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cisco router调试初步

2019-11-05 00:07:54
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  对于每一个路由器来说,都有一个控制台接口(Console),治理员可以通过RS-232 线缆把控制口和一个终端的主口连接起来,通过这个终端对路由器进行配置.
  
  终端通讯参数设置为:
  
  速度: 9600bps
  起始位: 1位
  数据位: 8位
  停止位: 1或2位
  校验: 无
  
  待终端通讯参数设置完毕后,接好路由器控制台,请先打开终端电源,后开路由器电源,之后就进入初始配置了.屏幕出现(以Cisco 2501为例):
  
  System Bootstrap, Version 5.2(5), RELEASE SOFTWARE
  Copyright (c) 1986-1994 by cisco Systems
  2500 PRocessor with 2048 Kbytes of main memory
  大约停顿1-2分钟,系统调入boot,请耐心等待
  
  F3: 3996764+54172+225404 at 0x3000060
  
  Restricted Rights Legend
  
  Use, duplication, or disclosure by the Government is
  subject to restrictions as set forth in subparagraph
  (c) of the Commercial Computer Software - Restricted
  Rights clause at FAR sec. 52.227-19 and subparagraph
  (c) (1) (ii) of the Rights in Technical Data and Computer
  Software clause at DFARS sec. 252.227-7013.
  
  cisco Systems, Inc.
  170 West Tasman Drive
  San Jose, California 95134-1706
  
  
  
  Cisco Internetwork Operating System Software
  IOS (tm) 2500 Software (C2500-I-L), Version 11.2(1), MAJOR RELEASE SOFTWARE (fc1)
  
  Copyright (c) 1986-1996 by cisco Systems, Inc.
  Compiled Mon 30-Sep-96 12:07 by ajchopra
  Image text-base: 0x030215A4, data-base: 0x00001000
  
  cisco 2500 (68030) processor (revision D) with 2048K/2048K bytes of memory.
  Processor board ID 02327592, with hardware revision 00000000
  Bridging software.
  X.25 software, Version 2.0, NET2, BFE and GOSip compliant.
  1 Ethernet/IEEE 802.3 interface(s)
  2 Serial network interface(s)
  32K bytes of non-volatile configuration memory.
  8192K bytes of processor board System Flash (Read ONLY)
  
  Notice: NVRAM invalid, possibly due to write erase.
  --- System Configuration Dialog ---
  
  At any point you may enter a question mark '?' for help.
  Use ctrl-c to abort configuration dialog at any prompt.
  Default settings are in square brackets '[]'.
  Would you like to enter the initial configuration dialog? [yes]:Return
  你是否要进入初始化配置?默认"是".
  
  First, would you like to see the current interface summary? [yes]:Return
  首先,你是否想看一下当前端口的状态?默认"是".
  
  Any interface listed with OK? value "NO" does not have a valid configuration
  下面会列出当前路由器所具有的硬件配置(包括局域网口和广域网口,以及个端口当前状态等等.)
  
  Interface IP-Address OK? Method Status Protocol
  Ethernet0 unassigned NO unset up down
  Serial0 unassigned NO unset down down
  Serial1 unassigned NO unset down down
  
  Configuring global parameters:
  
  Enter host name [Router]: JSRouter
  设置系统名,如JSRouter.
  
  The enable secret is a one-way cryptographic secret used
  instead of the enable passWord when it exists.
  
  Enter enable secret: cisco
  设置进入priviledged EXEC 的密码
  
  The enable password is used when there is no enable secret
  and when using older software and some boot images.
  
  Enter enable password: cisco1 (1)
  Enter virtual terminal password: cisco
  设置进入虚拟终端登录到路由器的口令,即远程登录(telnet)的口令
  Configure SNMP Network Management? [yes]:Return
  是否设置简单网管协议?
  Community string [public]:Return
  
  Configure IP? [yes]:Return
  是否设置IP协议?
  Configure IGRP routing? [yes]:Return (2)
  是否设置IGRP 路由协议?
  Your IGRP autonomous system number [1]:Return (3)
  你的IGRP 路由协议自治系统号(AS),默认为1.
  
  Configuring interface parameters:
  下面配置端口参数
  
  Configuring interface Ethernet0:Return
  Is this interface in use? [yes]:Return
  Configure IP on this interface? [yes]:Return
  IP address for this interface: 1.1.1.1
  Number of bits in subnet field [0]:Return (4)
  Class A network is 1.0.0.0, 0 subnet bits; mask is /8
  以上是配置以太口0,假设IP地址是1.1.1.1,掩码是255.0.0.0.
  
  Configuring interface Serial0:Return
  Is this interface in use? [yes]:Return
  Configure IP on this interface? [yes]:Return
  Configure IP unnumbered on this interface? [no]:Return
  IP address for this interface: 2.1.1.1
  Number of bits in subnet field [0]:Return
  Class A network is 2.0.0.0, 0 subnet bits; mask is /8
  以上是配置串口0,假设IP地址是2.1.1.1,掩码是255.0.0.0.
  
  Configuring interface Serial1:Return
  Is this interface in use? [yes]: no
  以上是当不需要用串口1时,请敲入no.
  
  The following configuration command script was created:
  
  hostname JSRouter
  enable secret 5 $1$Bv.r$j/Zm2B6jw9UTQPxLGZjAz.
  enable password cisco1
  line vty 0 4
  password cisco
  snmp-server community public
  !

  ip routing
  !
  interface Ethernet0
  ip address 1.1.1.1 255.0.0.0
  !
  interface Serial0
  ip address 2.1.1.1 255.0.0.0
  !
  interface Serial1
  shutdown
  no ip address
  !
  router igrp 1
  network 1.0.0.0
  network 2.0.0.0
  !
  end
  
  Use this configuration? [yes/no]: yes (5)
  确认当前配置后,把当前配置写入NVRAM 中.这样以后开机自动把配置调入内存,不需要重新配置了.
  
  Building configuration...
  Use the enabled mode 'configure' command to modify this configuration.
  
  
  Press RETURN to get started!
  
  
  %LINEPROTO-5-UPDOWN: Line protocol on Interface Ethernet0, changed state to down
  
  %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial0, changed state to down
  %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial1, changed state to down
  %LINK-3-UPDOWN: Interface Ethernet0, changed state to up
  %LINK-3-UPDOWN: Interface Serial0, changed state to down
  %LINK-3-UPDOWN: Interface Serial1, changed state to down
  %LINK-5-CHANGED: Interface Serial1, changed state to administratively down
  %SYS-5-RESTART: System restarted --
  Cisco Internetwork Operating System Software
  IOS (tm) 2500 Software (C2500-I-L), Version 11.2(1), MAJOR RELEASE SOFTWARE (fc1
  )
  Copyright (c) 1986-1996 by cisco Systems, Inc.
  Compiled Mon 30-Sep-96 12:07 by ajchopra
  JSRouter>en
  Password:(敲入密码,不反显的)
  JSRouter#
  
  备注:
  
  Enter enable password:-----这个口令是对于IOS 10.2以下版本适用,在IOS 10.3以上版本均使用secret,不再用password.在配置文件中, secret是加密显示的.
  现在我们通常都在IOS 10.3 版本以上,故无需password这个口令.
  另外,password和secret不能相同.
  
  在初始配置中,默认的路由协议是IGRP,若敲入yes,则生成IGRP路由协议.假如不想使用IGRP协议,则打No,在配置模式下(conf t)选择路由协议.
  
  自治系统 (autonomous system)-----它是一个域的概念.路由协议在一个 自制系统中可以交换路由信息,而在两个自制系统之间是不能直接传递路由信息的,必须通过类似网际路由协议才能互相通讯.这样就大大地缩小了路由表,减少它占用的带宽量,使网络具有扩展性.
  
  Number of bits in subnet field [0]-----掩码子网的位数.举例说明:
  掩码为255.0.0.0的掩码子网位数是0,掩码共8位
  掩码为255.255.0.0的掩码子网位数8,掩码共16位
  掩码为255.255.255.0的掩码子网位数16,掩码共24位
  掩码为255.255.255.252的掩码子网位数22,掩码共30位
  Cisco命令系统是即时生效的,也就是说,配置完后立即执行,但若不写入NVRAM 中,关掉电源后就会丢失.你若想保留更改的配置,请敲入write命令.
  Windows 95/NT 下,超级终端的设置.
  在 开始--->程序--->附件--->超级终端--->Hypetrm
  设定名称为cisco,再选择一个图标.
  请选择"直接连接到串口1"
  选择波特率为9600bps.
  最后把设置的保存在cisco文件里.下一次直接从超级终端cisco中启动.

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