用xmodem重新快速灌IOS

2019-11-05 01:02:39

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　　先打開超級終端，進入rommon 模式（Ctrl+Break組合鍵），鍵入confreg, 如下：

rommon 1 > confreg 回車

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 (選擇 yes)

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

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

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

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

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

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

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

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

4 = 19200, 5 = 38400, 6 = 57600, 7 = 115200 [0]: 7 (選擇 7,用最大的115200速率的xmodem傳輸)

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

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

rommon 2 > reset 回車

注重：在此時鍵入 reset鍵之前，開始定義串口速度（我的電腦---端口屬性----串口速度調為115200），然后再修改超級終端里設置速率為115200，記住，一定這么做！否則出現亂碼！然后關閉這個超級終端，重新建立一個超級終端連接，（期間系統重新啟動）啟動后，出現

rommon 1> 提示符

然后,輸入

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 (選擇 yes)

Ready to receive file ...

此時，在超級終端的菜單上的“傳送”---“發送文件”----選擇IOS鏡像文件所在地以及選擇使用“xmodem”協議，點擊“發送”即可。然后等待10-20分鐘左右就把3-6M的IOS灌進去了！

（修改回計算機串口與超級終端、路由器confreg下的xmodem等9600的傳輸速率）

（videre注：實際用的時候，我發現這個命令總是改不成功，后來發現在line con 0下面有了一個speed 115200，所以即使改register成功，啟動以后router又執行speed 115200,還是不行，所以假如有這個問題，記得把這個語句no掉）

Router>en 進入新IOS的特權模式

Router#reload 重啟系統

Proceed with reload? [confirm] 回車

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 （輸入“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 (選擇 yes)

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

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

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

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

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

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

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

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

4 = 19200, 5 = 38400, 6 = 57600, 7 = 115200 [7]: 0 (選擇 0,改回用標準速率速率9600的xmodem傳輸)

change the boot characteristics? y/n [n]: n (選擇 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 >

此時手工改回計算機串口與超級終端2者傳輸速率為9600；然后敲入 rommon 2 >reset 。( 最好關電源)

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