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Paper Abstract and Keywords
Presentation 2010-04-16 09:00
Bandwidth Design Method Considering Failures in IP Network
Ryuta Sugiyama, Tomonori Takeda, Yoshihiko Uematsu, Kohei Shiomoto (NTT) NS2010-9
Abstract (in Japanese) (See Japanese page) 
(in English) This paper proposes a bandwidth design method considering failures in an IP network. When we design the link bandwidth, we need to consider rerouted traffic’s bandwidth by failures in order to avoid the traffic congestion. If we knew the point-to-point traffic matrix, we could easily obtain the required link bandwidth after failures, but it is generally difficult to measure traffic matrices in a large network. The proposed method does not need traffic matrix measurement; instead, it uses link load measurement before failures which is generally easy to measure. Then, the proposed method calculates the logical least upper bound of the bandwidth variation at each link by failures by using Linear Programming (LP). Simulation results show that the link bandwidth amount designed by the proposed method is close to the actually required amount, which needs traffic matrix measurement. Particularly, compared with the simple method which does not use LP, the proposed method achieves 50 % reduction in wasted bandwidth amount. Moreover, we show that relation of the average node degree and the wasted bandwidth amount: the wasted bandwidth amount decreases as the average node degree decreases.
Keyword (in Japanese) (See Japanese page) 
(in English) Bandwidth design / Traffic matrix / IP network / Linear Programming / / / /  
Reference Info. IEICE Tech. Rep., vol. 110, no. 4, NS2010-9, pp. 43-46, April 2010.
Paper # NS2010-9 
Date of Issue 2010-04-08 (NS) 
ISSN Print edition: ISSN 0913-5685  Online edition: ISSN 2432-6380
All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
Download PDF NS2010-9

Conference Information
Committee NS  
Conference Date 2010-04-15 - 2010-04-16 
Place (in Japanese) (See Japanese page) 
Place (in English) Kagoshima Univ. 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Traffic Modeling, Network Evaluation, Performance Control, Traffic Engineering 
Paper Information
Registration To NS 
Conference Code 2010-04-NS 
Language English (Japanese title is available) 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Bandwidth Design Method Considering Failures in IP Network 
Sub Title (in English)  
Keyword(1) Bandwidth design  
Keyword(2) Traffic matrix  
Keyword(3) IP network  
Keyword(4) Linear Programming  
1st Author's Name Ryuta Sugiyama  
1st Author's Affiliation NTT Corporation (NTT)
2nd Author's Name Tomonori Takeda  
2nd Author's Affiliation NTT Corporation (NTT)
3rd Author's Name Yoshihiko Uematsu  
3rd Author's Affiliation NTT Corporation (NTT)
4th Author's Name Kohei Shiomoto  
4th Author's Affiliation NTT Corporation (NTT)
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Date Time 2010-04-16 09:00:00 
Presentation Time 25 
Registration for NS 
Paper # IEICE-NS2010-9 
Volume (vol) IEICE-110 
Number (no) no.4 
Page pp.43-46 
#Pages IEICE-4 
Date of Issue IEICE-NS-2010-04-08 

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