【摘要】 系统地介绍了以太网的基本概念、介质接入控制和物理层准规范、以太网信号的帧结构、网络的硬件设备、网络的组成及主要性能,以及以太网信号在PDH、SDH/SONET中的传输等等。本部分主要介绍以太网的交换技术,包括网桥的概念、交换的工作模式,及交换机的功能、性能参数等。更多还原

【Abstract】 The papeer systematically introduces the basic concept of Ethernet,Ethernet media access con - trol,physical layer performance standard,Ethernet signal frame structure,network hardware equipment ,net - work contitution and main performances and Ethernet signal transmitted over PDH,SDH/SONET et al.This part mainly introduces the switching technology of Ethernet,including the concept of bridges,pattern functions,performance,paramenters of exchanges et al.更多还原