Presentation 2022-11-21
Massive & Passive RTT Estimation
Kaito Sawada, Ryo Nakamura, Keisuke Uehara,
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Abstract(in Japanese) (See Japanese page)
Abstract(in English) Quality of Experience (QoE) is important in Internet services, and Round Trip Time (RTT) is one of the indicators. While it is easy to measure the RTT from a host to many destinations. But, it is difficult for network administrators to know the RTT between a third-party user and the destination with which the user is communicating. In this study, we aimed to solve this problem by implementing an algorithm based on the TCP RTT measurement method devised by Hao Jiang et al. on a P4 switch. As a result, we implemented a function to measure the RTT between a source and a destination in traffic forwarded by a P4 switch and confirmed that it works. On the other hand, in an environment where the throughput performance of P4 switches is maximized, we found that there are issues due to the size of the SRAM in the hardware P4 switches.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) RTT / P4 / Quality of Experience / TCP / Backbone Network
Paper # IA2022-39
Date of Issue 2022-11-14 (IA)

Conference Information
Committee IA
Conference Date 2022/11/21(1days)
Place (in Japanese) (See Japanese page)
Place (in English) Bandai Civic Hall (Niigata)
Topics (in Japanese) (See Japanese page)
Topics (in English) Student Sessions, etc. (cosponsored by Committee on Internet Technology)
Chair Tomoki Yoshihisa(Osaka Univ.)
Vice Chair Yusuke Sakumoto(Kwansei Gakuin Univ.) / Yuichiro Hei(KDDI Research) / Hiroshi Yamamoto(Ritsumeikan Univ.)
Secretary Yusuke Sakumoto(Osaka Univ.) / Yuichiro Hei(Kogakuin Univ.) / Hiroshi Yamamoto(Kyushu Inst. of Tech.)
Assistant Daisuke Kotani(Kyoto Univ.) / Ryo Nakamura(Fukuoka Univ.) / Ryo Nakamura(Univ. of Tokyo)

Paper Information
Registration To Technical Committee on Internet Architecture
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) Massive & Passive RTT Estimation
Sub Title (in English)
Keyword(1) RTT
Keyword(2) P4
Keyword(3) Quality of Experience
Keyword(4) TCP
Keyword(5) Backbone Network
1st Author's Name Kaito Sawada
1st Author's Affiliation Keio University(Keio)
2nd Author's Name Ryo Nakamura
2nd Author's Affiliation The University of Tokyo(UTokyo)
3rd Author's Name Keisuke Uehara
3rd Author's Affiliation Keio University(Keio)
Date 2022-11-21
Paper # IA2022-39
Volume (vol) vol.122
Number (no) IA-268
Page pp.pp.14-19(IA),
#Pages 6
Date of Issue 2022-11-14 (IA)