Forum Discussion

P_K's avatar
P_K
Icon for Altostratus rankAltostratus
Jun 23, 2026

ASM attack signatures not syncing between active and standby F5

Hello F5ers, I have a pair of f5s in active/standby setup running ASM (WAF) module. I have ASM synchronization setup with sync-failover device group on both f5s. Everything else works fine but I not...
ASM WAF
management
security
Enes_Afsin_Al's avatar
Enes_Afsin_Al
Icon for MVP rankMVP
Jun 23, 2026

Hi P_K,

I’ve encountered a few issues related to the ASU sync problem.

 

Newly added and updated article:

ASM Automatic Signature Update (ASU) Fails to Sync to Standby Unit After Upgrade

https://my.f5.com/manage/s/article/K000161737

 

Bugs identified in a case opened to the support:

Live Update configuration sync failure in HA setup

https://cdn.f5.com/product/bugtracker/ID2219081.html

"Live Update" API is unresponsive after upgrade and recover only after tomcat restart

https://cdn.f5.com/product/bugtracker/ID2152445.html