DES-6500 Chassis-based Layer 3 Ethernet Switch Manual
302
Firmware Downgrade Procedure
For users wishing to downgrade their firmware versions for the chassis CPU and corresponding line cards, there are certain
guidelines and steps that need to be followed to ensure optimum functionality of the chassis and supported line cards.
Failing to follow these rules may result in inoperability of the chassis and installed line cards. Please see the explanation
below for more information regarding this subject.
Procedure Overview
1.
Before commencing with the firmware downgrade, the administrator must remove all line cards not
supported for that firmware release.
(ex. If the user is downgrading to R1.20-B09, the DES-6504 line card must
be removed from the chassis before beginning the firmware downgrade). See the
Line Card Firmware
Compatibility
table at the beginning of this section for more information on line cards and their supported
firmware versions.
2. After removing the unsupported line card, the user must execute the “
reset system
” command in the CLI
interface. This will clear the configurations of the unsupported line card in the chassis.
3. Once the “reset System” command is executed and the removal is a success, the user may then download the
lower version runtime code into the chassis CPU.
Remember to downgrade the installed line cards firmware
before downgrading the chassis’ CPU firmware.
This downgrade order MUST be followed or compatibility
issues will arise with the chassis and the line cards and may render your chassis inoperable.
4. Finally, the user must once again execute the “
reset system
” command into the CLI interface.
Downgrade Example
This downgrade example will refer to the downgrade procedure from R2.00-B20 to R1.20-B09 but is universal to all
firmware downgrade procedures for the DES-6500 chassis switch.
Summary of Contents for TM DES-6500
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