First, we need to have the IOS file, glc-lh-smd if no backup the original file, you can find the same version
ofIOS to replace.
Methods: X-Modem
I have tried a method, when Flash is deleted, restart can not enter the system, you can use X-Modem to restore it. I accidentally deleted a Cisco2950 switch Flash IOS at that time,causing the system to be unable to start, get a conclusion on many data: the only way to recover by X-Modem. The recovery method of my:
First open the super terminal, enter rommon mode (Ctrl+Break key combination), type confreg, as follows:
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Rommon 1 > confreg enter
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 (yes)
Enable "diagnostic mode" [n]? Y/n: n (no)
Enable "use net in IP BCAST address" [n]? Y/n: n (no)
Disable "load ROM after netboot fails" [n]? Y/n: n (no)
Enable "use all zero broadcast" [n]? Y/n: n (no)
Enable "break/abort has effect" [n]? Y/n: n (no)
Enable "ignore system config info" [n]? Y/n: n (no)
Change console baud rate? Y/n [n]: Y (yes)
Enter rate: 0 = 9600, 1 = 4800, 2 = 1200, 3 = 2400
4 = 19200, 5 = 38400, 6 = 57600, 7 = 115200: 7 ([0] 7, XMODEM 115200 of the maximumtransmission rate)
Change the boot characteristics? Y/n [n]: n (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 (no)
You must reset or power cycle for new config to take effect
Rommon 2 > Reset enter
Note: before the type reset key, start by defining a speed (Computer - port attribute my ---- serial speed is 115200), then modify the super terminal set at a rate of 115200, remember,must do! Otherwise the garbled! Then close the super terminal, the re establishment of a super terminal connection, (during the system restart) after the start, there
Rommon 1> prompt
Then, input
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 (yes)
Ready to receive file...
At this time, in the super terminal on the menu "transfer" - "to send the
file, select" IOS image file location and choose to use the
"XMODEM" agreement, click the "send" button
Then wait for about 10-20 minutes to 3-6M IOS fill in the! (modified back to the computer serial
port and super terminal, router confreg under the XMODEM 9600 transmission
rate)
(videre note: the actual use of the time, I found this command is not successful, later found on the line con 0 with a speed 115200, so even if the modified register success, start routerand implementation of speed 115200, or not, so if you have this problem, remember to turnoff the no statement)
Router>en enters the new IOS privileged mode
The resumption of the Router#reload system
Proceed with reload? [confirm] enter
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 (enter
"confreg" command)
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 (yes)
Enable "diagnostic mode" [n]? Y/n: n (no)
Enable "use net in IP BCAST address" [n]? Y/n: n (no)
Disable "load ROM after netboot fails" [n]? Y/n: n (no)
Enable "use all zero broadcast" [n]? Y/n: n (no)
Enable "break/abort has effect" [n]? Y/n: n (no)
Enable "ignore system config info" [n]? Y/n: n (no)
Change console baud rate? Y/n [n]: Y (yes)
Enter rate: 0 = 9600, 1 = 4800, 2 = 1200, 3 = 2400
4 = 19200, 5 = 38400, 6 = 57600, 7 = 115200 ([7]: 0 XMODEM transmission 0, switch back to
using the standard rate of 9600)
Change the boot characteristics? Y/n [n]: n (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.
This manual change back to the computer serial port and super terminal 2 transmission rateis 9600
And then typing
(the best power off)
More information, please view: http://www.3anetwork.com
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