作　　者： (张超）; (王建辉）;

机构地区： 南京地铁建设有限责任公司

出　　处： 《通信与广播电视》 2017年第2期24-29,共6页

摘　　要： 在地铁通信系统建设中，建设方和运营方对计算机网络系统的可靠性有很高的要求。本文对于当下地铁通信系统中广泛运用的三层复合型计算机网络系统，在设计、施工、调试的过程中，提出了几项提高系统可靠性的建议方案。首先，在设计系统方案时，本文阐述了可增加链路备份以提高系统可靠性。其次，在系统工程建设中，针对物理媒介光纤和交换机设备上可能影响传输质量的因素，结合笔者在工程实践中的经验，提出几项优化措施以提高可靠性。再次，系统构建完成后，为了保障网络运行的安全、稳定，在每一台操作终端加装防火墙，并采取一些网络安全防护措施。 During the construction of metro communication system, both the construction unit and the operator have higher requirements for the reliability of computer network system. Focusing on the 3-tier complex computer network system which is widely applied in current metro communication system, this paper puts forward some suggestions of improving system relia- bility in the process of design, construction and debugging. First, the system reliability may be improved by increasing link backup. Second, considering the factors that may affect the transmission quality such as physical medium optical fiber and switch equipment, some optimization measures will be taken to improve the reliability during the system construction. Finally, after the system configuration finished, a fire wall should be installed at each operation terminal and network security measures must be taken to ensure the safe and stable network operation.

关 键 词： 三层结构 链路备份 光纤接续 网络安全