iRule help with ports and pools

I'd like to be able to set up a VIP for each port but it isn't that simple. I'm replacing Cisco Local Directors with BIG-IP's. The infrastructure is in place and I'm not supposed to change anything on the network with the exception of the load balancers. Currently the VIP's on the Local Director load balance multiple ports. For instance, one VIP is used for 10 different ports on a group of load balanced servers. Another VIP is for 4 ports. With a Local Director you can bind multiple ports to a single VIP but you can't with an BIG-IP. I didn't configure the Local Directors. I figured that an iRule that would direct traffic sent to specific server ports to different pools would be the best solution. An F5 engineer mentioned that I could assign port 0 to the VIPs and pools which would load balance all traffic. I might have to do that if an iRule doesn't work. I would rather lock things down somewhat then allow all traffic if at all possible.

 

 

Thanks for the help!