Basic Operation Guide 2013/06

Table Of Contents
Updating the switch: overview
CAUTION: Before you update the switch software to a new version:
We strongly recommend that you save a copy of your config file to an external location.
We advise against rolling back (going from a newer software version to an older software
version) without copying a backup config file to the device.
If you do choose to downgrade software using your existing config file, unpredictable changes in
the config file and switch behavior may occur. If booting a K.15.01.0031 or later config file into
a K.14.xx or earlier versions of software, the following commands may be removed from your
config file:
Any commands that are present in K.15.01.0031 (or later) but are not present in earlier
versions of software
logging
snmp-server
mirror-session
auto-tftp
filter source-port
fault-finder
interface loopback
To perform an update to your switch software, follow the steps below (see “Updating the switch:
detailed steps” (page 134) for detailed steps):
1. Download the image to your TFTP server.
2. Save your current configuration (Config1) to a backup configuration file (Config2).
3. Save your current configuration to an external tftp server.
4. Backup your current running image (Primary) to the secondary image.
5. Set your secondary image to boot with Config2.
6. Download the new image to the switch’s primary image.
7. Verify that your images and configuration are set correctly.
8. Reload the switch.
After following these steps, you should end up with the following results:
Primary image will hold the new software image you want to install (for example,
K.15.01.0031)
Secondary image will hold the image you are currently running (for example, K.14.47)
Primary image will boot with Config1 (config file corresponding to new software version—in
this example, K.15.01.0031)
Secondary image will boot with Config2* (config file corresponding to previous software
version—in this example, K.14.47)
* The current config file must be copied to Config2, or you will be unable to revert if the need
arises.
Downloading switch documentation and software from the web 133