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Barracuda Load Balancer ADC

How to Update the Firmware on Clustered Systems

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To update the firmware with a minimal disruption of service:

  1. Download the new version of the firmware on both units.
  2. Go to the ADVANCED > High Availability page of the Primary unit and set Failback Mode to Manual in the Cluster Settings section.
  3. Go to the ADVANCED > High Availability page of the Backup (Passive) unit and ensure Failback Mode is Manual.
  4. On the Backup unit, go to the ADVANCED > Firmware Update page and click on the Apply Now button next to the downloaded firmware version.
  5. This reboots the unit. Wait until the Backup unit comes up.
  6. On the Primary unit, go to the ADVANCED > High Availability page and click the Failover button under Clustered Systems. This operation fails over all Service(s) from the Primary unit to the Backup unit. The Backup unit assumes the Service(s) and continues to process the traffic.
  7. On the Primary unit, go to the ADVANCED > Firmware Update page and click on the Apply Now button next to the downloaded firmware version. This reboots the unit.
  8. Now, go to the ADVANCED > High Availability page of the Primary unit and click on the Failback button under Clustered Systems. This operation fails back all Service(s) from the Backup unit to the Primary unit. The Primary unit assumes the Service(s) and continues to process the traffic.
  9. On the Primary unit, change the Failback Mode to Automatic if you want the Primary (Active) system to resume Service(s) upon its recovery automatically.

 

 

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