云网融合PCEP应用及端到端保障方案

PCEP application in cloud-network convergence and end to end traffic assurance scheme

随着云计算、大数据等新技术的蓬勃发展以及通信基础设施的不断升级,国内三大运营商均提出以智能牵引网络转型,构建集中控制,灵活编排的云网基础架构的发展战略。PCEP作为一种广泛应用于SDN架构的路径计算协议,往往应用于解决复杂网络环境跨层、跨域约束路径的计算。从探讨PCEP在云网融合场景应用的角度出发,提出了一种基于PCEP的流量端到端保障方案,可实现在本地IP环境下,面向连接的网络通信及端到端业务保障,有助于提升运营商对网络的实时感知、敏捷响应、智能分析等能力,满足通信资源可全局调度、能力可全面开放、架构可灵活调整的运维管理需求。

With the booming development of new technologies such as cloud computing,big data and the continuous upgrading of communication infrastructure,the major domestic ISPs have proposed the development strategy of building a centralized control and flexible cloud network infrastructure under the trend of intelligent-traction network transformation.As a path calculation protocol widely used in the existing SDN architecture,PCEP protocol was often used to solve the problem of cross-layer and cross-domain path computing under complex network environment.The application of PCEP protocol in cloud-network convergence scenario was discussed and an end-to-end traffic guaran-tee scheme was introduced based on PCEP protocol which could ensure the connection-oriented network communi-cation and make end-to-end service guarantee in native IP environment.It helps to improve the operators'ability of real-time perception,agile response and intelligent analysis of the network and meets the operation and maintenance management requirements such as global scheduling of communication resources,comprehensive opening of capa-bilities and flexible architecture.