PTP accuracy measurement comparison between boundary clock and VLAN priority

Koki Horita, Shota Shiobara, Takao Okamawari, Fumio Teraoka, Kunitake Kaneko

研究成果: Conference contribution

抄録

IEEE1588 (PTP: Precise Time Protocol), which aims for the sub-microsecond range of clock synchronization in a minimal network, is currently focused on highly precise clock synchronization. Boundary Clock (BC) and VLAN Priority are considered to be features that improve PTP accuracy. Although some papers addressed the accuracy, these evaluations were realized using different evaluation metrics and environments. We make them comparable to analyse the contribution of BC and VLAN Priority to precise clock synchronization. Our accuracy evaluation used PTP nodes available on the market and shows the results following the test cases defined in the ITU-T G.8261 Recommendation and IEEE1588 standard. The measurement results show that the accuracy was better than 200 nanoseconds with BC enabled, while it was about one microsecond with BC disabled. We observed that the accuracy was improved to approximately 850 nanoseconds when VLAN Priority was enabled.

本文言語English
ホスト出版物のタイトルISPCS 2017 - International IEEE Symposium on Precision Clock Synchronization for Measurement, Control, and Communication, Proceedings
出版社IEEE Computer Society
ISBN(電子版)9781509057177
DOI
出版ステータスPublished - 2017 10 2
イベント11th International IEEE Symposium on Precision Clock Synchronization for Measurement, Control, and Communication, ISPCS 2017 - Monterey, United States
継続期間: 2017 8 272017 9 1

出版物シリーズ

名前IEEE International Symposium on Precision Clock Synchronization for Measurement, Control, and Communication, ISPCS
ISSN(印刷版)1949-0305
ISSN(電子版)1949-0313

Other

Other11th International IEEE Symposium on Precision Clock Synchronization for Measurement, Control, and Communication, ISPCS 2017
国/地域United States
CityMonterey
Period17/8/2717/9/1

ASJC Scopus subject areas

  • コンピュータ ネットワークおよび通信
  • 制御およびシステム工学

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