Cisco Cisco IOS Software Release 12.2(53)SE
12
Release Notes for the Catalyst 3750, 3560, and 2960 Switches, Cisco IOS Release 12.2(53)SE and Later
OL-21141-03
Upgrading the Switch Software
Caution
If you are upgrading a Catalyst 3750 switch that is running a release earlier than Cisco IOS
Release 12.1(19)EA1c, this release includes a bootloader upgrade. The bootloader can take up to
1 minute to upgrade the first time that the new software is loaded. Do not power cycle the switch during
the bootloader upgrade.
Release 12.1(19)EA1c, this release includes a bootloader upgrade. The bootloader can take up to
1 minute to upgrade the first time that the new software is loaded. Do not power cycle the switch during
the bootloader upgrade.
Step 3
Copy the image to the appropriate TFTP directory on the workstation, and make sure that the TFTP
server is properly configured.
server is properly configured.
For more information, see Appendix B in the software configuration guide for this release.
Step 4
Log into the switch through the console port or a Telnet session.
Step 5
(Optional) Ensure that you have IP connectivity to the TFTP server by entering this privileged EXEC
command:
command:
Switch# ping tftp-server-address
For more information about assigning an IP address and default gateway to the switch, see the software
configuration guide for this release.
configuration guide for this release.
Step 6
Download the image file from the TFTP server to the switch. If you are installing the same version of
software that is currently on the switch, overwrite the current image by entering this privileged EXEC
command:
software that is currently on the switch, overwrite the current image by entering this privileged EXEC
command:
Switch# archive download-sw /overwrite /reload
tftp:[[//location]/directory]/image-name.tar
tftp:[[//location]/directory]/image-name.tar
The /overwrite option overwrites the software image in flash memory with the downloaded one.
The /reload option reloads the system after downloading the image unless the configuration has been
changed and not saved.
changed and not saved.
For //location, specify the IP address of the TFTP server.
For /directory/image-name.tar, specify the directory (optional) and the image to download. Directory
and image names are case sensitive.
and image names are case sensitive.
This example shows how to download an image from a TFTP server at 198.30.20.19 and to overwrite
the image on the switch:
the image on the switch:
Switch# archive download-sw /overwrite
tftp://198.30.20.19/c3750-ipservices-tar.122-50.SE.tar
tftp://198.30.20.19/c3750-ipservices-tar.122-50.SE.tar
You can also download the image file from the TFTP server to the switch and keep the current image by
replacing the /overwrite option with the /leave-old-sw option.
replacing the /overwrite option with the /leave-old-sw option.
Recovering from a Software Failure
For additional recovery procedures, see the “Troubleshooting” chapter in the software configuration
guide for this release.
guide for this release.