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Paper Abstract and Keywords
Presentation 2011-03-11 17:50
[Encouragement Talk] A evaluation of L2 loop detection method with path-marking technique
Satoshi Narikawa, Kentaro Nishii, Hiroshi Uno (NTT) ICM2010-76
Abstract (in Japanese) (See Japanese page) 
(in English) Until now, we have proposed the Layer (L2) loop detection method with a path-marking technique to prevent the loop failure in the L2 network. There are several cases that the loop failure occurs, for example, mis-connection of network cable, mis-configuration of VLAN or redundancy protocol by the network operator or node/equipment failure. An arise of infinite loop in L2 network causes not only excess consumptions of network resources, such as transmission bandwidth and frame switching capability, but also a long service break with huge negative impacts on service assurance in the worst cases by the go-around of the L2 frame increasing the traffic. Therefore, the operators of Carrier Ethernet have put importance on the establishment of infinite loop countermeasure. Our proposed technique, the L2 loop detection method with path-marking technique, is different from the existing technique and can identify the group of switches where the causes of the loop exist, so the failed point can be identified promptly and the time of the restoration from the failure can be decreased. This paper describes the evaluation of the proposed method and shows the feasibility by the software implementation. In addition, by changing the parameters which are the numbers of VLAN and the transmission period of the loop detection frame, the evaluation of the effect to the detection time or detection performance is reported and the loops in all VLAN can be detected within several seconds.
Keyword (in Japanese) (See Japanese page) 
(in English) Carrier Ethernet / Layer2 network / loop countermeasure / operation and maintenance / / / /  
Reference Info. IEICE Tech. Rep., vol. 110, no. 466, ICM2010-76, pp. 127-132, March 2011.
Paper # ICM2010-76 
Date of Issue 2011-03-03 (ICM) 
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 ICM2010-76

Conference Information
Committee ICM  
Conference Date 2011-03-10 - 2011-03-11 
Place (in Japanese) (See Japanese page) 
Place (in English) Miyakojima Marine Terminal 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Element Management, Management Functionalities, Operations and Management Technologies 
Paper Information
Registration To ICM 
Conference Code 2011-03-ICM 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A evaluation of L2 loop detection method with path-marking technique 
Sub Title (in English)  
Keyword(1) Carrier Ethernet  
Keyword(2) Layer2 network  
Keyword(3) loop countermeasure  
Keyword(4) operation and maintenance  
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Keyword(6)  
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1st Author's Name Satoshi Narikawa  
1st Author's Affiliation Nippon Telegraph and Telephone Corporation (NTT)
2nd Author's Name Kentaro Nishii  
2nd Author's Affiliation Nippon Telegraph and Telephone Corporation (NTT)
3rd Author's Name Hiroshi Uno  
3rd Author's Affiliation Nippon Telegraph and Telephone Corporation (NTT)
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Speaker Author-1 
Date Time 2011-03-11 17:50:00 
Presentation Time 20 minutes 
Registration for ICM 
Paper # ICM2010-76 
Volume (vol) vol.110 
Number (no) no.466 
Page pp.127-132 
#Pages 6 
Date of Issue 2011-03-03 (ICM) 

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