ACO based single link failure recovery in all optical networks

An optical network has a major role to play in modern computer networks. The optical network is providing a platform for transmission of huge amount of data at very high speed. These networks may fail due to various reasons. These failures may result in significant loss of revenue and time. Since this loss has a considerable effect on user and service provider, so the survivability of these optical networks has become very important issue to address. The survivability of a network is the capability of network to provide continuous services. The link failure is one of the very common failures in optical networks. A failed link is required to restore accurately and quickly so that failure impact can be minimized. In this paper, we have proposed a method to address survivability in all optical networks in case of single link failure. This method minimizes the recovery time for single link failure. Ant Colony Optimization (ACO) technique along with adjacent shortest cycle is used to calculate alternative path for retransmission of data.