Pathfinding architectures for interdomain Bandwidth Broker operation

This paper deals with bandwidth brokers and their inter-domain operation. The basic issues for inter-domain operation are discussed and we try to approach the most demanding issues as the selection of the best inter domain routing path (pathfinding). Generally, we discuss two models for inter domain routing through bandwidth broker, analyzing their advantages and comparing them. Also, we simulated the second one (generalized distributed pathfinding) trying to evaluate its performance. Finally, we discuss the simulation´s results and present how this model should be incorporated in normal operation routing of commercial ISPs or academic networks that works on a federated way