帧中继业务互扰问题的分析与解决措施  

Analysis of and Solution to Mutual Interference among Traffic over Frame Relay Networks

作　　者：林习良[1] 周锦标[1] 赵乾宏[1] 

机构地区：[1]中国卫星海上测控部,江苏江阴214431

出　　处：《电讯技术》2015年第3期291-297,共7页Telecommunication Engineering

摘　　要：帧中继网络采用比特透明数据业务部件传输同步数据,采用虚拟路由器部件传输IP数据,针对网络运行过程中出现的不同传输链路的IP数据相互影响和IP数据影响同步数据现象,测试发现与带宽利用率有关。分析了优先级相同时用户数据报协议(UDP)数据比传输控制协议(TCP)数据更易受数据流量影响和入口数据流量过大的原因,以及帧中继不同类型业务发送优先级的对应关系,通过接入限速控制数据流量,并根据不同用户数据特点与传输要求设置相应优先级,问题得到有效解决。实际应用表明,基于限速策略和区分发送优先级的解决措施能够有效防止不同业务相互间的影响,确保重要数据稳定可靠地传输,可为解决其他类似问题提供参考。Synchronous data is transmitted over frame relay networks by bit transparent data service compo- nent while IP data is transmitted by virtual router component. It＇ s found that IP data of different transmis- sion links influences each other or IP data influences synchronous data in network running. Test shows that the problem is related to the utilization of network bandwidth. The reason why user data gram protocol （UDP） data is more likely to be affected by traffic flow rate than traffic control protocol（TCP） data in same priority and why traffic flow incoming from the remote node is too heavy is analyzed. The correspond- ing relationship of transfer priority of different traffic types over frame relay networks is also analyzed. As rate limitation is employed to control the traffic flow rate and transfer priority is set properly according to the characteristics and transmission requirements for different traffic types, problems are solved. Applica- tion results demonstrate that solutions based on rate limitation and transfer priority can effectively prevent mutual interference among different traffics and ensure reliable transmission of important data. It provides a reference for solving other similar problems.

关 键 词：数据传输网 同步数据 帧中继 虚拟路由器 优先级设置 

分 类 号：TN919.22[电子电信—通信与信息系统]