This work describes a distributed framework for routing path optimization in Optical Burst-Switched (OBS) networks that loosely mimics the foraging behaviour of ants observed in nature, which in the past has originated the Ant Colony Optimization (ACO) metaheuristic. The framework consists of additional data structures stored at the nodes and of special control packets that traverse the network...

Multi Protocol Label Switching (MPLS) as a new technique assigns a short label to each packet at the ingress node of MPLS network and packets are forwarded according to these labels. The capability of MPLS of explicit routing as well as of splitting of the traffic on several paths allows load balancing. The report concentrates on two previously known approximations of the minimum-delay algorith...

Network operators control the flow of traffic through their networks by adapting the configuration of the underlying routing protocols. For example, they tune the integer link weights that routing protocols like OSPF use to do distributed forwarding of packets. The resulting optimization problem by the operator—to find the best link weights for a given topology and traffic matrix—is well-known ...

In this paper, a robust optimization approach is proposed to design a dynamic cellular manufacturing system (DCMS) under uncertainty of processing time of products. In addition, a mathematical model considering cell formation, inter-cell design and production planning under a dynamic environment (i.e., product mix and demand are changed in each period) is presented. Therefore, reconfiguration b...

The vehicle routing problem (VRP) is one of the most important combinational optimization problems that has nowadays received much attention because of its real application in industrial and service problems. The VRP involves routing a fleet of vehicles, each of them visiting a set of nodes such that every node is visited by exactly one vehicle only once. So, the objective is to minimize the to...

We consider a class of routing optimization problems under uncertainty in which all decisions are made before the uncertainty is realized. The objective is to obtain optimal routing solutions that would, as much as possible, adhere to a set of specified requirements after the uncertainty is realized. These problems include finding an optimal routing solution to meet the soft time window require...

Mobile ad hoc network (MANET) is a impartial network capable of sovereign operation where nodes communicate with each other without the need of any obtainable infrastructure. Nodes are mobile since topology is very dynamic and are often vulnerable to failure thus making mobile ad hoc networks open to threats and attacks. Nodes sometimes fail to transmit and start dropping packets during the tra...

Ad-Hoc wireless networks are self-organizing multi-hop wireless networks, where all the nodes take part in the process of forwarding packets. Ad-Hoc networks can quickly and inexpensively be set up as needed since they do not require any fixed infrastructure, such as base stations or routers. Therefore, they are highly applicable in many fields such as emergency deployments and community networ...