Secondly, from the viewpoints of Metro Carrier Ethernet and telecommunication management network, the requirement analysis and the design of the management services, function moduls and management information model of the VPN network management system for Metro Carrier Ethernet are performed. 从城域电信级以太网角度以及电信管理网角度对城域电信级以太网VPN网络管理进行了分析，确定了城域电信级以太网VPN网络管理的管理业务、管理功能以及管理信息模型。
Analysis of Shared Ethernet real-time performance, and qualitative analysis of the transmission delay and network traffic. Analysis of interactive Ethernet real-time performance and compute communication delay. Analysis of the Ethernet communication protocol for real-time impact. 对共享式以太网进行实时性分析，并定性分析传输延迟与网络流量的关系；对交互式以太网进行实时性分析，计算通信延时；分析以太网中通信协议对实时性的影响。
The portable system can be via Ethernet port and Ethernet network connected to ships, ships from the various navigation equipment to receive navigation information analysis and processing in the system and optimize the navigation data to the operator. 这套便携式系统可以通过以太网口和舰艇的以太网络相连，从中接收舰艇中各种导航设备的导航信息，在系统中进行分析处理并将最优化的导航数据提供给操作人员。
This paper briefly expounds the limitation of traditional Ethernet and the features of new-type Ethernet techniques and, connecting with the practice of many years ' network optimization of Fuzhou University, makes analysis on and exploration into the principles, tactics and methods of network optimization. 文章简要阐述了传统以太网的局限性和新型以太网技术的特点，并结合福州大学图书馆多年的网络优化实践，对网络优化原则、策略、方法等进行了分析和探讨。
With the development of Gigabit Ethernet and other high-speed network technology, it becomes very hard to collect all the packets, And the analysis of network behaviors becomes very hard due to the large volume of traffic log. 同时随着吉比特以太网和其他高速网络技术的发展，要采集到全部的网络流量变得非常困难，大量的流量日志也使网络行为分析变得十分困难。
