On power-law relationships of the Internet topology
Proceedings of the conference on Applications, technologies, architectures, and protocols for computer communication
On the origin of power laws in Internet topologies
ACM SIGCOMM Computer Communication Review
Measuring ISP topologies with rocketfuel
Proceedings of the 2002 conference on Applications, technologies, architectures, and protocols for computer communications
On Wavelength Assignment in WDM Optical Networks
MPPOI '97 Proceedings of the 4th International Conference on Massively Parallel Processing Using Optical Interconnections
SFCS '88 Proceedings of the 29th Annual Symposium on Foundations of Computer Science
IEEE Communications Magazine
IEEE Journal on Selected Areas in Communications
A summary of the HORNET project: a next-generation metropolitan area network
IEEE Journal on Selected Areas in Communications
Hi-index | 0.00 |
When designing an all-optical network, the designers face a choice of laying down more fibers or increasing the number of wavelengths. Although either choice could be used to support new connections, one increases the link cost and the other increases the node (wavelength equipments) cost. The tradeoffs between link and node cost are not well understood. Using the efficient physical topology design algorithm that we propose, we study this tradeoff. We use the asymptotic growth rate of the provisioned capacity as a metric to compare various design alternatives. A higher asymptotic growth rate translates directly into a higher deployment cost for large networks. Our study shows that taking fiber length into consideration can lead to lower capacity requirement. We also find that a sufficiently large fiber-to-node ratio is necessary in order to minimize the asymptotic growth in the provisioned capacity, increase capacity utilization and minimize the need for wavelength conversion. We study a real network and find that its fiber-to-node ratio is too low. As a result, large provisioned capacity is required and less than 55% of the capacity is usable. By increasing the ratio, we can reduce the provisioned capacity and achieve close to 80% utilization.