IP网络未来演进技术白皮书 4.0

IP网络未来演进技术白皮书4.0——服务感知网络（SAN） 中兴通讯股份有限公司 IP网络未来演进技术白皮书4.0——服务感知网络(SAN) 中国信息通信研究院中国电信研究院中国联通研究院北京交通大学 ©2024ZTECorporation.Allrightsreserved. 2024版权所有中兴通讯股份有限公司保留所有权利 本文档著作权由中兴通讯股份有限公司享有。文中涉及中兴通讯股份有限公司的专有信息，未经中兴通讯股份有限公司书面许可，任何单位和个人不得使用和泄漏该文档以及该文档包含的任何图片、表格、数据及其他信息。 目录 1前言........................................................................................................................12IP网络未来演进趋势.................................................................................................13SAN关键场景及需求................................................................................................23.1算网融合.......................................................................................................23.1.1算网融合下的广域服务部署与协同场景................................................23.1.2算网融合下广域服务协同的需求与挑战................................................83.2算网一体调度和运维......................................................................................93.2.1OTT和智能边缘服务调度主要问题和痛点..........................................93.2.2算网一体调度和运维场景和需求.......................................................103.2.3算网一体调度和运维主要挑战..........................................................113.3网络能力和业务需求协同.............................................................................133.3.1未来IP网络中业务和网络协同..........................................................133.3.2业网协同应用场景.............................................................................163.3.3业网协同功能的设计需求..................................................................173.4智算网络端网协同.......................................................................................193.4.1网络多路径控制问题及需求................................................................193.4.2拥塞控制问题及需求.........................................................................204SAN整体架构及设计理念........................................................................................214.1算网一体流量工程.......................................................................................214.1.1算网一体TE三要素..........................................................................224.1.2算网一体TE转控分离技术架构.........................................................23 4.1.3算网一体TE部署和应用演进............................................................244.2SAN核心设计理念.......................................................................................254.2.1独立语义服务标识.............................................................................264.2.2位置和归属无关................................................................................284.2.3端到端服务.......................................................................................294.2.4数据面轻量化...................................................................................294.2.5控制面极简化...................................................................................304.3SAN参考架构..............................................................................................314.4SAN与现有技术的GAP分析.......................................................................324.4.1基于DNS和GSLB（全局负载均衡）服务调度模式............................324.4.2基于ICN的服务调度........................................................................335SAN关键技术........................................................................................................345.1HFC（HybridFunctionChain）混合功能链..................................................345.1.1HFC技术特征与内涵.........................................................................345.1.2HFC系统架构...................................................................................355.1.3基于SRv6的HFC技术....................................................................365.2FSP(FlexibleSchedulingPolicy)灵活调度策略.............................................365.2.1支持多种约束条件的TE计算............................................................365.2.2业务调度和负载均衡技术..................................................................375.3FS-OAM(Full-StackOAM)全栈算网OAM................................................395.3.1网络和计算可观测现状......................................................................395.3.2FS-OAM关键目标和技术.................................................................39 5.4端到端网络业务协同服务系统......................................................................435.4.1基于SAN的增强型业务控制层..........................................................435.4.2业网协同功能层的接口需求...............................................................445.5基于统一标识的智算端网协同......................................................................455.5.1基于统一标识的智算端网协同架构.....................................................455.5.2基于统一标识的多路径控制...............................................................465.5.3基于统一标识的拥塞控制参数适配.....................................................466SAN样机及测试总结..............................................................................................476.1SAN算力路由样机试点................................................................................476.2SAN服务治理测试验证......................................................