文件名称：系统启动综述-网络故障应急处理-路由器的配置及管理
文件大小：4.24MB
文件格式：PPT
更新时间：2024-05-15 19:43:46
网络故障 路由器 配置 管理
系统启动综述 系统启动的顺序 通过终端不断反馈启动的信息 核查硬件 查找并载入 Cisco IOS software image 查找并调用路由器的配置信息 The startup routines for Cisco IOS software have the goal of starting router operations. The router must deliver reliable performance connecting the user networks it was configured to serve. To start the router: Make sure that the router comes up with tested hardware. Find and load the Cisco IOS software that the router uses for its operating system. Find and apply the configuration statements about router-specific attributes, protocol functions, and interface addresses. The router will make sure that it comes up with tested hardware. When a Cisco router powers up, it performs a power-up self-test. During this self-test, the router executes diagnostics from ROM on all modules. These diagnostics verify the basic operation of the CPU, memory, and interface circuitry. After verifying the hardware functions, the router proceeds with software initialization. Some startup routines act as fallback operations that are able to perform the router startup should other routines be unable to do so. This flexibility allows Cisco IOS software to start up in a variety of initial situations.