Title :
A dynamic routing and wavelength assignment algorithm in IP/MPLS over WDM networks
Author :
Rongxi, He ; Zhizhong, Zhung ; Lemin, Li ; Sheng, Wung
Author_Institution :
Nat. Key Lab of Broadband Opt. Fiber Transmission & Commun. Networks, Univ. of Electron. Sci. & Technol. of China, Chengdu, China
fDate :
29 June-1 July 2002
Abstract :
The paper investigates the integrated routing (IR) algorithm in IP/MPLS over WDM networks, and presents a simple dynamic IR scheme, bandwidth defragmenting method (BDM). It makes use of the statistical information of link-state and resource availability to determine whether to route an arriving label switched path (LSP) request over the existing topology or to open new wavelength paths. The IR algorithm based on BDM can reduce the number of bandwidth fragments and increase the utility of network resource. Simulation results show that the scheme can improve the performance of the network significantly.
Keywords :
graph theory; multiprotocol label switching; network topology; optical fibre networks; resource allocation; routing protocols; statistical analysis; wavelength division multiplexing; IP/MPLS; LSP; RWA algorithm; WDM networks; bandwidth defragmenting method; dynamic routing; label switched path; layered-graph model; link-state; network topology; resource availability; routing and wavelength assignment algorithm; routing protocol; statistical information; Bandwidth; Intelligent networks; Multiprotocol label switching; Network topology; Telecommunication traffic; Traffic control; WDM networks; Wavelength assignment; Wavelength division multiplexing; Wavelength routing;
Conference_Titel :
Communications, Circuits and Systems and West Sino Expositions, IEEE 2002 International Conference on
Print_ISBN :
0-7803-7547-5
DOI :
10.1109/ICCCAS.2002.1180747
