• When the image version is different from than the existing version, the initializing code also updates the TP2 ASIC image to match the correct version in the image. In other words, if you upgrade or downgrade software, the procedure also upgrades or downgrades the TP2 ASIC image.

• Always keep a back up of the configuration before you change the software image (upgrade or downgrade). For example, before you upgrade to 4.1.8, save a copy of the 4.1.7 configuration and label it 4.1.7.

• Upgrades preserve the running configuration, but downgrades do not. When you downgrade, the running configuration is erased, including the management IP address.

• You must use a console port connection to reconfigure the management interface.

• After you have configured the management interface, you can restore the earlier configuration. For example, if you downgrade from 4.1.8 to 4.1.7, you can restore the 4.1.7 configuration.

• After the configuration is restored, the system reboots, and the restored configuration will be in effect.