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如何在有限的网络资源环境下 ,充分利用现有带宽 ,保障关键任务的正常速率传输 ?文中针对肇庆电力信息网络结构及承载的业务 ,对业务流进行分类 ,定义关键业务流 ,在网络核心层、分布层和接入层采用不同的服务质量 (QoS)控制策略。在核心层设备上 ,开启Cisco的快速交换 (CEF)功能 ,保证数据包的最大努力传输 ;在分布层设备上 ,采用Cisco的承诺接入速率 (CAR)技术来保障关键业务的带宽 ,并运用先进先出 (FIFO)队列技术结合早期随机检测 (RED)拥塞 ,避免控制机制对链路进行QoS优化 ;在接入层设备上 ,利用加权平均队列 (WFQ)技术对窄带的链路进行拥塞控制。
How to make full use of the existing bandwidth in the limited network resources environment and ensure the normal rate transmission of mission-critical? In this paper, we classify the business flows according to the structure of Zhaoqing Power Information Network and the services carried by them, define the key business flows, , Distribution and access layers using different quality of service (QoS) control strategy. On the core device, Cisco’s Fast-Switching (CEF) feature is turned on to ensure the best effort packet delivery; on the distribution-level device, Cisco’s Committed Access Rate (CAR) technology is used to secure critical business bandwidth and leverage The first-in-first-out (FIFO) queuing technology combined with early random detection (RED) congestion avoids the control mechanism optimizing the QoS of the link. On the access layer equipment, the weighted average queue (WFQ) .