基于NTP的网络时间服务系统的研究

随着计算机网络的飞速发展,网络中服务器和工作站的时间无序问题日益突出。同时,很多应用领域对时间同步的需求又很迫切,比如网络基础设施、网络安全、系统审计和账户结算等方面。因此,建立基于NTP的网络时间服务系统成为目前解决这些问题的合理选择。文章就系统的层状结构、时间延迟和时钟偏移的测量、消息格式以及实现机制进行了介绍和讨论。

A Network Time Service System Based on NTP

With the fast growth and development of computer networks,the time disorder of servers and workstations in networks becomes an obvious problem.There is an urgent demand for synchronized time in critical network infrastruc-ture,network security,system auditing and usage accounting.In the paper,an NTP-based network time service system is introduced to achieve time synchronization in a whole network.The paper firstly presents the NTP-based time service hi-erarchy,then discusses the measurement of time delays,clock offsets and the message format,and finally analyzes the system implementation.