铁路通信信号工程技术2025，Vol.22Issue(6)：71-76,6.DOI:10.3969/j.issn.1673-4440.2025.06.011
数据通信骨干网链路时延抖动越限案例简析
Case Study of Exceeding Delay and Jitter Limits of Data Communication Backbone Network Link
摘要
Abstract
According to the quality standards of the railway data communication backbone network,detected end-to-end delay and jitter between nodes is required to be within 1ms.In the daily monitoring of inter-device delay and jitter performance,the delay and jitter of nodes such as Harbin,Shenyang,Shanghai,and Nanchang exceed the limit of 1ms.Upon analyzing the network architecture,it is found that abnormal node devices are all connected to the backbone data network core devices(CR02 devices)of Shanghai Dispatching Station.Upon checking the device configurations,it is discovered that the CR02 devices of Shanghai Dispatching Station did not introduce the MPLS TE Tunnel into Interior Gateway Protocol(IGP)for deployment.Moreover,the router devices operated in the load-balance packet mode,which led to the delay differences among different forwarding links of detection messages in the presence of multiple routing paths,and the resultant delay and jitter deviation of these links.The measures of modifying the router device configuration,and optimizing the message path,are used to reduce the inter-device link delay and jitter,and improve the security and reliability of network equipment.关键词
数据通信网/网络质量/时延抖动/逐包负载分担/逐流负载分担Key words
data communication network/network quality/delay and jitter/load-balance packet/load-balance flow分类
交通工程引用本文复制引用
梅靖..数据通信骨干网链路时延抖动越限案例简析[J].铁路通信信号工程技术,2025,22(6):71-76,6.基金项目
中国铁路上海局集团有限公司2024年度科研立项开发课题(示范性推广)项目计划(2024120) （示范性推广）
