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Paper Abstract and Keywords
Presentation 2012-03-09 15:40
Flow scheduling for reducing file transmission time by OpenFlow switch
Ryota Iwami, Yoshihiko Nakayama, Hirokazu Sato, Akira Nagata, Masato Tsuru (KIT) NS2011-255
Abstract (in Japanese) (See Japanese page) 
(in English) As diverse services are emerging in the Internet, it commonly happens that a large number of users transmit large files simultaneously.
In such cases, if file transfer flows compete on a bottleneck link, the transfer completion time of each file would severely increase.
In response to the needs for reducing the transfer time of files simultaneously transmitted, the flow-based "store-and-forward" paradigm is being considered in which too much competitions of flows are avoided by time-domain scheduling.
In this report, we first show the basic advantage of this paradigm though NS-2 simulation, We also have implemented a preliminary flow scheduling system for multiple file transfer using OpenFlow switch, by which we evaluated the HTTP file download performance.
The OpenFlow-based experimental results showed that, in a $100$Mb/s bottleneck case, a serialized flow scheduling (in which the number of simultaneous transmissions on a bottleneck link is limited to one) reduces the average file transfer time as expected.
In contrast, in a $1000$Mb/s bottleneck case, the advantage was not clear mainly due to the flow change waiting time (between the preceding and the succeeding flows) caused by the preliminary implementation.
However, it is also implied that this paradigm would successfully reduce the average file transfer times in various conditions if the flow change waiting time can be reduced.
Keyword (in Japanese) (See Japanese page) 
(in English) Traffic Engineering / OpenFlow / OpenFlow Switch / Storage and Forward / / / /  
Reference Info. IEICE Tech. Rep., vol. 111, no. 468, NS2011-255, pp. 427-432, March 2012.
Paper # NS2011-255 
Date of Issue 2012-03-01 (NS) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
Copyright
and
reproduction		 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 NS2011-255

Conference Information
Committee NS IN  
Conference Date 2012-03-08 - 2012-03-09 
Place (in Japanese) (See Japanese page) 
Place (in English) Miyazaki Seagia 
Topics (in Japanese) (See Japanese page) 
Topics (in English) General 
Paper Information
Registration To NS 
Conference Code 2012-03-NS-IN 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Flow scheduling for reducing file transmission time by OpenFlow switch 
Sub Title (in English)  
Keyword(1) Traffic Engineering  
Keyword(2) OpenFlow  
Keyword(3) OpenFlow Switch  
Keyword(4) Storage and Forward  
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1st Author's Name Ryota Iwami  
1st Author's Affiliation Kyushu Institute of Technology (KIT)
2nd Author's Name Yoshihiko Nakayama  
2nd Author's Affiliation Kyushu Institute of Technology (KIT)
3rd Author's Name Hirokazu Sato  
3rd Author's Affiliation Kyushu Institute of Technology (KIT)
4th Author's Name Akira Nagata  
4th Author's Affiliation Kyushu Institute of Technology (KIT)
5th Author's Name Masato Tsuru  
5th Author's Affiliation Kyushu Institute of Technology (KIT)
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Speaker Author-2 
Date Time 2012-03-09 15:40:00 
Presentation Time 20 minutes 
Registration for NS 
Paper # NS2011-255 
Volume (vol) vol.111 
Number (no) no.468 
Page pp.427-432 
#Pages 6 
Date of Issue 2012-03-01 (NS) 

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