ONF WHITE PAPER Software-Defined Networking: The New Norm for Networks

sdn

Fundation O N. Software-defined networking: The new norm for networks[J]. ONF White Paper, 2012, 2: 2-6.

executive summary

一顿夸SDN,一顿说传统网络的不足

The need for Net Netwrok Architecture

过去网络:南北流量
现在：东西流量
这使得需要一个新的网络架构才能潢足需求:移动设备增多，云服务，大数据大带宽

Limitation of current networking technologies

传统网络对很多应用有限制

Introducing Software-Define Networking

这种新的架构：三层（application，Controller，infrastracture）

Inside OpenFlow

openflow协议，用于控制controller与infrastructure的交互

Benefits of OpenFlow-Based Software-Defined Networks

• control network device more easily
• automated management reduce overhead
• program network makes higher rate of innovation
• simplely define policy in controller reduce expences
• more granular network control
• 应用可根据检测的带宽对自身进行调整，提高用户体验

Conslusion

SDN好！！！