1. Towards A Common Network Abstraction Model for SDN and NFV Topic: SDN/NFV Convergence
IETF – 90 Toronto
Wednesday 23/07/2014
Evangelos Haleplidis
Jamal Hadi Salim
Spyros Denazis
Odysseas Koufopavlou

2. Network function definition
a functional building block within a network infrastructure, which has well-defined external interfaces and a well-defined functional behavior. In practical terms, a Network Function is today often a node or physical appliance

3. Motivation (1)
SDN
Abstractions of resources of the forwarding plane for control and management
NFV
Virtualization of resources of the forwarding plane.
Work towards common abstractions for NF lifecycle

4. Motivation (2) Network Resource Lifecycle Instantiate resource (NFV)
Initial Configuration (SDN)
Control (SDN)
Interconnect with other resources (SFC/SDN)
Destroy resource (NFV)

5. SDN & NFV

6. SDNRG alignment

7. Model Requirements Building block based Model must be extensible
Ability to compose functions (based on definition)
Model must be extensible
To accommodate future functions
Interface should be model agnostic
Allows expressibility to model

8. Abstract model

9. ForCES as the abstraction
Inherent SDN solution
Building block based model (LFBs)
Extensible model
Protocol agnostic to the model

10. Big picture

11. NFV Proof of Concept

12. Thank you for listening
See you at the Bits N Bites
References:
Haleplidis, Evangelos, Jamal Hadi Salim, Spyros Denazis, and Odysseas Koufopavlou. "Towards a Network Abstraction Model for SDN." Journal of Network and Systems Management (2014): DOI:
NFV_and_integrated_SDN
terminology/

13. Bits n Bites demo logical setup

14. NFV view of separation
Separate Software/Hardware