This subsection presents an analysis of performance and efficiency of the three heuristics described in Section 3 vianumerical experiments. First, for the 6-node network topology shown in Fig. 2, all three heuristics
gave the same result of the maximum number of required fibers, i.e., maximally 2 fibers are required in
the physical links. In Section 1, the result obtained by directly solving the ILP formulation was 1, so the results of the heuristics are acceptable