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ONF Certified SDN Engineer (OCSE)

This certification exam attests and formally certifies that the successful candidate has vendor-neutral technical knowledge, skills, and abilities of the major domains of networking practices that support the theory and practice of Software Defined Networking (SDN). It presupposes deeper technical knowledge, skills, and abilities in computer networking practices, and will validate all the major aspects and domains of knowledge and practice in SDN networking environments. The certification will be considered mastery-level validation and certification examination for technical professionals in the domain of SDN networking.

In order to pass the ONF OCSE Exam, a deep technical knowledge from a practitioner standpoint of computer networking is assumed, with specific experience with SDN networking also required. While experiences and job responsibilities may vary, only those who have specific hands-on experience with SDN from a technical level should take this exam. Resources that would be helpful include publications on networking from an engineering/practitioner standpoint, mid-level certifications in networking from such organizations as Cisco, Citrix, CompTIA, Juniper, Metro Ethernet Forum (MEF), Microsoft, or others of similar complexity, and materials freely available from Open Networking Foundation.

Domain 1: SDN Concepts

Describe how SDN solves network issues and implements use cases.

  • SDN Value Proposition
  • Implementing the SDN Forwarding Plane
  • Implementing the SDN Control Plane
  • Evolution of Switches and Control Plane
  • Protocol Limitations that SDN solves
  • Inadequacies in Networks today
  • SDN Devices and Device Functions
  • Application workflow
  • Programmability (Netconf, Yang, REST)
  • NFV and SDN Use Cases

Domain 2: OpenFlow®

Describe and list the OpenFlow® Protocol message structures, features, and headers.

  • Message Types and Headers
  • Basic Operation/Packet Matching
  • Proactive vs Reactive Flows
  • Statistics/Counters
  • Flow Timers
  • Group Tables
  • IPv6
  • Optical Port Properties
  • Port groups and Mapping
  • Message Structures
  • Instructions and actions
  • OpenFlow® Management and Configuration Protocol (OF-Config, OAM, OFDPA, OVSDB, etc.)
  • Action Lists, Sets and Buckets
  • Detailed Packet Matching/TLV's
  • Sub-Actions
  • Metering

Domain 3: SDN Architecture and Ecosystem

Identify SDN architectural component design, API principals and SDN network design.

  • Hybrid switch modes
  • Reactive versus Proactive Applications
  • Common API Primitives
  • API Communication Protocols (REST, RESTCONF, JAVA)
  • Controllers
  • Open Source versus Vendor Specific
  • Anatomy of a Controller
  • Controller Redundancy
  • Imperative/Declarative Paradigms
  • Topology Discovery
  • NBI Models/Implementations
  • Software vs Hardware switches
  • Managing Scalability

Domain 4: SDN Implementations and Migrations

List various SDN migration strategies and deployment options and considerations

  • Controller Placement Design and Considerations/Implementations
  • Application Considerations
  • Scalability Considerations
  • TCAM Limitations
  • Simplifying OpenFlow® with Table Type Patterns (TTP's)
  • Controller Clustering
  • Controller Federations
  • Hierarchical Controllers
  • Migration Strategies Greenfield/Hybrid/Mixed
  • Migration Approaches
    • Direct
    • Phased
  • Migration Planning
  • Migration Best Practices
  • Implications of a mixed network
  • Carrier Ethernet Network Virtualization
  • Packet-Optical Integration
  • Optical Network Service Provider Data Center Interconnection (DCI)
  • OpenStack and SDN Controller interaction

Domain 5: Troubleshooting and Testing

Given a scenario, demonstrate knowledge of how to configure and monitor and test an SDN Network.

  • Troubleshooting Flow Table Scenarios
  • Reading Flow Table Entries
  • Packet/Wireshark Decoding/Debugging
  • REST Messaging Types/Wireshark
  • Curl debugging
  • Mininet set-up
    • ovs-ofctl
    • mn sudo
    • curl
  • Description of the test program
    • Test Profiles
    • Standards
    • Specifications
  • Performance Benchmarking
  • Tool Sets
    • of-test
    • wireshark dissector
    • flowsim
    • flowvisor

Domain 6: SDN Security

Identify ways to secure SDN controllers and switches.

  • Benefits to networks by SDN architecture
  • TCP level secure channel/communication/session establishment between controller/switch
  • In-Band and Out-of-Band management security considerations
  • Controller HA
  • The Implications of SDN on Network Security
  • Securing the OpenFlow® Protocol
  • Securing the OpenFlow® data plane
  • Software Development Lifecycle
  • Controller/Element Hardening
  • Securing users in a Wi-Fi environment

Domain 7: SDN Futures

List and describe SDN future projects and developments.

  • Describe the purpose of Protocol Independent Forwarding (PIF) and P4, and other packet forwarding innovations beyond OpenFlow?
  • Segment Routing
  • Open Source Initiatives (ONF, ODL, Ryu, ONOS, OPNFV, OCP, ODCA, Open Config)
  • TTP Use Cases
  • Mobile traffic offload
  • Pipeline Compiling
  • Optical Extensions
  • Security Extensions
  • Wireless/Mobility Extensions