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Paper Abstract and Keywords
Presentation 2024-03-01 10:45
ECN Congestion Control with Gradient of Queue Length for Inter-Datacenter Gateway Proxy
Keita Aoki, Miki Yamamoto (Kansai Univ.) NS2023-211
Abstract (in Japanese) (See Japanese page) 
(in English) For data replication and database synchronization, inter-DC (Data Center) communications play an important role. Inter-DC flows share network resources in DC with intra-DC traffic. Congestion control for an intra-DC flow reacts earlier than an inter-DC flow due to its significantly shorter RTT. This leads to unfairness between these flows. This technical problem can occur both of sender-side and receiver-side DCN. In this paper, we focus on the receiver-side DCN because its congestion point is further from the sender when compared with the sender-side DCN. DC-PEP which divides congestion control loop at the receiver-side DCN gateway has been proposed. In this paper, we first evaluate DC-PEP performance with ECN which controls queue length at DC-PEP. Our preliminary evaluation results show that DC-PEP with ECN slightly improves fairness between inter and intra-DC flows, but throughput of an inter-DC flow is regulated by buffer depletion at DC-PEP. In this paper, we propose a new ECN mechanism using queue length gradients, DC-PEP with G-ECN (Gradient-based ECN) which enables prediction of queue length growth and earlier generation of ECN. Our performance evaluation results show that DC-PEP with G-ECN improves throughput performance of inter-DC flows and significantly improves fairness between intra and inter-DC flows.
Keyword (in Japanese) (See Japanese page) 
(in English) Datacenter Network / Congestion Control / ECN / / / / /  
Reference Info. IEICE Tech. Rep., vol. 123, no. 397, NS2023-211, pp. 230-235, Feb. 2024.
Paper # NS2023-211 
Date of Issue 2024-02-22 (NS) 
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 NS2023-211

Conference Information
Committee NS IN  
Conference Date 2024-02-29 - 2024-03-01 
Place (in Japanese) (See Japanese page) 
Place (in English) Okinawa Convention Center 
Topics (in Japanese) (See Japanese page) 
Topics (in English) General 
Paper Information
Registration To NS 
Conference Code 2024-02-NS-IN 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) ECN Congestion Control with Gradient of Queue Length for Inter-Datacenter Gateway Proxy 
Sub Title (in English)  
Keyword(1) Datacenter Network  
Keyword(2) Congestion Control  
Keyword(3) ECN  
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1st Author's Name Keita Aoki  
1st Author's Affiliation Kansai University (Kansai Univ.)
2nd Author's Name Miki Yamamoto  
2nd Author's Affiliation Kansai University (Kansai Univ.)
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Speaker Author-1 
Date Time 2024-03-01 10:45:00 
Presentation Time 25 minutes 
Registration for NS 
Paper # NS2023-211 
Volume (vol) vol.123 
Number (no) no.397 
Page pp.230-235 
#Pages 6 
Date of Issue 2024-02-22 (NS) 

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