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The introduction of Space division multiplexing (SDM) in optical networks brings new challenges for protection of networks since a lightpath can span multiple cores. In this paper, we investigate the problem of dynamic protection against two simultaneous failures in spacial division multiplexing elastic optical networks. For that, we propose a new path-protection sharing spectrum and straddling p-cycle...
Although shared path protection has been employed for protecting traffic flows against network failures, to our knowledge, it has not been considered for path protection in elastic optical networks with space division multiplexing (SDM). In this paper, we propose an algorithm to dynamically generate primary and backup paths using a shared backup scheme. The proposed algorithm is compared to the Failure-Independent...
In recent years, elastic optical networks have emerged as a solution for dealing with the diversity of the bandwidth demands of network applications. The use of only two multiplexing dimensions has limited the network capacity. To ameliorate this problem, a third dimension has been added in space division multiplexing(SDM). As transmission rates increase so does the need for protection against network...
Elastic optical networks has emerged as a solution for dealing with the diversity of bandwidth demands of network applications. However, networks are not sufficiently resilient, survivable, highly available and dependable, therefore, protection techniques have been developed to cope with failures. Among these techniques, p-cycle is a very attractive once since it provides ring-like speed of restoration...
In optical networks, failures can imply in great loss of data due to high transmission rates, leading to the need of employment of protection mechanisms. This paper introduces a novel algorithm to provide Failure-independent path protecting p-cycle with minimum interference for path protection in elastic optical networks using space division multiplexing. The proposed protection algorithm reduces...
In optical networks, faults in links and nodes cause massive loss of data even if for short periods. Therefore, protection techniques have been developed to cope with failures. Among these techniques, p-cycle is very attractive since it provides ring-like speed of restoration in mesh topologies. In recent years, the technology of flexgrid networks has emerged as a solution for dealing with the diversity...
In multilayer networks, protection can be accomplished in any of the layers. However, which layer to protect most remains an important problem. In this paper, we consider a three-layer with IP/MPLS-over-OTN-over-DWDM in which we consider an optimization modeling framework incorporating modularization of its capacity for protection in any layer. Our resulting study, conducted on two topologies, shows...
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