Verify that the download was successful by issuing a dir flash.All of the devices used in this document started with a cleared (default) configuration.
If your network is live, make sure that you understand the potential impact of any command. This procedure can also be used where there are no Trivial File Transfer Protocol (TFTP) servers or network connections, and a direct PC connection (or through a modem connection) to the routers console is the only viable option. Srw2024 Ing Code Using Xmodem Source Serial Port OfBecause this procedure relies on the console speed of the router and the serial port of the PC, it can take a long time to download an image. For example, downloading Cisco IOS Software Release 12.1(16) IP Plus image to a Cisco 1600 Series Router using a speed of 38400 bps takes approximately 25 minutes. This option is only valid for the Cisco 1600 series routers. Values are 1200, 2400, 4800, 9600, 19200, 38400, and 115200 bps. This argument is ignored when the -r keyword is specified since only one file can be copied to DRAM. On the Cisco 1600 series routers, files are loaded to the ROMmon for execution. In order to find out the syntax and available options to use with the xmodem command, enter xmodem - at the ROMmon prompt. If you specify -sdata-rate of 115200 bps for example, you can increase the download rate and hence, reduce download time. If the PC serial port is not using a 16550 UART, it is recommended that you use a speed of 38,400 or lower. In this example, configure Windows HyperTerminal for 8-N-1 at 9600 bps and connect your PCs serial port to the console port of the router. Once connected, you need to get into the ROMmon prompt (rommon 1). Srw2024 Ing Code Using Xmodem Source Software Image AndTypically, if the routers Cisco IOS software image and bootflash image are both corrupt, the router only comes up in ROMmon mode. If the former is not true and you need to get into the ROMmon prompt, you need to change the configuration register (typically 0x2102 as given by show version ) to 0x0. However, before you issue the xmodem command, ensure that you have the new Cisco IOS software image on your PC. Perform a CRC-16 checksum using the c option and using a download speed of 115200 bps (only on the Cisco 1600 Series ) by specifying -s115200. The trick here is that the Cisco 1603 only supports a maximum baud rate of 9600 bps. Therefore, when connecting at 115200 bps, you cannot see the router prompt. Once connected to the router at 115200 bps, select Transfer and Send File from the HyperTerminal menu bar.
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