Software Defined Networking (SDN) Introduction

Info Level: Beginner Presenter: Eli the Computer Guy Date Created: May 15, 2013 Length of Class: 25:14 Research Assistance: Tracks Networking Prerequisites B…
Video Rating: 4 / 5

15 thoughts on “Software Defined Networking (SDN) Introduction

  1. While it’s true that Software Defined Networks (SDNs) continue to grow and
    get the majority of the buzz in the news these days, another technology
    called Application Defined Networks (ADNs) is starting to make its presence
    known in the business world as well and it has the potential to really take
    off. Based on what I know about Application Defined Networks (ADNs) this
    technology has the ability to fill some of the gaps that Software Defined
    Networks (SDNs) present.

    Application Defined Networks (ADNs) and Software Defined Networks (SDNs)
    are both based on similar concepts but solve separate ends of a complex
    problem. Application Defined Networks (ADNs) allow enterprises to securely
    reach and consume economic benefits of cloud services, where Software
    Defined Networks (SDNs) are resident. Software Defined Networks (SDNs)
    primary focus is inside the data center to allow for greater dynamic
    allocation of network resources to deal with spikes in resource demands.
    Software Defined Networks (SDNs) have not addressed the complex task of
    facilitating secure access to the cloud data centers faced by multi-site
    enterprises. Application Defined Networks (ADNs) primary focus is
    virtualizing the edge of the data center creating secure access to the
    cloud services. Application Defined Networks (ADNs) focus on the millions
    of brick and mortar enterprise locations need to resolve the core security,
    performance, and reliability conflicts that are limiting application
    expansion to data centers.

    For the purposes of my comment, an application can basically be defined by
    a business need and may include things like payment, loyalty, guest access
    Wi-Fi, point-of-sale support, tank monitoring, etc.

    In short, an Application Defined Network (ADN) simplifies security by
    establishing discrete independent networks that do not require complex
    security rules to partition traffic types. It is designed so that specific
    security and performance policies can be established at the application
    level versus the network interface level which allows for applications with
    contrasting security policy requirements to be completely isolated from one
    another and facilitated with customized security features. It eliminates
    the need for new application specific devices to securely petition discrete
    application networks and eliminates future capital costs. If an Application
    Defined Network (ADN) is breached by an outside party, the ability of the
    breach to bleed between applications is virtually eliminated due to each
    application having customized security and performance policies.

    After comparing both of these technologies, I feel that Application Defined
    Networks (ADNs) have an advantage over Software Defined Networks (SDNs)
    simply because Software Defined Networks (SDNs) have not addressed the
    complex task of facilitating secure access to the cloud or data centers for
    multi-site enterprises. Most businesses today have multiple locations over
    a large geographic area and this is exactly what Application Defined
    Networks (ADNs) are designed to handle.

  2. thank you Eli.. you gave very clear view of SDN’s, i want to see myself as
    a programmer to that control plane, but i am really confused, can you
    please tell me how to start

  3. this seems to me to be similar to Cisco software on things like catalyst
    6500 series etc where the supervisor is separated and the network is
    tightly controlled for the network and the Unified Network architecture is
    this similar or a simpler version for SOHO /SB use? especially some of the
    newer stuff i have seen in there VOIP stuff (doing same sort of stuff as
    your angry wife example) thanks for the video

  4. Great explanation Eli, thank you. For a person working at one of those
    networking companies you mentioned, your method of explaining SDN provides
    great clarity on what it is and is not.

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