This article explains how to design and implement hardware‑offloaded, IP‑ and port‑granular traffic shaping using Open vSwitch, OpenFlow meters, Mellanox HQoS, and DPDK, covering software limits, meter hierarchy, flow‑meter association, deletion workflows, RCU handling, and same‑host traffic considerations.
This guide walks through Open vSwitch fundamentals, covering version and log management, controller and bridge configuration, flow table manipulation, VLAN, QoS, tunneling, sFlow, STP, port mirroring, aggregation, group and meter tables, and practical SDN application examples such as building virtual topologies and packet redirection.
This article chronicles the development of the OpenFlow SDN protocol, detailing each version’s enhancements to the control and data planes, the architecture of switches and controllers, and the key concepts such as flow tables, group tables, meter tables, and message types.
This article explains how OpenVSwitch leverages virtual switches, OpenFlow, and sophisticated caching strategies—including microflow, megaflow, Tuple Space Search, Tuple Priority Sorting, Staged Lookup, and Prefix Tracking—to reduce kernel‑user space communication and improve data‑center network performance.
The article reviews the NSDI 2015 OVS paper, explaining OVS’s architecture, the challenges of OpenFlow‑based software switching, and the cache‑centric performance optimizations such as Tuple Space Search, MicroFlow and MegaFlow caching, while also suggesting further engineering improvements.
This article explains how Openflowplugin uses Cluster Singleton services to elect a master controller for each switch, details the ContextChain registration and instantiation process, and describes how the MastershipChangeServiceManager and ReconciliationFramework enable north‑bound applications to detect and react to mastership changes.
This article explains how to convert three‑layer routing into two‑layer switching (and vice‑versa) using OpenFlow and OVS, covering the differences between routing and switching, flow‑table configuration, ARP handling, TTL management, and practical Linux commands to achieve cross‑subnet communication without a traditional gateway.
This article analyzes the shortcomings of traditional TCP/IP networking, explains the principles of Software‑Defined Networking and OpenFlow, examines flow‑table evolution, and explores overlay technologies like VXLAN, while discussing the ongoing industry debate between revolutionary and incremental approaches.
This article traces the evolution of Software-Defined Networking (SDN) from its early research roots at Stanford through key academic breakthroughs, industry milestones, major open‑source projects, and the rise of SDN‑related startups, highlighting both scholarly and commercial developments up to 2017.
This article explains the fundamentals of Software-Defined Networking, describing how SDN separates control and data planes, introduces programmable APIs like OpenFlow, outlines basic components such as switches and controllers, and discusses the evolution, flow tables, and north‑bound interfaces for network management.
The article reviews the challenges Docker introduces to traditional virtualization networks, explains the concepts of SDN, compares three open‑source container SDN solutions (Flannel, Calico, Weave), and details Qiniu's practical implementation of overlay networking, OpenFlow control, service discovery, load balancing, and security groups for microservice architectures.
The presentation reviews Alibaba's ongoing transition to a large‑scale, SDN‑driven data‑center network using OpenFlow hybrid switches, VXLAN overlay, automated deployment, and discusses the challenges, solutions, and future directions for network elasticity, hybrid cloud integration, and standardization.
This article compiles a comprehensive list of open‑source SDN controllers, switches, and related tools—covering projects like OpenDaylight, RYU, Open vSwitch, and many others—to help network engineers and researchers navigate the rapidly evolving SDN ecosystem.
The article reviews various definitions of Software‑Defined Networking, examines its primary use in network virtualization, discusses additional application areas, outlines obstacles to adoption, critiques OpenFlow limitations, and offers practical recommendations for successful SDN deployment.
