how to make static nat from one subnet to another

Hello, I couldn't find any information how to make static nat from one subnet to another. For example from 10.1.1.0/24 to 10.1.2.0/24, and 10.1.1.1 will be mapped to 10.1.2.1 and so on. Is it possible on ltm? We need it, because connections to virtual servers can be initiated from server pool subnet, and they need to differentiate from what source it was initiated.

Thanks in advance.