01-08-2025 04:58 AM
This is a notification for anyone running 1420 boxes in a high-availability (HA) configuration in their environments >11.1.4. We recently encountered significant issues with our NGFW operating in HA mode. Specifically, the HA setup failed on the active firewall, and the failover did not occur as expected to the secondary (standby) device. I had to manually suspend the active firewall to enable the secondary to take over, resulting in a brief but severe outage.
A ticket has been opened with TAC, and it appears we are among the first customers to report this issue. TAC has confirmed it to be an LACP-related bug that originated in version 11.1.4. Unfortunately, even downgrading to the preferred version 11.1.4-h7 does not resolve the problem. According to TAC, this issue is still under internal investigation and has not yet been made public. Their senior engineers are actively working on it.
As a temporary workaround, I configured LACP to passive mode between the firewall and the core switch. So far, this adjustment has stabilized the HA setup, with both firewalls operating in Active/Standby mode without errors.
If you encounter a similar issue, provide TAC with the following reference issue: PAN-275888.
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