How to configure F5 virtual servers to receive hundreds of thousands of concurrent connections?

Hi,

I created a virtual server with 2 servers in its pool. The virtual servers and its members are setup to have Connection Limit = 0 and . I have a load client that try to open a new connection to the virtual servers every second. However, after getting around 1500 connections, i saw reset signals from the virtual server to my client. How can I increase the number of concurrent connection that my F5 can receive? I attach here is the settings of my virtual server.

Thanks,

Sean