CCNA学习笔记2

路由器的管理与基础配置

3.6路由器基本命令

show version

show flash

show interface

show ip protocols

show ip router

show host

router(config)#host name hangzhou

banner start_delimiter message end_delimiter

router(config)#banner motd % enter text message,end with the character ‘%’,this the motd banner %

show host

clear host hanzhou

clear host *

router(config)# no ip domain-lookup

telnet ip

exit

<ctrl+shift+6><X>

show sessions

connect_number

disconnect connect_number

ping ip

ping <enter>

extended commands[n]: yes

trace ip

trace <enter>

3.5CLI命令行的使用

c?

clock?

Terminal no history

Terminal history 20

Show history

3.4CDP协议

定时器

router>show cdp

global cdp information

sending cdp packets every 60 seconds

sending a holdtime value of 180 seconds

查看cdp邻居信息

show cdp neighbors

show cdp entry name

show cdp entry *

router(config)# cdp run

router(config)#interface s0

router(cnfig-if)#cdp enable

3.3路由器的配置

配置文件

startup-config    nvram

running-config    ram

命令提示与模式

command interpreter

router>

router#

router(config)#

router(config-mode)#

setup

rom moniter

配置文件的管理

router#show running-config

router#show startup-config

router#copy stratup-config running-config

route(config)#eraser startup-config

3.2路由器的启动

1 om硬件检测程序

2 om-bootstrap 初步引导

3寻找IOS

register=ox2100

0x2101

0x2102

4 vram-startup-config  if no ->SETUP模式

3.1路由器的组成

cpu

rom

flash

nvram

ram

interface

ethernet0,serial1

console port

auxiliary port