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Network Programmability and Automation (What Is Software Defined…

- - - - Sr VP and GM
        Networking and Security
        VMWare
        
        OpenFlow
        
        First major protocol of SDN
        
        Decoupling of Network Devices' control and data plane
        
        control plane = brains of a network device
        data plane = hardware or application specific integrated circuits
        
        Control plane is responsible for the traffic that are directed to the router e.g routing protocols, VTP, Spanning Tree Protocol.
        Data Plane or the Forwarding Plane is responsible for the actual movement of traffic, e.g Access-Lists, prefiix Lists, CEF
        
        low-leve protocol used to influence the flow of the traffic, provides interface with the hardware table-RIB or FIB, for example traffic to destination should egress port 48)
        
        was not intended to interact with management protocols such as snmp
        
        openflow use more than the destination addresses as conventional protocols used. thus providing granularity than for example, PBR
        
        one of the goal of openflow is vendor neutrality.
        
        OpenFlow is not the first protocol to decouple the Data Plane and the Control plane, but it is the one that started the SDN revoulution
        
        Forwarding and Control Element Separation(ForCES)
        
        Active Networks
        
        Routing Control Platform
        
        Path Computation Element
        
        Why OpenFlow?
        
        Martin Casado at national government
        
        he was able to program and manipulate the computers and servers as he needed
        
        for network, it is impossible because each network device is "closed" - lock from installing third party application and only had CLI
        
        modern ways of managing large numbers of devices for configuration management and analysis
        
        4 more items...
        
        was it possible to redirect traffic based on application?
        
        Did network devices have an API?
        
        was there as sinlge point of communication to the network
        
        Nicira
- - - - Big Switch Networks, HP, and NEC)
  - - - VMs operate as: routers, firewalls, load balancers, IDS/IPS, VPN, application firewalls and other service