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Paper Abstract and Keywords
Presentation 2026-08-07 13:45
IP Anycast-Based Redundancy for Distributed Hash Table
Yuki Shimizu, Soki Koizumi, Tsuyoshi Yamashita, Kunitake Kaneko (Keio Univ.) IN2026-31
Abstract (in Japanese) (See Japanese page) 
(in English) To manage increasingly diverse and voluminous data across a wide area and enable users
worldwide to search for and retrieve it, a distributed hash table (DHT) is useful,
as it distributes management by associating data hash values with their storage servers.
To operate a DHT on a global scale, server redundancy is essential to
maintain availability even in the event of server failures. However,
in existing redundant DHTs, the number of management targets increases
in proportion to the number of redundant servers, and the cost of management
messages between servers rises, putting a strain on communication bandwidth.
Therefore, in this study, we propose a method to reduce the cost of management
messages by having multiple servers share the same IP address via IP Anycast and
consolidating the management targets on the DHT. Furthermore, in the event of a failure,
availability is maintained by switching the route to a surviving server at the IP layer.
Evaluation results using Chord, a type of DHT, demonstrated that the proposed method
can reduce management message overhead by up to approximately 65% compared to existing methods,
while maintaining a success rate of about 96% for data registration and
retrieval even under failure conditions.
Keyword (in Japanese) (See Japanese page) 
(in English) distributed systems / distributed hash table (DHT) / IP Anycast / / / / /  
Reference Info. IEICE Tech. Rep., vol. 126, no. 144, IN2026-31, pp. 109-115, Aug. 2026.
Paper # IN2026-31 
Date of Issue 2026-07-30 (IN) 
ISSN 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 IN2026-31

Conference Information
Committee IN CCS  
Conference Date 2026-08-06 - 2026-08-07 
Place (in Japanese) (See Japanese page) 
Place (in English) Sapporo Educaton and Culture Hall 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Network Science, Future Network, Cloud/SDN/Virtualization, Contents Delivery/Contents Exchange, and others 
Paper Information
Registration To IN 
Conference Code 2026-08-IN-CCS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) IP Anycast-Based Redundancy for Distributed Hash Table 
Sub Title (in English)  
Keyword(1) distributed systems  
Keyword(2) distributed hash table (DHT)  
Keyword(3) IP Anycast  
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1st Author's Name Yuki Shimizu  
1st Author's Affiliation Keio University (Keio Univ.)
2nd Author's Name Soki Koizumi  
2nd Author's Affiliation Keio University (Keio Univ.)
3rd Author's Name Tsuyoshi Yamashita  
3rd Author's Affiliation Keio University (Keio Univ.)
4th Author's Name Kunitake Kaneko  
4th Author's Affiliation Keio University (Keio Univ.)
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Speaker Author-1 
Date Time 2026-08-07 13:45:00 
Presentation Time 25 minutes 
Registration for IN 
Paper # IN2026-31 
Volume (vol) vol.126 
Number (no) no.144 
Page pp.109-115 
#Pages 7 
Date of Issue 2026-07-30 (IN) 

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