Load balancing in f5 is not working as expected

I suspect you have persistence enabled and the timeout is long enough that the session never expires, and thus the web server continues to hit the web logic server that the web server has a 'session' with.

 

 

There's a couple of remedies, but if you wish the sessions to move back to the original web logic server, you'll have to use an iRUle to select the pool member and over-ride what the LTM would do from your config.

 

 

H