple controllers Single admin, multiple controllers Compose controllers with parallel, sequential or overriding Definition of abstract topologies One physical switch -> many logical switches
Challenge Flow table compilation efficiency
Solution Incremental compilation Incremental priority assignment Advanced indexing for fast rule lookup
Incremental Priority Assignment Heuristics Parallel: Sequential: Overriding:
Advanced Indexing Structure Given a target rule Rt, how to efficiently find the rules in a flow table that overlap with Rt?
Implementation and Evaluation Implement with 4K LOC on OpenVirteX Simulation experiments against a strawman compiler
