5G承载网技术和优化组网

发布时间:2018-02-11 作者:张宝亚 阅读量:

[摘要] 大带宽、强路由、高可靠、L3到边缘、25 GE/50 GE/100 GE低成本光模块是5G承载网的基础要求。灵活以太网(FlexE)、分段路由(SR)、以太网虚拟专用网络(EVPN)、IPv6、设备虚拟化、高精度时钟是5G承载设备应具备的关键技术。认为承载网存在4个方面演进趋势:网络扁平化;管理、控制、转发隔离;传统网管向管控融合的SDN架构演进;4G/5G统一承载。

[关键词] SR;Flex-E;网络切片;EVPN;光模块

[Abstract] Large bandwidth, strong routing, high reliability, L3 to edge, 25 GE/50 GE/100 GE low cost optical modules are the basic requirements of 5G bearing network. Flex Ethernet (FlexE), segment routing (SR), Ethernet virtual private network (EVPN), IPv6, virtualization of devices and high precision clock are the key technologies for 5G bearing equipments. Four evolution trends are proposed in this paper: flat network; isolation between management plane, control plane and forwarding plane; evolution of soft-defined network (SDN) architecture from traditional network to the management and control integrated network; 4G/5G unified bearing.

[Keywords] SR; FlexE; network slicing; EVPN; SDN; optical module

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