Cisco Xmodem Download

Posted : admin On 20.12.2020
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Feb 01, 2006 Use this xmodem procedure in order to download a Cisco IOS software image onto a Cisco 3600 Series Router. The standard procedure uses the default console speed of 9600 bits per second. Xmodem is a slow transfer protocol, and the transfer of a file as large as a Cisco IOS software image could take an unacceptably long time. Use this xmodem procedure in order to download a Cisco IOS software image onto a Cisco 3600 Series Router. The standard procedure uses the default console speed of 9600 bits per second. Xmodem is a slow transfer protocol, and the transfer of a file as large as a Cisco IOS software image could take an unacceptably long time.

If you find yourself without an IOS on a switch during a reboot, you will need to transfer an image using Xmodem.

Download the image from TFTP to your computer:

tftp <tftp server ip>
get <image name>
quit

NOTE: You do NOT want to use a .tar package with Xmodem. Only use .bin images. If only a .tar image is available, extract the .bin to your computer.

Download and install Minicom to your computer:

sudo aptitude install minicom

  • Configure Minicom:

sudo minicom -s Skyrim special edition 1.5.16 patch download.

  • Filenames and paths
    • B (this lets you set the directory to upload from for xmodem)
    • Type in the directory path to the IOS image.
  • Serial port setup
    • Press A
    • Type in the path to your serial device (most likely /dev/ttyUSB0)
    • Press E
    • Press C
  • Save setup as dfl
  • Exit

Upload the IOS Image

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  • You should now be at a switch: prompt. If so, make sure there is enough room for the new image in flash:

dir flash:

  • If not,

format flash:

  • Power down, power back up.
  • Change the baud rate to 115200:

set BAUD 115200

  • The session should stop responding. No big deal.
    • Ctrl-A then Z.
    • Press Q
  • Console in at 115200 baud.

minicom -b 115200 Winrar 10 download 64 bit.

  • Now, get ready to copy over the new image. (Go grab a cup of coffee, because this is going to take a long time.)

copy xmodem:<image name> flash:<image name>

  • Press Ctrl-A then Z
  • Press S
  • Select xmodem
  • Select the IOS with space
  • Press Enter
  • The file transfer will start. It will take a long time.
  • When it finishes, change the baud back to 9600

set BAUD 9600

Your session should stop responding. If it does not:

unset BAUD 115200

  • Exit Minicom and reconnect again:
    • Ctrl-A then Z
    • Press Q

minicom

Cisco xmodem download software

Cisco Xmodem Download Windows

  • Try to boot from the new image:

boot flash:<image name>

You should now boot into full IOS.

If you have a Cisco switch that has a corrupted IOS, you can upload a new version via XModem. Here are the steps.

Cisco Xmodem Download Software

  1. Download something like HyperTerminal that support sending files via XModem
  2. Connect to the console port of the switch using the Cisco console cable and set your baud rate to 9600
  3. Optional: you may want to 'format flash:' to make sure you have enough free space. Note, this will delete your startup-config and any vlan’s you have configured
  4. Type in 'BAUD=115200'
  5. Disconnect your console session and reconnect with with a baud rate of 115200
    1. Note: some USB to serial adapters have problems with this. If 115200 doesn’t work, try 57600
  6. type in 'copy xmodem:{Cisco IOS .bin file} flash:{Cisco IOS .bin file}'
    1. Example: 'copy xmodem:c3750e-universalk9-mz.152-4.E2.bin flash:c3750e-universalk9-mz.152-4.E2.bin'
  7. In your terminal software (HyperTerminal) start sending the file via XModem
  8. After the upload is done, type in: 'BAUD=9600'
  9. Disconnect your console session and reconnect with with a baud rate of 9600
  10. Type in 'reboot'

Cisco Xmodem Download

This should boot the switch into IOS.