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Cisco EtherSwitch Service Modules Feature Guide
Troubleshooting the Cisco EtherSwitch Service Module Software
67
Cisco IOS Release 12.2(25)SEC
Recovering from a Corrupted Software Image Using Xmodem
This section describes how to recover from a corrupted software image by using Xmodem.
Note The router should have the switch image in the router flash memory or have network connectivity to the
TFTP server.
The Cisco EtherSwitch service module software can be corrupted while upgrading the software, by
downloading the wrong file to the Cisco EtherSwitch service module, and by deleting the image file. In
all of these cases, the service module does not pass the power-on self-test (POST), and there is
no connectivity.
This procedure uses the Xmodem Protocol to recover from a corrupt or wrong image file. Many software
packages support the Xmodem Protocol, and this procedure is largely dependent on the emulation
software you are using.
To start the Xmodem protocol process, issue the password reset command. After you issue the
password reset command, this message appears:
Password reset process is complete...
The system has been interrupted prior to initializing the
flash filesystem. The following commands will initialize
the flash filesystem, and finish loading the operating
system software:
flash_init
load_helper
boot
Switch:
Restrictions
This procedure is recommended only for recovery of a corrupted image. To perform this procedure, the
Cisco EtherSwitch service module must be at the boot loader prompt, and the console from the router to
the Cisco EtherSwitch service module must be disconnected for the Xmodem Protocol to work.
SUMMARY STEPS
1. service-module interface slot/port password-reset
2. flash_init
3. load_helper filesystem:/file-url ... (optional)
4. control+6 x (Use x to get back to the router prompt.)
5. disconnect
6. copy flash: xmodem: (Use this command to download the software image from the router flash
memory. Use this command from the router prompt.)
or
copy tftp: xmodem: (Use this command to download the software image from a TFTP server. Use
this command only if the image is not on the router flash memory.)