Distributed routing scheme for IP-based elastic optical networks (EONs)

Elastic optical networks (EONs) are gradually gaining the attention of researchers and manufacturers because EONs provide an efficient spectrum utilization compared to the common dense wavelength-division-multiplexing (DWDM). In addition, EONs use the enabling technologies such as flex-grid networks, orthogonal frequency division multiplexing (OFDM), and distance adaptive rate and modulation. Especially the key inventions of both bandwidth-variable transponders (BV-Ts) and flexi-grid reconfigurable optical add-drop multiplexers (ROADMs), which has announced the advent of the EONs paradigm. This paper addresses the problems of routing, and connection setup in IP-based EONs; therefore, a distributed routing scheme in combination with the associated connection setup signaling protocols in IP/MPLS-based EONs is proposed. To test our suggested scheme we propose a detailed IP/MPLS-based EON test framework.