Multi-links recovery algorithm in survivable WDM optical network

Abstract

A new survivable algorithm called Selforganizing Shared-Path Protection (SSPP) is proposed to tolerate multi-link failures in wavelength division multiplexing optical networks. In SSPP, ant agents are used to search primary paths, and load balancing is considered in this approach to reduce blocking probability (BP). In the approach of search backup paths, different backup path ant agents use a same kind pheromone and these ant agents are attracted by each other, so different backup paths share more backup resources. In order to tolerate multi-link failures, self-organizing ant agents search new routes for carrying the traffic affected by the failures. Simulation results show that compared with other algorithms, SSPP has lower BP, better resource utilization ratio, and higher protection ability.

A novel double-link failure restoration algorithm based on optical signal-to-noise ratio for all-optical networks

“…Zheng et al [10] proposed an algorithm that provides survivability and tolerates multi-link failures in WDM optical networks. Wason and Kaler [11] investigated the problem of enhancing double and multiple-fault restorability in path protected WRON.…”

A Shared Path Protection Mechanism Based on Delay Constraint in the Optical Network

“…In [2], a routing scheme based on ant colony optimization algorithm was present to find two paths which are maximal shared risk link group (SRLG) disjoint paths in the network for the service. In [3], an algorithm that based on the ant colony algorithm like [2] was proposed to handle multi-link failures. On the basis of biologically inspired Complex Adaptive System, a heuristic was proposed to solve the problem of survivability in optical networks [4].…”