Open AccessDynamic virtual link mesh topology aggregation in multi-domain translucent WSON with hierarchical-PCE
Author(s) -
Ramon Casellas,
Ricardo Martínez,
Raül Muñoz,
L. Liu,
Takehiro Tsuritani,
Ramon Casellas,
M. Tsurusawa
Publication year - 2011
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.19.00b611
Subject(s) - computer science , computation , network topology , topology (electrical circuits) , polygon mesh , path (computing) , domain (mathematical analysis) , algorithm , distributed computing , computer network , mathematics , mathematical analysis , computer graphics (images) , combinatorics
We present a lab-trial of the designed and implemented path computation architecture for multi-domain translucent wavelength switched optical networks (WSON), using hierarchical Path Computation Elements (H-PCE). The approach is based on the dynamic aggregation of the domain topologies, represented as a virtual link meshes at a higher level, in order to perform dynamic domain sequence selection. We detail the extended path computation procedures, involving both domain selections considering inter domain links and segment expansions which are impairment-aware, along with the proposed control plane protocol extensions. We validate the approach with the overall performance of the end to end path computation latency, highlighting the benefits of parallelization.