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CISCO路由器IOS升级方法总结

  Router>采用这种方法时,由于使用console口来传送,速率为9600bps,需要时间较长。因此可修改console口速率利用xmodem命令实现快速升级IOS.具体方法如下:

    QUOTE:rommon 1 > confreg 回车

    Configuration Summary

    enabled are:

    load rom after netboot fails

    console baud: 9600

    boot: image specified by the boot system commands

    or default to: cisco2-C2600

    do you wish to change the configuration? y/n [n]: y (选择 yes)

    enable "diagnostic mode"? y/n [n]: n (选择 no)

    enable "use net in IP bcast address"? y/n [n]: n (选择 no)

    disable "load rom after netboot fails"? y/n [n]: n (选择 no)

    enable "use all zero broadcast"? y/n [n]: n (选择 no)

    enable "break/abort has effect"? y/n [n]: n (选择 no)

    enable "ignore system config info"? y/n [n]: n (选择 no)

    change console baud rate? y/n [n]: y (选择 yes)

    enter rate: 0 = 9600, 1 = 4800, 2 = 1200, 3 = 2400

    4 = 19200, 5 = 38400, 6 = 57600, 7 = 115200 [0]: 7 (选择 7,用最大的11520

    速率的xmodem传输)

    change the boot characteristics? y/n [n]: n (选择 no)

    Configuration Summary

    enabled are:

    load rom after netboot fails

    console baud: 115200

    boot: image specified by the boot system commands

    or default to: cisco2-C2600

    do you wish to change the configuration? y/n [n]: n (选择 no)

    You must reset or power cycle for new config to take effect

    rommon 2 > reset 回车注意:在按reset键前,需要修改串口速度(我的电脑——端口属性——串口速度调为115200),然后再修改超级终端里设置速率为115200,记住,一定要这么做,否则会出现乱码! 然后关闭这个超级终端,重新建立一个超级终端连接,重新启动系统后,出现

    QUOTE:rommon 1> 提示符然后,输入

    QUOTE:rommon 1> xmodem -r

    Do not start the sending program yet……

    Invoke this application only for disaster recovery.

    Do you wish to continue? y/n [n]: y (选择 yes)

    Ready to receive file ……

    此时,在超级终端的菜单上的“传送”——“发送文件”——选择IOS映像文件所在地以及选择使用“xmodem”协议,点击“发送”即可。等待10-20分钟左右就可升级完3-6M的IOS文件!待升级完成后,请记住修改回计算机串口与超级终端、路由器confreg下的xmodem等传输速率为9600bps.

    方法如下:

    QUOTE:Router>en 进入新IOS的特权模式

    Router#reload 重启系统

    Proceed with reload? [confirm] 回车

    00:01:04: %SYS-5-RELOAD: Reload requested

    System Bootstrap, Version 11.3(2)XA4, RELEASE SOFTWARE (fc1)

    Copyright (c) 1999 by cisco Systems, Inc.

    TAC:Home:SW:IOS:Specials for info

    PC = 0xfff0a530, Vector = 0x500, SP = 0x680127b0

    C2600 platform with 24576 Kbytes of main memory

    PC = 0xfff0a530, Vector = 0x500, SP = 0x80004684

    monitor: command "boot" aborted due to user interrupt

    30秒内按ctrl+break键

    rommon 1 > confreg ( 输入“confreg”命令)

    Configuration Summary

    enabled are:

    load rom after netboot fails

    console baud: 115200

    boot: image specified by the boot system commands

    or default to: cisco2-C2600

    do you wish to change the configuration? y/n [n]: y (选择 yes)

    enable "diagnostic mode"? y/n [n]: n (选择 no)

    enable "use nn IP bcast address"? y/n [n]: n (选择 no)

    disable "load rom after netboot fails"? y/n [n]: n (选择 no)

    enable "use all zero broadcast"? y/n [n]: n (选择 no)

    enable "break/abort has effect"? y/n [n]: n (选择 no)

    enable "ignore system config info"? y/n [n]: n (选择 no)

    change console baud rate? y/n [n]: y (选择 yes)

    enter rate: 0 = 9600, 1 = 4800, 2 = 1200, 3 = 2400

    4 = 19200, 5 = 38400, 6 = 57600, 7 = 115200 [7]: 0 (选择 0,改回用标准速率速率9600的xmodem传输)

    change the boot characteristics? y/n [n]: n (选择 no)

    Configuration Summary

    enabled are:

    load rom after netboot fails

    console baud: 9600

    boot: image specified by the boot system commands

    or default to: cisco2-C2600

    do you wish to change the configuration? y/n [n]: n You must reset or power cycle for new config to take effect

    rommon 2 >此时手工改回计算机串口与超级终端2者传输速率为9600

    然后敲入

    QUOTE:rommon 2 >reset最好关掉电源后,重新启动。利用xmodem命令实现路由器IOS升级速度较慢,往往等上很长时间,为了快速升级,可以采用下列方法。

(二)通过tftpdnld命令升级IOS,具体步骤如下:

    1、用Cisco原配的线缆连接路由器的console口与PC机的COM1,使用PC机的超级终端软件访问路由器;用一根双绞线连接路由器的eth0/0口与PC机的网卡。

    2、将路由器的eth0/0口IP地址设为10.32.10.32;PC机的IP地址设为10.32.10.1.将要升级的IOS映象文件拷贝到相关的目录中,并运行TFTP服务器软件,通过菜单设置Root目录为拷贝IOS映象文件所在目录。

    3、通过set 命令查看配置参数

    QUOTE:rommon 2 > set

    PS1=rommon ! >

    BOOT=

    BSI=0

    RET_2_RTS=

    ?=0 4、在 rommon 状态下输入:(注意大小写)

    QUOTE:rommon 3 >IP_ADDRESS=10.32.10.1             (路由器的ip地址)

    rommon 4 >IP_SUBNET_MASK=255.255.255.0     (路由器的掩码)

    rommon 5 >DEFAULT_GATEWAY=10.32.10.32     (缺省网关,是pc机的ip地址)

    rommon 6 >TFTP_SERVER=10.32.10.32         (是pc机的ip地址)

    rommon 7 >TFTP_FILE=C2600-I-MZ.122-11.BIN    (上传ios文件的名称)

    rommon 8>sync                             (保存参数配置)

    rommon 9 >set                              (查看)

    rommon 10 > set

    PS1=rommon ! >

    BOOT=

    IP_ADDRESS=10.32.10.1

    IP_SUBNET_MASK=255.255.255.0

    DEFAULT_GATEWAY=10.32.10.32

    TFTP_SERVER=10.32.10.32

    TFTP_FILE=C2600-I-MZ.122-11.BIN

    BSI=0

    RET_2_RTS=

    ?=0

    rommon 11 >tftpdnld执行tftpdnld命令进行ios升级,有时可能会报错或命令不执行,这时只要用sync命令保存配置后,重新启动路由器(最好关掉电源再开机)后,再执行tftpdnld命令就可以了。

    QUOTE:rommon 11 >tftpdnld(传送文件)出现提示选择y

    IP_ADDRESS: 10.32.10.1

    IP_SUBNET_MASK: 255.255.255.0

    DEFAULT_GATEWAY: 10.32.10.32

    TFTP_SERVER: 10.32.10.32

    TFTP_FILE: C2600-I-MZ.122-11.BIN

    Invoke this command for disaster recovery only.

    WARNING: all existing data in all partitions on flash will be lost!

    Do you wish to continue? y/n:  [n]:  y

    Receiving C2600-I-MZ.122-11.BIN from 10.32.10.32!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

    !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

    …

    !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

    File reception completed.

    Copying file C2600-I-MZ.122-11.BIN to flash.

    Erasing flash at 0x607c0000

    program flash location 0x605b0000

    rommon 13 >

    在rommon 13 >提示符下键入reset,或重新启动路由器(power-cycle),进入正常引导状态,即:

    Router>笔者在Cisco2500、2600、7200等系列路由器上均实际操作过,以上为在Cisco2610路由器上实际操作捕获或截屏,所配地址只是特例,大家可根据实际需要予以修改。最后建议:大家在作正常路由器系统升级时,为防止不正确操作等引起的升级失败,请先把路由器原有的系统备份下来。

 

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