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Barracuda Link Balancer


As of 1st March 2019, all new sales for the Barracuda Link Balancer product will cease. Only renewals of software and hardware subscriptions for a maximum of one year is available for a limited time. 1st March 2020: All Barracuda Link Balancer sales will cease; neither new sales nor any renewals will be available. If you currently hold a maintenance and support contract, you will continue to receive our award-winning support and services until your contract expires.

How to Update the Firmware on Clustered Systems

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To prevent a transfer of control from one system to the other while a firmware update is in progress, you must disable automatic failback on the High Availability page before attempting to update the firmware on either system.

Do not manually power-cycle the Barracuda Link Balancer at any time during the update process, because power cycling may cause firmware corruption.

Update the Firmware

You should update the firmware on the passive system first, and then update the firmware on the active system.

On each system (passive then active), perform the following steps:

  1. Go to the ADVANCED > High Availability page.
  2. In the Cluster Settings section, set the Failback Mode to Manual.
  3. Click Save Changes.
  4. Go to the ADVANCED > Firmware Update page. If a more recent firmware version is available, the Download Now button will be enabled. 
  5. Click Download Now. Click Refresh to update the download progress display at any time
  6. To update the firmware, click Apply Now.

Enable automatic failback, if desired, after both systems have been updated and are back online.

  1. Go to the ADVANCED > High Availability page.
  2. In the Cluster Settings section, set the Failback Mode back to Automatic.
  3. Click Save Changes.

Revert the Firmware

The Firmware Update page allows you also to revert to a previous firmware version. You should only revert to an old firmware version if your recently downloaded version causes unexpected problems. Always contact Barracuda Networks Technical Support before reverting to a previous firmware version.

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