![]() The default rate is specified in the configuration register. s data-rate (Optional) Sets the console port's data rate during file transfer. x (Optional) Does not execute the Cisco IOS software image on completion of the download. r (Optional) Downloads the file to DRAM. This option is only valid for the Cisco 1600 series routers. f (Optional) Erases all Flash memory before starting the download. This option is only valid for the Cisco 1600 series. e (Optional) Erases the first partition in Flash memory before starting the download. y (Optional) Uses the Ymodem protocol for higher throughput. Syntax Description -c (Optional) CRC-16 checksumming, which is more sophisticated and thorough than standard checksumming. Xmodem This table describes the command syntax for the xmodem command. Here is the command syntax for xmodem as per the. 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. Xmodem Protocolīecause 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. 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 router's console is the only viable option. Xmodem can be used on a group of routers (see ) and is used in disaster recovery situations where the router has no valid Cisco IOS software or bootflash image to boot from and hence, only boots up in ROMmon. Refer to for more information on document conventions. If your network is live, make sure that you understand the potential impact of any command. Switch software provides SNMP support for. Xmodem Procedure for Downloading a Cisco IOS Software Image. All of the devices used in this document started with a cleared (default) configuration.ĭownloading code using XMODEM. The information in this document was created from the devices in a specific lab environment. Cisco AS5200, AS5300, AS5350, and AS5400 Universal Access Servers Note: Xmodem can also be used on certain Catalyst switches.The information in this document is based on these software and hardware versions: There are no specific requirements for this document. This document explains how to use the xmodem command at the console to download Cisco IOS® software using the ROM monitor (ROMmon). ![]()
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