SDN Definitions

  • O

    OVSDB (Open vSwitch Database Management Protocol)

    The Open vSwitch Database Management Protocol (OVSDB) is an OpenFlow configuration protocol that is designed to manage Open vSwitch implementations.

  • P

    Path Computation Element (PCE)

    Path Computation Element (PCE) is a network component, application or node that can apply computational constraints and compute a network path or route based on a network graph. The PCE has access to topology information for the entire network and uses this in path computations.

  • Plexxi

    Plexxi is a Cambridge Massachusetts company that makes software-defined networking (SDN) software. The company was founded with venture-based funding in 2011. Plexxi's management team is composed of networking professionals.

  • Policy and Charging Rules Function (PCRF)

    Policy and Charging Rules Function (PCRF) is the part of the Evolved Packet Core (EPC) that supports service data flow detection, policy enforcement and flow-based charging.

  • POX

    POX is an open source development platform for Python-based software-defined networking (SDN) control applications, such as OpenFlow SDN controllers.

  • programmable network (PN)

    A programmable network is one in which the behavior of network devices and flow control is handled by software that operates independently from network hardware.

  • S

    SD-WAN (software-defined WAN)

    Software-defined WAN (SD-WAN) is a technology to distribute network traffic across wide area networks (WAN) that uses software-defined networking (SDN) concepts to automatically determine the most effective way to route traffic to and from branch offices and data center sites.

  • SDN application (software-defined networking application)

    An SDN application is a software program designed to perform a task in a software-defined networking (SDN) environment. SDN applications can replace and expand upon functions that are implemented through firmware in hardware devices in a conventional networking environment.

  • SDN controller (software-defined networking controller)

    An SDN controller is an application in software-defined networking (SDN) that manages flow control to enable intelligent networking. SDN controllers are based on protocols, such as OpenFlow, that allow servers to tell switches where to send packets.

  • SDN overlay (software defined networking overlay)

    An SDN overlay is a deployment method for network virtualization and software-defined networking (SDN) that involves running a logically separate network or network component on top of existing infrastructure.

  • software-defined networking (SDN)

    Software-defined networking (SDN) is an umbrella term encompassing several kinds of network technology designed to make a network agile and flexible like the virtualized server and storage infrastructure of the modern data center.

  • software-defined networking monitoring application (SDN monitoring application)

    An SDN monitoring application is a software program that oversees the traffic in a software-defined network (SDN) as a component of network management.

  • T

    Trema

    Trema is an open source framework for developing OpenFlow controllers for software-defined networking in the Ruby and C programming languages.

  • V

    vCPE (virtual customer premises equipment)

    Virtual customer premises equipment (also referred to as vCPE or cloud CPE) are enterprise network services delivered through software. While providers must manually deploy traditional, physical CPE devices onsite, they can provision and manage vCPE remotely.

  • vEPC (virtual Evolved Packet Core)

    The vEPC offers a framework to support converged voice and data on 4G Long-Term Evolution networks. vEPC is the abstraction of Evolved Packet Core components into software that runs on generic servers, potentially cutting costs and improving service delivery.

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