Last Modified: Oct 19, 2025
Affected Product(s):
BIG-IP Install/Upgrade, TMOS
Known Affected Versions:
17.1.1, 17.1.0, 16.1.5, 16.1.5, 16.1.4, 16.1.3, 16.1.2, 16.1.1, 16.1.0, 15.1.6, 15.1.5, 15.1.4, 15.1.3, 15.1.2, 15.1.1, 15.1.0
Fixed In:
17.5.0, 17.1.3, 16.1.6, 15.1.10.8
Opened: Jun 27, 2024 Severity: 3-Major
There are delays in REST API calls after upgrading to BIG-IP 17.1.1.x. Async commands may time out and expired operation exceptions may occur. Symptoms: -- "Error 500 AsyncContext timeout" in restjavad.0.log -- The system occasionally does not grant a REST API token -- High CPU utilization by java -- GUI timeout -- Spurious 400 / 500 errors from iControl REST
The delay in REST API calls and recurring timeout exceptions can disrupt normal operations, leading to degraded system performance and potential service disruptions. Users relying on the affected REST API endpoints may experience slower response times.
The problem occurs after upgrading to BIG-IP 17.1.1.x despite configuring timeout values to 300 for icrd and restjavad
Restarting restjavad mitigates the issue but the issue may occur again.
None