Network Functions Virtualization - Concepts and Architecture
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This document discusses Network Functions Virtualization (NFV) concepts and architecture. It motivates NFV by describing the negative consequences of using proprietary hardware appliances and outlines how virtualization addresses this through software implementation. It then defines key virtualization concepts like virtual machines, hypervisors, and containerization. The document details NFV principles like service chaining and management/orchestration frameworks. It lists benefits like reduced costs and requirements like portability. Finally, it presents NFV's reference architecture and suggests further reading on modern networking foundations.
Network Functions Virtualization - Concepts and Architecture
- 1. Network Functions Virtualization: Concepts and Architecture Mustufa Sir
- 2. Index 1. BACKGROUND AND MOTIVATION FOR NFV 2. Virtual Machines 3. NFV CONCEPTS 4. NFV BENEFITS AND REQUIREMENTS 5. NFV REFERENCE ARCHITECTURE Mustufa Sir
- 3. 1. BACKGROUND AND MOTIVATION FOR NFV “NFV white paper, Network Functions Virtualization: An Introduction, Benefits, Enablers, Challenges & Call for Action” Mustufa Sir
- 4. Negative consequences of using hardware: • Require additional different types of hardware appliances. • Finding the space and power to accommodate. • New hardware means additional capital expenditures. • Skills necessary to design, integrate, and operate increasingly complex hardware. Mustufa Sir
- 5. to the rescueMustufa Sir
- 6. 2. Virtual Machines Hardware Virtualization • The use of software to partition a computer’s resources into separate and isolated entities called virtual machines. Virtual Machine (VM) • One instance of an operating system along with one or more applications running in an isolated partition within the computer. Mustufa Sir
- 7. The Virtual Machine Monitor • The solution that enables virtualization is a virtual machine monitor (VMM), or commonly known today as a hypervisor. This software sits between the hardware and the VMs acting as a resource broker. • The number of guests that can exist on a single host is measured as a consolidation ratio. Mustufa Sir
- 8. • Commercial hypervisor offerings by companies such as VMware and Microsoft are widely used, with millions of copies having been sold. • A key aspect of server virtualization is that, in addition to the capability of running multiple VMs on one machine, VMs can be viewed as network resources. Mustufa Sir
- 9. There are two types of hypervisor Mustufa Sir
- 11. 3. NFV CONCEPTS Virtualization of network functions by implementing these functions in software and running them on VMs. Error control Flow control Access control Multiplexing and Demultiplexing Encryption and decryption Mustufa Sir
- 12. Technology can be applied to network-based devices, including the following: 1. Network function devices 2. Network related compute devices 3. Network attached storage Mustufa Sir
- 13. Mustufa Sir
- 14. Simple Example of the Use of NFV Mustufa Sir
- 15. NFV Principles • Three key NFV principles are involved in creating practical network services: 1. Service chaining 2. Management and orchestration (MANO) 3. Distributed architecture Mustufa Sir
- 16. High-Level NFV Framework Mustufa Sir
- 17. 4. NFV BENEFITS AND REQUIREMENTS Reduced CapEx Reduced OpEx Mustufa Sir
- 18. NFV Requirements 1. Portability/interoperability 2. Performance tradeoff 3. Migration and coexistence with respect to legacy equipment 4. Management and orchestration 5. Automation 6. Security and resilience 7. Network stability 8. Simplicity 9. Integration Mustufa Sir
- 19. 5. NFV REFERENCE ARCHITECTURE Mustufa Sir
- 20. Reference Foundations of Modern Networking: SDN, NFV, QoE, IoT, and Cloud by William Stallings Mustufa Sir