This paper proposes a new one-way resource reservation protocol for optical burst switching networks (OBS), called Enhanced Just-in-Time Plus (E-JIT+). The protocol is described in detail, as well as its formal specification is presented, following an extended finite state machine approach. The performance evaluation of E-JIT+ is analyzed in comparison with other proposed OBS protocols (JIT+ and E-JIT) for the following network topologies: rings, degree-three, degree-four, and degree-four chordal rings, mesh-torus, NSFNET, ARPANET, FCCN-Net, and the European optical network (EON). This study evaluates and compares the performance of the different protocols in terms of burst loss probability taking into account the most important OBS network parameters. It was shown that E-JIT+ performs better than available one-way resource reservation protocols for all the evaluated network topologies. Moreover, it was observed the scalability of
E-JIT+ and when the network traffic increases the burst loss probability also increases leading to a worse network performance.