How to config PBR

I'm new to F5 products and try to figure out the same thing, how to config policy based routing, so please don't mind me if I'm going to continue this thread.

 

 

From Bhattman reply, my understanding is wildcard virtual server will process every packets come to F5 and iRule associated with that wildcard virtual server will choose appropriate pool for those packets according to the sequence.

 

 

But what I still don't understand is since command 'pool' has been used, wouldn't F5 modified dst ip of packets to next hop ip address of a member selected? What we want is just to send it out the way we want but not to alter its dst ip.

 

 

Could someone explain to me and apologize for a newbie question. Thank you in advanced.