BugZero | F5 BugID 636348 - BIG-IP systems configured for high availability (H...

F5 - Defect ID: 636348

BIG-IP systems configured for high availability (HA) and System Gateway Failsafe may fail to load their configuration after device trust is reset.

F5 - Defect ID: 636348

BIG-IP systems configured for high availability (HA) and System Gateway Failsafe may fail to load their configuration after device trust is reset.

Last updated on July 18th, 2026

BugZero Risk Score
5.8 Medium

Overall: 5.8

Severity: 6.4

Community: 4.2

Lifecycle: 6.4

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Bug Details

Priority: 4-Minor
Status: Not Verified
Impact Category: Local Traffic Manager

Description

Symptoms

In the /var/log/ltm file you may observe an error message similar to the following example 01071837:3: The pool (/Common/http_pool) contains a reference to a gateway failsafe device (/Common/bigip1.f5.com), which does not exist on the system. Please specify a valid device for this configuration. Unexpected Error: Loading configuration process failed.

Impact

Configuration may fail to load

Conditions

This issue occurs when all the following conditions are met: -You have multiple BIG-IP systems in a High Availability (HA) configuration. -You have configured System Gateway Failsafe -You reset device trust -You attempt to reload the configuration or reboot the device before recreating the device trust

Workaround

Remove Gateway Failsafe before resetting device trust

Fix Information

None

Change history

Links

Original Vendor Announcement

Relevant Products

Click on a version to see all relevant bugs

Affected versions:11.6.1, 11.6.1 hf1, 11.6.1 hf2, 11.6.2, 11.6.2 hf1, 11.6.3, 11.6.3.1, 11.6.3.2, 11.6.3.3, 11.6.3.4, 11.6.4, 11.6.5, 11.6.5.1, 11.6.5.2, 11.6.5.3, 13.1.0, 13.1.0.1, 13.1.0.2, 13.1.0.3, 13.1.0.4, 13.1.0.5, 13.1.0.6, 13.1.0.7, 13.1.0.8, 13.1.1, 13.1.1.2, 13.1.1.3, 13.1.1.4, 13.1.1.5, 13.1.3, 13.1.3.1, 13.1.3.2, 13.1.3.3, 13.1.3.4, 13.1.3.5, 13.1.3.6, 13.1.4, 13.1.4.1, 13.1.5, 13.1.5.1, 14.0.0, 14.0.0.1, 14.0.0.2, 14.0.0.3, 14.0.0.4, 14.0.0.5, 14.0.1, 14.0.1.1, 14.1.0, 14.1.0.1, 14.1.0.2, 14.1.0.3, 14.1.0.5, 14.1.0.6, 14.1.2, 14.1.2.1, 14.1.2.2, 14.1.2.3, 14.1.2.4, 14.1.2.5, 14.1.2.6, 14.1.2.7, 14.1.2.8, 14.1.3, 14.1.3.1, 14.1.4, 14.1.4.1, 14.1.4.2, 14.1.4.3, 14.1.4.4, 14.1.4.5, 14.1.4.6, 14.1.5, 14.1.5.1, 14.1.5.2, 14.1.5.3, 14.1.5.4, 14.1.5.6

Fixed versions: No known fixed versions

Relevant Products

Click on a version to see all relevant bugs

Fixed versions: No known fixed versions

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F5 - Defect ID: 636348

BIG-IP systems configured for high availability (HA) and System Gateway Failsafe may fail to load their configuration after device trust is reset.

F5 - Defect ID: 636348

BIG-IP systems configured for high availability (HA) and System Gateway Failsafe may fail to load their configuration after device trust is reset.

Last updated on July 18th, 2026

BugZero Risk Score5.8 Medium

Bug Details

Symptoms

Impact

Conditions

Workaround

Fix Information

Links

Top F5 Defects

Ready to prevent the next vendor outage?

F5 - Defect ID: 636348

BIG-IP systems configured for high availability (HA) and System Gateway Failsafe may fail to load their configuration after device trust is reset.

F5 - Defect ID: 636348

BIG-IP systems configured for high availability (HA) and System Gateway Failsafe may fail to load their configuration after device trust is reset.

Last updated on July 18th, 2026

BugZero Risk Score5.8 Medium

Bug Details

Symptoms

Impact

Conditions

Workaround

Fix Information

Links

Top F5 Defects

Ready to prevent the next vendor outage?

BugZero Risk Score
5.8 Medium

BugZero Risk Score
5.8 Medium