思科IOS简介翻译

思科互联操作系统
Introduction
简介
A router, like a computer, needs an operating system to run. Without an operating
system, a router is just a collection of hardware. The operating system used by Cisco
routers is called the Cisco Internetwork Operating System, or IOS. The Cisco IOS is
designed to move information between networks in an enterprise setting.
路由器，和电脑一样，需要运行操作系统。没有操作系统，路由器不过是一对硬件的集合。思科路由器使用的操作系统叫做思科Internet网络操作系统，或者缩写为IOS。思科IOS>的设计目的是在企业环境的网络间传递信息。
The information moved between networks or segments of a given network is the raw
material data frames are formed from. The process of correctly selecting a path for a
given data frame then forwarding that frame based on its network layer destination
address is called routing. The Cisco IOS controls the processes and parameters associated
with routing.
***。给指定数据帧选定正确的路径然后对其进行转发是建立在网络层目的地址上的，这个过程叫做路由。思科IOS控制着与路由相关的过程与参数。
The Cisco IOS is a text-based network operating system. It is intended for use by system
administrators and others who design, build, and support data and voice networks. In
contrast, the Windows family of operating systems is graphics-based and designed for use
on a personal computer by an end user.
思科IOS是一个基于文本的网络操作系统。这个系统针对的用户是系统管理员以及设计、建设、维护数据和语音网络的人们。与之相反，Windows家族的操作西哦它能够是基于图形>的，其设计针对的是使用个人电脑的终端用户。
The Cisco IOS, like any other operating system, uses files for configuration and memory
for storage. Cisco products do not have hard drives, unlike computer-based network
operating systems. Cisco routers use flash memory and nonvolatile RAM (NVRAM) for
permanent storage. RAM stores information used by the router when in an operational
state.
思科IOS，如同其他操作系统一样，使用文件来进行配置，使用内存在进行存储。思科产品没有硬盘，这和基于电脑的网络操作系统不同。思科路由器使用闪存（flash memory）和
非易失性随机存储器进行永久性保存。随机存储器用来存放操作状态下的信息。
Flash memory can be loosely compared to hard drive storage space. Flash memory is
where the operating system resides. NVRAM is used to store configuration and registry
settings. Routers use a registry loosely comparable to the Windows registry to control
hardware and bootup parameters.
闪存可以比作是硬盘的存储空间。操作系统久存放在闪存中。NVRAM是用来存放配置信息和注册设置。路由器的注册设置与Windows注册表相似，控制硬件和启动的参数。
While highly complex, the Cisco IOS contains an excellent context-sensitive help system.
This help system can speed advanced configuration tasks by showing all available
command options at the current command prompt. There is also a highly developed
online technical documentation system available on Cisco’s Web site that provides
answers to almost any question or possible configuration scenario.
虽然高度复杂，思科IOS拥有极好的文本识别帮助系统。这个帮助系统可以通过显示当前命令模式下所有可用的命令选项。在思科的网站上有很好的在线技术文档系统可用，该技术
文档提供几乎所有的问题的答案或是可能的配置模式。
 

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