Updating the System Image | Cisco Systems 3 guide

Chapter 3 Initial Switch Router Configurations

Updating the System Image

This section provides minimal instructions for updating the system image on your Layer 3 switch router. This procedure assumes that you are manually booting the switch router from a system image on the boot flash memory SIMM. You can also configure the switch router to boot automatically from a system image specified in the BOOT environment variable. For additional information on booting options and maintaining system images, refer to the Cisco IOS Configuration Fundamentals Configuration Guide.

To update the system software, use the following steps:

Step 1 Download the system image from CCO.

Step 2 Copy the system image to the switch router.

Step 3 Reload the switch router with the new image.

Downloading System Images from CCO

Cisco IOS system images, along with other software, are available from the Software Center on Cisco Connection Online (CCO) at http://www.cisco.com. You can download system images from CCO using your browser’s FTP capability, using conventional FTP, or using CCO’s asynchronous dial-up interface.

For instructions on accessing and downloading software from CCO, refer to the Software Downloading from CCO via World Wide Web publication at the Software Center on CCO.

Copying the System Image to the Switch Router

You can copy the system image to the switch router using TFTP, FTP, or RCP. If the system you used to download the image from CCO does not function as a TFTP, FTP, or RCP server, you must first copy the file to an intermediate server that provides those services to your switch router.

Note Before copying the system image from the server to the switch router, check the size of the file to make sure you will have enough room for it in your switch router’s boot flash memory. On UNIX file systems, use the ls -lacommand from the directory where the file is stored to display the file size.

In the event that the boot flash memory is full, you must erase all the files in the boot flash memory file system before copying a new image file from the TFTP server. In addition, before you copy a new image from the TFTP server, you must first download a copy of your known good image. In case the new image file you copy from the TFTP server is corrupted, you can revert to the known good image.

	Catalyst 2948G-L3 and Catalyst 4908G-L3 Software Feature and Configuration Guide
3-14	78-10408-01, Cisco IOS Release 12.0(7)W5(15d)

3 specifications

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