TY - GEN
T1 - PTP accuracy measurement comparison between boundary clock and VLAN priority
AU - Horita, Koki
AU - Shiobara, Shota
AU - Okamawari, Takao
AU - Teraoka, Fumio
AU - Kaneko, Kunitake
N1 - Publisher Copyright:
© 2017 IEEE.
Copyright:
Copyright 2017 Elsevier B.V., All rights reserved.
PY - 2017/10/2
Y1 - 2017/10/2
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=85034070963&partnerID=8YFLogxK
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U2 - 10.1109/ISPCS.2017.8056748
DO - 10.1109/ISPCS.2017.8056748
M3 - Conference contribution
AN - SCOPUS:85034070963
T3 - IEEE International Symposium on Precision Clock Synchronization for Measurement, Control, and Communication, ISPCS
BT - ISPCS 2017 - International IEEE Symposium on Precision Clock Synchronization for Measurement, Control, and Communication, Proceedings
PB - IEEE Computer Society
T2 - 11th International IEEE Symposium on Precision Clock Synchronization for Measurement, Control, and Communication, ISPCS 2017
Y2 - 27 August 2017 through 1 September 2017
ER -