华为SDN解决方案 - 图文

SDN的产品化实践 ——华为SDN解决方案

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1 2 3 业界SDN思路简介 华为企业网络SDN愿景 SDN最佳实践与技术创新 1

什么是SDN？

ONF：SDN is a new approach to networking and its key attributes include: separation of data and control planes; a uniform vendor-agnostic interface between control and data planes; a logically centralized control plane; and slicing and virtualization of the underlying network.

Gartner：Software-defined networking (SDN) is a new approach to designing, building and operating networks that focuses on delivering business agility while lowering capital and operational costs. It is far more than just a new set of APIs designed to replace command line interfaces for managing individual devices.

VMware: VMware Software Defined Networking (SDN), available today, helps solve the data center networking challenge. which virtualizes the network and creates logical networks that meet the agility, performance and scale requirements of virtualized applications and data.

SDN Software-Defined Networking 开放API 网络虚拟化 SDN 控制面与数据面解耦 解决实际问题 Google: As networking systems scale, whether it be growth in bandwidth or the number of users being served, one has to Overlay worry about manageability, cost-efficiency, robustness and availability of the network fabric. SDN allows you do tackle many of these problems.

Verizon：Verizon has deployed SDN as an overlay network for video distribution services. For scale and flexibility, the SDN framework must support multiple VM domains, multiple network domains, and multiple services/applications with open, standard interfaces.

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SDN主流技术路线

OpenFlow 技术架构： 1、转发与控制分离架构； 2、标准化转发面； 优点： 1、易于流量调度； 2、开放生态链； 标准网络开放 技术架构： 1、开放网络设备能力； 2、标准化API； 优点： 1、充分利用现有设备； 2、快速实现； Overlay: 网络叠加技术 技术架构： 1、网络边缘软件化； 2、Overlay技术； 优点： 1、与物理网络解耦； 2、灵活部署； NFV(Network Function Virtualization) 技术架构： 1、网关功能软件化； 2、归一化平台； 优点： 1、快速业务供应； 2、降成本； NICIRA 已经被VMware收购 3

ONF所定义的SDN架构

ONF定义的SDN架构

Software-Defined Network Architecture

OpenFlow实际部署图 APP1 APPn Thin Secure SW Channel OpenFlow 交换机 Controller Switching Flow Table HW OF Switch OF Switch OF Switch OF Switch Source: ONF white paper -- Software-Defined Networking (SDN): The New Norm for Networks

OF: OpenFlow 特征：控制转发分离、集中控制器、网络开放可编程、转发面抽象 4