Abstract
Software-Defined Networking (SDN) has greatly enriched the flexibility of network management. It introduces a central controller to take over most network functions that otherwise reside in distributed forwarding devices. Such a centralized design, however, tends to make control channel a bottleneck due to bandwidth fatigue. Existing work saves control channel bandwidth at the expense of losing visibility of most or mice flows. This paper proposes FastLane, a framework for bandwidth-efficient SDN flow setup without sacrificing global flow visibility. FastLane advocates that the controller inform only a flow's ingress switch of the flow's forwarding path while switches themselves cooperate to complete flow setup. This way, FastLane keeps minimum traffic for flow setup in control channel and leaves the rest to data plane. The analytical results validate FastLane's higher bandwidth efficiency over traditional SDN, especially for relatively long forwarding paths. For a 3-switch path, FastLane can already save more than a half of bandwidth. The saved bandwidth can embrace more flow setups and thus reduces flow latency.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
