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Network Function Virtualization Orchestration LI
Network functions virtualization (NFV) decouples network functions from proprietary hardware appliances and implements them as software virtual network functions (VNFs) that run on standard commercial off-the-shelf (COTS) servers. This allows network functions to be consolidated on shared hardware and provides benefits such as reduced costs, increased flexibility and service agility, and faster innovation. The European Telecommunications Standards Institute (ETSI) is developing open standards for NFV. Orchestration is a key enabling technology that manages the lifecycle of VNFs and coordinates their placement with physical network resources to automate service provisioning.
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Network Function Virtualization Orchestration LI
- 1. NETWORK FUNCTIONS VIRTUALIZATION Symposium onComputer Science and Engineering University of Massachusetts at Amherst May 2, 2015 K. ARVIND https://www.linkedin.com/in/karvind KRITHI60
- 2. Plan of thePresentation • Problem • Solution – Network Functions Virtualization • Standards • Benefits • Enabling Technologies: Virtualization and Cloud • Orchestration • Conclusion
- 3. Carrier Networks Variety ofNetwork 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. Problem •Variety of networkappliances •Proprietary hardware •Expensive •Service deployment slowed down •Space •Power •Rapid obsolescence •Constrain innovation Ref: ETSI NFV white paper
- 5. Solution: NFV •Network FunctionsVirtualization • Standard high volume hardware •Servers •Storage •Switches •Data centers or Customer Premises Ref: ETSI NFV white paper
- 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. ETSI NFV ISG >230member companiesRef: NFV, An Insider’s Perspective, Marc Cohn, Sept 2013, www.sdxcentral.com Ref: ETSI NFV ISG Publishes Second Release of Documents, Don Clarke, www.cablelabs.com Phase 1 Organization Structure
- 8. ETSI NFV ISGSpecifications • 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: http://www.etsi.org/technologies-clusters/technologies/nfv
- 9. NFV Benefits •Cost Savings •Economiesof Scale •COTS hardware produced in high volume •Order of magnitude more servers shipped than routers •Consolidation •Reduced equipment costs •Reduced power consumption
- 10. NFV Benefits •Increased servicevelocity •Increased service agility •Increased pace of innovation
- 11. NFV Enabling Technologies •Standard commodity hardware • Virtualization • Cloud Computing
- 12. Standard Commodity Hardware •Industrystandard servers (e.g., x86), switches and storage •High volume – millions •Interchangeable subcomponent market •Economies of scale
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- 14. Cloud Computing • On-demandnetwork 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. Ubiquitous, convenient, on-demand networkaccess to computing capabilities
- 16. Shared Pool ofComputing Resources
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- 19. What do wehave 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
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- 22. Orchestration • Virtual NetworkFunction 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. ETSI NFV ReferenceArchitectural Framework REF: ETSI GS NFV 002 v1.2.1 NFV Architectural Framework
- 24. Ensemble Open ServiceArchitecture™ 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. http://www.overturenetworks.com/products/network-virtualization/ensemble-service-orchestrator-eso/
- 25. NFV Status • Proofof 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
- 27. Carrier Networks areon the cusp of a paradigm shift
- 28. Proprietary hardware appliancesare being replaced with virtual appliances.
- 29. Improved Service Velocityand Agility
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- 33. ETSI is developingopen specs for NFV
- 34. Orchestration is keyto service provisioning