Network Functions Virtualization Concepts and Architecture

1. Network Functions Virtualization:
Concepts and Architecture
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2. Index
1. BACKGROUND AND MOTIVATION FOR NFV
2. Virtual Machines
3. NFV CONCEPTS
4. NFV BENEFITS AND REQUIREMENTS
5. NFV REFERENCE ARCHITECTURE
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3. 1. BACKGROUND AND MOTIVATION FOR NFV
“NFV white paper, Network Functions
Virtualization: An Introduction, Benefits,
Enablers, Challenges & Call for Action”
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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.
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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.
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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.
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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.
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9. There are two types of hypervisor
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10. Container Virtualization
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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
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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
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13. Mustufa Sir

14. Simple Example of the Use of NFV
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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
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16. High-Level NFV Framework
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17. 4. NFV BENEFITS AND REQUIREMENTS
Reduced
CapEx
Reduced
OpEx
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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
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19. 5. NFV REFERENCE ARCHITECTURE
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20. Reference
Foundations of Modern Networking: SDN,
NFV, QoE, IoT, and Cloud
by William Stallings
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21. Thank you
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