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

Forum Discussion

LyonsG_85618's avatar
LyonsG_85618
Icon for Cirrostratus rankCirrostratus
Mar 30, 2015

Session Persistence when pool disabled

I have configured a VIP with a default pool containing 2 servers. Action on service down has been configured as RESET. I have a monitor applied which retrieves a file that contains the word SUCCE...
application delivery
deployment
devops
irules
LTM
dragonflymr's avatar
dragonflymr
Icon for Cirrostratus rankCirrostratus
Mar 30, 2015

Hi,

 

When pool member is disabled it's still accepting new connections for existing persistent connections, as well as handling already open connections. Action on service down is only performed when pool member is marked down by monitor. So for you monitor setting it only happen when there is no match for both Receive String and Receive Disable String. If there is match for only Receive Disable String pool member is not set to down (equal to Forced offline admin status) it's set to disabled (SOL) so Action on Service down is not performed.

 

Piotr