Forum Discussion

Rein_Tollevik's avatar
Rein_Tollevik
Icon for Nimbostratus rankNimbostratus
Apr 04, 2018

Enabling ASM in LTM policies causes policy and irule events to be evaluated twice

We are using LTM policies to route traffic to the correct pool based on the Host: header and URL in the request. The policy action also modifies headers in the request, including the Host: header its...
application delivery
BIG-IP Access Policy Manager (APM)
LTM
Stanislas_Piro2's avatar
Stanislas_Piro2
Icon for Cumulonimbus rankCumulonimbus
Apr 04, 2018

I guess the issue is caused by APM and not ASM with LTM Policies.

 

Did you configure APM with clientless mode?

 

when working with clientless mode, first packet matches LTM policies, then HTTP_REQUEST, then ACCESS_SESSION_STARTED. when session is allowed, the request is retried (like HTTP::retry), so it evaluate again LTM policies, then HTTP_REQUEST