White Paper:
http://portal.etsi.org/nfv/nfv_white_paper.pdf
Relationship between NFV and SDN:
"Network Functions Virtualisation is able to support SDN by providing the infrastructure upon which the SDN software can be run."
"approaches relying on the separation of the control and data forwarding planes as proposed by SDN can enhance performance"
Key Challenges:
1. portability: load and execute virtual apps, 需要统一接口
2. computing performance: 相当于“独立显卡”变成“集成显卡”,性能(e.g. latency, throughput, processing overhead, etc)可能下降
3. security
4. resilience to errors
Use Case:
http://www.etsi.org/deliver/etsi_gs/NFV/001_099/001/01.01.01_60/gs_NFV001v010101p.pdf