Dynamic Provisioning of Optical Networks with Many-to-Many Traffic Grooming

Abstract

A large number of network applications today allow several users to interact together using the many-to-many service mode. In many-to-many communication, a session consists of a group of users (we refer to them as members), where each member transmits its traffic to all other members in the same group. In this paper, we address the problem of dynamic provisioning of optical WDM networks to support many-to-many traffic grooming. The objective is to minimize the overall blocking probability of arriving many-to-many sessions. We address the problem in both non-splitting networks where the nodes do not have optical splitting capabilities and in splitting networks where the nodes have optical splitting capabilities. In each of the two networks, we propose a number of dynamic provisioning heuristics and we provide extensive experiments to evaluate and compare their performance.

Dynamic Multicast Traffic Grooming in Optical WDM Mesh Networks: Lightpath Versus Light-Tree

“…The early-stage work on multicast traffic grooming was mainly for tackling the static problems [6][7][8][9]. With developments in optical communication technologies, dynamic multicast traffic grooming problems have become increasingly important and quite a few algorithms have been proposed [10][11][12][13][14][15][16][17][18]. Such algorithms typically utilize either lightpaths or light-trees, or both of them, to support dynamic multicast traffic.…”

“…For convenience, we term those algorithms utilizing only the lightpaths for multicast traffic grooming lightpath-based approaches, and lighttree-based approaches otherwise. Though some simple comparisons between these two groups of different approaches have been made for multicast transmission [10] and many-to-many transmission [11], to the best of our knowledge, there is no systematic comparison between their respective blocking performance.…”

Performance comparisons between lightpath and light-tree schemes in dynamic multicast traffic grooming process

“…In recent years, dynamic multicast traffic grooming problems become increasingly important and quite a few algorithms have been proposed [8][9][10][11][12][13][14][15][16][17]. Such algorithms typically utilize either lightpaths or light-trees, or both of them, to support multicast traffic.…”

“…For convenience, we term those algorithms utilizing only the lightpaths for multicast traffic grooming as lightpath based approaches; and light-tree based approaches otherwise. Although simple comparisons have been carried out to compare some different methods of these two categories for multicast transmission [8] and many-to-many transmission [9], to the best of our knowledge, there is no systematic comparison between their blocking performances.…”