CCNP Enterprise Core (350-401) Cisco Software Defined Networking

Network Functions Virtualisation

Network Functions Virtualisation (NFV) is an architectural framework created by the European Telecommunications Standards Institute (ETSI)

It defines standards to decouple network functions from proprietary hardware-based appliances and have them ran in software instead on standard servers.

It defines how to manage and orchestrate the network functions.

Network function refers to a function performance by a physical appliance such as a firewall or router function.

Some benefits of network functions virtualisation are similar to the benefits of server virtualisation:

  • Reduced capital expenditure (capex) and operational expenditure (opex) through reduced equipment costs and efficiencies in space, power and cooling
  • Faster time to marker because virtual machines and containers are easier to deploy than hardware
  • Improved return on investment from new services
  • Ability to scale up and down in capacity and demand
  • Openness to the virtual appliance market and pure software networking vendors
  • Opportunities to test and deploy new innovative services virtually and with low risk

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