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

Forum Discussion

f5mkuDefault's avatar
f5mkuDefault
Icon for Cirrus rankCirrus
Sep 04, 2020

Health monitor using https profile issue

Hi Experts, I have 1 issue that until now I still cannot find a definite answer after googling for a long time. I have an HA F5, active and standby unit. I created 1 VS and the pool health monitor u...
application delivery
big-ip
Health-Monitors
LTM
monitor
Samir's avatar
Samir
Icon for MVP rankMVP
Sep 04, 2020

Which BIGIP version you are running? As such not observed such behaviour in BIG-IP.

 

Gone through both wireshark image and found that one of the connection is going on x.x.x.12 and other is x.x.x.11. To narrow done issue, keep one member in pool and isolate the issue.

 

Try below options?

  • Remove the https monitor from pool , save the config and add back same monitor in pool
  • openssl s_client -connect x.x.x.x:443 -tls1_2
  • openssl s_client -connect x.x.x.x:443 -tls1

 

Hope this will help you.