CRC mode: Timeout value for first packet 3rd Timeout short time 4th Timeout long time 5th Timeout very long time. The maximum data sub packet length is Usually the larger packet length causes the faster sending speed. The maximum window size is Usually the larger window size causes the faster sending speed.
If you want to set the window size to infinity, specify a minus value e. If the communication line has problems in the flow control or error correction, or the data processing power of the host is extremely low, decreasing the packet length or window size may improve speed and stability of file sending.
Notice how the Flash gets erased towards the end automatically compared to Cisco C Therefore, the reason why the f option is not required here.
Finally, ensure that you reset the console speed back to and change the boot sequence back to default by changing the configuration register back to 0x The standard procedure uses the default console speed of 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.
An increase to the console speed on the router helps decrease the time it takes to do the xmodem file transfer. After setting the hyperterminal, you receive a rommon prompt. Enter the xmodem command. Before you enter an xmodem command, there should be a software image residing in your terminal or your local hard drive. After this message appears, you have to download the file using xmodem and this procedure:. In the dialog box which appears, click on browse and look for the file name on your local hard drive.
After the transfer completes, the router will reload itself. When the reload completes, press the return key to be taken to a prompt and to reset the configuration register and the console line speed. Upon changing the console speed, you will lose connectivity. Go to your terminal program, change the baud rate to , and reconnect to the router console. Contents Introduction. Optional CRC checksumming, which is more sophisticated and thorough than standard checksumming.
Optional Uses the Ymodem protocol for higher throughput. Optional Erases the first partition in Flash memory before starting the download. This option is only valid for the Cisco series. Optional Erases all Flash memory before starting the download.
This option is only valid for the Cisco series routers. The default is Flash memory. This site uses Akismet to reduce spam. Learn how your comment data is processed. Skip to content. The last step in the recovery was setting back the baud rate to , reconfigure my terminal and boot the image: switch: set BAUD switch: boot flash:cipbasek9-mz.
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