iRULE: forwarding virtual for sql ports

If you have loose init and reset on timeout enabled the timeout shouldn’t matter. It will add the connection to the session tables regardless of it existing or not and won’t send a reset, so it’s basically acting as a router. What’s the rest of the app look like or what’s going on when you get the timeout? Maybe an asynchronous routing issue with the change in environments, etc? Can you reproduce it and watch a trace of the traffic on that VLAN to validate your thoughts that it’s the forwarding VIP?

Regarding your actual question though, it’s just a function of what’s available in the processing of the virtual. If TCP is only available with a certain profile, and the virtual type you have doesn’t support that profile, it means you don’t have access to those variables or commands. The performance virtuals have a lot disabled so that TMM can quickly forward the packets without a lot of CPU hit or entirely in hardware if the platform supports it. There isn’t really a workaround other than choosing a different type of virtual server, which probably isn’t possible in this case.