电力信息网络的服务质量策略

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。

QUALITY OF SERVICE POLICY OF POWER INFORMATION NETWORK

Under limited network resources, how to make the best of existing network bandwidth to ensure key business transmission in normal rate? According to Zhaoqing power information network structure and business data flow on it, the business data flow is assorted, the key business data flow is defined, the different control policy is used in the network core layer, distribution layer and linked layer. Using CEF (Cisco express forward) in the network core layer equipment we can avouch for data packet transmission best effort.Using CAR (control access rate) we can ensure bandwidth of key business, and using FIFO (first in first out) and RED (random early detection) to optimize network QoS (quality of services) in the network distribution layer equipment.Using WFQ (weighted fair queuing) in the network linked layer equipment we can proceed to deal with network line jam control.