Dynamic Traffic Grooming in Flexible Multi-Layer IP/Optical Networks

Author

Wan, Xin ; Li, Yanwei ; Zhang, Hanyi ; Zheng, Xiaoping

Author_Institution

Dept. of Electron. Eng., Tsinghua Univ., Beijing, China

Volume

16

Issue

12

fYear

2012

fDate

12/1/2012 12:00:00 AM

Firstpage

2079

Lastpage

2082

Abstract

This letter introduces a dynamic traffic grooming approach in bandwidth-flexible multi-layer IP/optical networks. A novel IP/optical multi-layer routing and grooming algorithm is proposed to calculate the routes for bitrate-flexible IP traffic over spectrum-flexible optical networks. The algorithm employs a bandwidth threshold, an auxiliary graph, and two grooming policies. Numerical results show that the dynamic grooming approach achieves lower blocking probabilities compared with IP-over-WDM and non-grooming flexible networks.

Keywords

IP networks; graph theory; optical fibre networks; telecommunication network routing; telecommunication traffic; IP-optical multilayer routing; IP-over-WDM; auxiliary graph; bandwidth flexible multilayer IP-optical networks; bandwidth threshold; bitrate-flexible IP traffic; blocking probability; dynamic traffic grooming approach; grooming policies; nongrooming flexible networks; spectrum-flexible optical networks; Bandwidth; Heuristic algorithms; IP networks; Multiprotocol label switching; Optical fiber networks; Optical switches; Topology; Spectrum-flexible optical networks; dynamic traffic grooming; routing and spectrum assignment; virtual topology;

fLanguage

English

Journal_Title

Communications Letters, IEEE

Publisher

ieee

ISSN

1089-7798

Type

jour

DOI

10.1109/LCOMM.2012.102612.122004

Filename

6343253