Here, I will explain how the three-layer hierarchical design can be used to create a modular network. Layers, layers, and more layers ...

The Hierarchical Design Model Cisco has used the three-level Hierarchical Design Model for years. The hierarchical design model divides a network into three layers: Access: Provides end-user ...

In this paper we develop a new heuristic for the hierarchical network design problem. The heuristic is based upon Lagrangian relaxation of a reformulation of the problem. In addition, we develop a ...