Over the past couple of years, software-defined networking (SDN) has emerged as a strong alternative to traditional networking approaches in the areas of WAN, data center networks, and network overlay ...

当时的互联网，已经历经了30多年的高速发展，从最初的小型专用局域网络，变成了空前庞大和复杂的世界级网络。 网络规模的持续扩张，网络设备的不断增加，超过了早期设计的承受能力，也使得网络维护变得举步维艰。 于是，专家们开始探讨未来网络的可能 ...

SDN诞生于美国GENI项目资助的斯坦福大学Clean Slate课题，斯坦福大学Nick McKeown教授为首的研究团队提出了Openflow的概念用于校园网络的试验创新，后续基于Openflow给网络带来可编程的特性，SDN的概念应运而生。 2006年，SDN诞生于美国GENI项目资助的斯坦福大学Clean Slate ...

在检查OpenFlow和SDN之间的差异时，要考虑到它们在基础设施中的位置。OpenFlow是一种技术——技术服务SDN，因为 它连接着控制权和网络设备，用户或企业看不到。相反，SDN是企业——技术界面，会先向用户和企业提供服务，然后再把服务转换成控制权可翻译的操作。

OpenFlow is a Software-Defined Networking (SDN) protocol used for southbound communications from an SDN controller to and from a network device. OpenFlow is the protocol used to inform the topology of ...

OpenFlow now accommodates multiple forwarding tables, but how do the controller and switch agree on what those tables are supposed to do? Enter Table Type Patterns (TTP), an ONF Since its inception, ...

When getting to know software defined networking, you’ll encounter a number of terms that are used in conjunction with the technology. Some of the terms are unique to SDN, while others describe ...

OpenFlow 2.0 doesn't formally exist yet, but one possible shape of the protocol — a more flexible take on packet switching — is starting to form. A research paper outlines the idea and sums it up ...