Routing and Spectrum Allocation Using Elastic Optical Network.

Abstract

With the rapid growth of cloud data, the internet of things, social media applications, high-end video streaming, etc WDM[3][3] is slowly becoming insufficient for all these future growths. The elastic optical network is slowly becoming the solution for these problems in the fiber-optic network. It can provide flexibility in the spectrum assignment and can even provide greater bandwidth. But with all these benefits come the problem of routing and spectrum allocation(RSA). In this problem, the frequency slots should be allocated to maintain continuity, contiguity, and nonoverlapping constraints. The paper explores the feasible way of solving the problem so that requests can be transferred through the network with minimum cost production.. algorithms that can solve RSA problem with static traffic demand. So, in this paper we incorporate a layered approach to de-sign efficiently integrated MC-RSA for serving multicast requests in EONs. This algorithm decomposes the physical structure of the graph into several layered auxiliary graphs according to the given multicast request . Then depending on the bandwidth we create a multicast light tree . It solves the routing and spectrum allocation problem by first finding the k-shortest path in the first available contiguous slots. However, the main goal is to allocate the connection request list that we have implemented only if there are available contiguous slots. We have tried to decode the algorithm and make it as efficient as possible.