用xmodem重新快速灌IOS

2019-11-05 01:02:39

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　　先打开超级终端，进入rommon 模式（Ctrl+Break组合键），键入confreg, 如下：

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115200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

注重：在此时键入 reset键之前，开始定义串口速度（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，一定这么做！否则出现乱码！然后关闭这个超级终端，重新建立一个超级终端连接，（期间系统重新启动）启动后，出现

rommon 1> 提示符

然后,输入

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镜像文件所在地以及选择使用“xmodem”协议，点击“发送”即可。然后等待10-20分钟左右就把3-6M的IOS灌进去了！

（修改回计算机串口与超级终端、路由器confreg下的xmodem等9600的传输速率）

（videre注：实际用的时候，我发现这个命令总是改不成功，后来发现在line con 0下面有了一个speed 115200，所以即使改register成功，启动以后router又执行speed 115200,还是不行，所以假如有这个问题，记得把这个语句no掉）

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

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 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 [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 rommon 2 >reset 。( 最好关电源)

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