I. Rodríguez Martín, J. J. Salazar González, H. Yaman
We address the problem of designing a two-level network protected against single-edge failures. The problem simultaneously decides on the partition of the set of nodes into terminals and hubs, the connection of the hubs through a backbone network (first network level), and the assignment of terminals to hubs and their connection through access networks (second network level). We consider two survivable structures in both network levels. One structure is a two-edge connected network, and the other structure is a ring. There is a limit on the number of nodes in each access network, and there are fixed costs associated with the hubs and the access and backbone links. The aim of the problem is to minimize the total cost. We present integer programming formulations and valid inequalities for the different versions of the problem, solve them using a branch-and-cut algorithm, and show computational results.
Keywords: network design, survivability, hierarchical networks, valid inequalities, branch-and-cutScheduled
F4 Combinatorial Optimization 3
October 2, 2015 3:30 PM
Salón de actos