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Network Function Virtualization Orchestration LI


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Network Function Virtualization Orchestration LI

  1. 1. NETWORK FUNCTIONS VIRTUALIZATION Symposium on Computer Science and Engineering University of Massachusetts at Amherst May 2, 2015 K. ARVIND KRITHI60
  2. 2. Plan of the Presentation • Problem • Solution – Network Functions Virtualization • Standards • Benefits • Enabling Technologies: Virtualization and Cloud • Orchestration • Conclusion
  3. 3. Carrier Networks Variety of Network Functions Message Router Session Border Controller WAN Accelerator Deep Packet Inspection Carrier Grade NATFirewall Tester/QoE Monitor SGSN/GGSN Provider Edge Router BRAS MME
  4. 4. Problem •Variety of network appliances •Proprietary hardware •Expensive •Service deployment slowed down •Space •Power •Rapid obsolescence •Constrain innovation Ref: ETSI NFV white paper
  5. 5. Solution: NFV •Network Functions Virtualization • Standard high volume hardware •Servers •Storage •Switches •Data centers or Customer Premises Ref: ETSI NFV white paper
  6. 6. Network Functions Virtualization • Initiated by an international consortium of Tier 1 service providers • European Telecommunications Standards Institute (ETSI) • ETSI NFV white paper - November 2012 • Goal: Address the problem of expensive, proprietary, and short-lived systems by: • Decoupling hardware and software • Leveraging standard IT virtualization technology • Using open APIs and an ecosystem of suppliers to build solutions
  7. 7. ETSI NFV ISG >230 member companiesRef: NFV, An Insider’s Perspective, Marc Cohn, Sept 2013, Ref: ETSI NFV ISG Publishes Second Release of Documents, Don Clarke, Phase 1 Organization Structure
  8. 8. ETSI NFV ISG Specifications • GS NFV 001 – Use Cases • GS NFV 002 – Architectural Framework • GS NFV 003 – Terminology for Main Concepts • GS NFV 004 – Virtualization Requirements • GS NFV-MAN 001 – Management and Orchestration • GS-NFV-INF – NFV Infrastructure • GS NFV PER 002 – Proofs of Concept • and more:
  9. 9. NFV Benefits •Cost Savings •Economies of Scale •COTS hardware produced in high volume •Order of magnitude more servers shipped than routers •Consolidation •Reduced equipment costs •Reduced power consumption
  10. 10. NFV Benefits •Increased service velocity •Increased service agility •Increased pace of innovation
  11. 11. NFV Enabling Technologies • Standard commodity hardware • Virtualization • Cloud Computing
  12. 12. Standard Commodity Hardware •Industry standard servers (e.g., x86), switches and storage •High volume – millions •Interchangeable subcomponent market •Economies of scale
  13. 13. Virtualization Ref:
  14. 14. Cloud Computing • On-demand network access to computing capabilities • Shared pool of computing resources • Rapid elasticity • Metering capability Ref: The NIST Definition of Cloud Computing, NIST SP 800-145
  15. 15. Ubiquitous, convenient, on-demand network access to computing capabilities
  16. 16. Shared Pool of Computing Resources
  17. 17. Rapid Elasticity
  18. 18. Metering
  19. 19. What do we have so far? •Virtual Network Appliances => CapEx and OpEx savings •Open Standards => Ecosystem of virtual appliance suppliers •Cloud Infrastructure => On-demand creation of any number of appliances •What is missing? • Orchestration
  20. 20. Orchestration
  21. 21. Service Orchestrator
  22. 22. Orchestration • Virtual Network Function Management: • Deploy, instantiate, monitor, scale, fault diagnosis, healing, terminate • Service Orchestration: • Create, activate, and manage whole network services that may consist of an interconnection of VNFs and physical devices • Resource Orchestration: • Coordinate with Virtual Infrastructure Manager to orchestrate resource allocation
  23. 23. ETSI NFV Reference Architectural Framework REF: ETSI GS NFV 002 v1.2.1 NFV Architectural Framework
  24. 24. Ensemble Open Service Architecture™ Ensemble OSA™ is the industry’s first open architecture for software-defined services Optimizing the Service Delivery Lifecycle The Ensemble Service Orchestrator is an open, extensible, carrier-class NFV service lifecycle management and orchestration system that coordinates virtual resources and physical network elements to create, activate, and assure services using one or more virtual network functions. The award-winning ESO is designed to help communication service providers (CSPs) and mobile operators achieve the greatest cost savings and respond quickly and appropriately for optimized revenue generation. ESO helps providers and operators achieve greatest profitability.
  25. 25. NFV Status • Proof of Concept trials conducted by many service providers • British Telecommunications: vBRAS • Deutsche Telekom: vIMS • Orange Silicon Valley: vEPC • Telefonica: DPI, CGNAT • Virtualization of Mobile Core Network and IMS seem to be the most popular applications. • OPNFV – Open Platform for NFV
  26. 26. Carrier Networks are on the cusp of a paradigm shift
  27. 27. Proprietary hardware appliances are being replaced with virtual appliances.
  28. 28. Improved Service Velocity and Agility
  29. 29. Cost Savings
  30. 30. Reduced Environmental Impact
  31. 31. Innovation unshackled
  32. 32. ETSI is developing open specs for NFV
  33. 33. Orchestration is key to service provisioning