Abstract: To improve the resource management as well as operation and maintenance efficiency of the railway data communication network, this paper studies the resource management mechanism for the data communication network. NetFlow and SNMP protocols are used to achieve automatic data collection on the equipment resources, IP resource utilization situation, service online status and service behavior characteristics of the railway data communication network. Test environment design, resource management system development and deployment as well as field testing are conducted to verify the resource management mechanism for railway data communication network based on the NetFlow and SNMP protocols. The proposed resource management system can profile the service flow, and describe such service attributes as source port, destination port, protocol, traffic volume, service type and location. It can achieve the dynamic monitoring of IP address resources, simplify the statistical calculation, analysis and allocation of IP addresses, and improve the utilization efficiency of IP resources.

Key words: data communication network, resource management, NetFlow, SNMP, system design, traffic analysis

摘要： 为提高铁路数据通信网资源管理和运维效率，对数据通信网资源管理机制进行研究，采用以NetFlow、SNMP协议自动采集铁路数据通信网设备资源、IP资源运用情况、业务在线状态及其业务行为特征数据。通过测试环境设计、资源管理系统研发、部署及现场测试，验证基于NetFlow和SNMP协议的铁路数据通信网资源管理机制的可行性。资源管理系统可对业务流进行画像，描绘出业务的源、目的端口、协议、流量大小、业务种类、归属位置等属性，可实现对IP地址资源的动态监测，简化IP地址统计、分析和分配，提高IP资源的使用效率。

关键词: 数据通信网, 资源管理, NetFlow, SNMP, 系统设计, 流量分析