Mar 27, 2026 - For details about updated CVE-2025-53521 (BIG-IP APM vulnerability), refer to K000156741.

Forum Discussion

Subrun's avatar
Subrun
Icon for Cirrostratus rankCirrostratus
Jun 22, 2023

Idle Timeout not reflecting when Changed from Default 300 secs.

I changed Idle Timeout form 300 secs to a bigger value mainly followed below steps , but when traffic is following through F5 , user is seeing timeout in around 5 mins when they check directly from P...
application delivery
Subrun's avatar
Subrun
Icon for Cirrostratus rankCirrostratus
Jun 22, 2023

whisperer 

My Keep Alive Interval - is higher than Idle Timeout , since idle time out should trigger before

JRahm's avatar
JRahm
Icon for Admin rankAdmin
Jun 22, 2023

Hi Subrun if you take a verbose tcpdump capture w/ the F5 flags enabled, you'll be able to see the reset reason on the packets in the capture, if it is the big-ip that is resetting it and not an upstream devices that has shorter timers.