Link-state update in wavelength-routed networks

• Main Author: Shu, Shen
• Other Authors: Xiao, Gaoxi
• Format: Theses and Dissertations
• Published: 2008
• Subjects: DRNTU::Engineering::Electrical and electronic engineering::Computer hardware, software and systems; DRNTU::Engineering::Computer science and engineering::Computer systems organization::Computer-communication networks
• Online Access: https://hdl.handle.net/10356/3440
• Institution: Nanyang Technological University

Link-state update is a critical component of the routing protocol in wavelength-routed networks (WRNs). High-frequency updates impose heavy traffic on network control channels as well as excessive burden of electronic processing, while stale link-state information seriously degrades network performance. In this thesis, we present the first in-depth study on the benefits of advertising wavelength availability. We introduce a general model of the important parameters affecting the performance and overhead of Link-State based Lightpath Establishment. The fundamentals of balancing performance and overhead are investigated and existing link-state update methods for WRNs, namely periodic update and triggered update, are evaluated. More importantly, this thesis proposes a novel link-state update method that successfully enforces the control bandwidth quota while achieving much lower blocking probability than existing link-state update methods.