Title :
Reducing TE-LSP setup time by minimizing blockage with the use of pre-reservations during the path computation process
Author :
Shirazipour, Meral ; Pierre, Samuel
Author_Institution :
Dept. of Comput. & Software Eng., Ecole Polytech. de Montreal, Montreal, QC
Abstract :
A traffic engineered label switched path (TE-LSP) is usually deployed on an optimally computed path. In complex network scenarios, or when external nodes like path computation elements (PCEs) are solicited in a distributed manner, the already resource hungry task of optimal path computation could take a considerable amount of time during which network resources may fluctuate. This could result in blockage during the signaling of TE-LSPs. Given that a low setup time is often a requirement for TE-LSPs, the risk of blockage needs to be minimized. We propose a pre-reservation based solution applied to the case of inter-domain path computation. Simulation results on a real world network topology show that our method allows for better TE-LSP setup times. The results also show that our method does not deteriorate the overall network utilization.
Keywords :
multiprotocol label switching; telecommunication network topology; telecommunication signalling; telecommunication traffic; TE-LSP setup time; complex network; interdomain path computation; network resources; network topology; optimal path computation; path computation element; prereservation based solution; signaling; traffic engineered label switched path; Complex networks; Computational modeling; Computer networks; Distributed computing; Multiprotocol label switching; Network topology; Power engineering computing; Quality of service; Software engineering; Telecommunication traffic; PCE; Pre-reservation; TE-LSP; blockage; setup time;
Conference_Titel :
Electrical and Computer Engineering, 2009. CCECE '09. Canadian Conference on
Conference_Location :
St. John´s, NL
Print_ISBN :
978-1-4244-3509-8
Electronic_ISBN :
0840-7789
DOI :
10.1109/CCECE.2009.5090202