A system and methods of monitoring sequences of operations in a process running on a computer system. The communication method may include transmitting between the locomotive and the tender car operational data captured by network components located onboard at least one of the locomotive and the tender car. An exemplary apparatus includes: at least one processor; and one or more media including processor-executable instructions that are capable of being executed by the at least one processor to direct the apparatus to perform actions including: receiving a session message having a session identifier including a host identifier; and routing the session message responsive to the host identifier.