iRules for Source IP based routing

I need an iRule for an IP forwarding VS that would source traffic from a specific IP address /service port, (suppose 10.1.100.100:1200) destined to a specific destination IP address (let's say 10.2.100.100:1200)? Moreover, I already have a generic wildcard IP forwarding VS that sources traffic from the same VLAN where this host (10.1.100.100:1200) is located and maintains connection tables for traffic destined to any IP add. I need to know if the new IP Forwarding VS I have will interrupt the wildcard IP forwarding VS we have configured? I need something which will cause least overhead, with ease of maintenance.

 

 

Thanks,

 

 

r_dynamo