Abstract
This paper studies routing scalability in multi-domain DWDM networks. Although inter-domain provisioning has been well studied for packet/cell-switching networks, the wavelength dimension (along with wavelength conversion) poses many challenges in multi-domain DWDM settings. To address these concerns a detailed GMPLS-based hierarchical routing framework is proposed for multi-domain DWDM networks with wavelength conversion. This solution uses mesh topology abstraction schemes to hide domain-internal state. However related inter-domain routing loads can be significant here, growing by the square of the number of border nodes. To address these scalability limitations, improved inter-domain routing update strategies are also proposed and the associated performance of inter-domain lightpath RWA and signaling schemes studied.
Original language | English (US) |
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Pages (from-to) | 63-74 |
Number of pages | 12 |
Journal | Photonic Network Communications |
Volume | 17 |
Issue number | 1 |
DOIs | |
State | Published - Feb 2009 |
Externally published | Yes |
All Science Journal Classification (ASJC) codes
- Software
- Atomic and Molecular Physics, and Optics
- Hardware and Architecture
- Computer Networks and Communications
- Electrical and Electronic Engineering
Keywords
- Full wavelength conversion
- GMPLS
- Inter-domain DWDM routing
- Multi-domain networks
- Optical networks
- Topology abstraction