HOTS: An OWAMP-Compliant Hardware Packet Timestamper

  • Zhang Shu
  • Katsushi Kobayashi
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 3431)


Accurate timestamps on both the sender and the receiver side are crucial for one-way delay (OWD) measurements. Traditionally, the methods of (i) peering with NTP servers, and (ii) connecting to a time source directly, have been used to maintain the accuracy of a measurement system clock. However, it has became clear that such methods suffer from errors to different extents.


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    Shalunov, S., Teitelbaum, B., Karp, A., Boote, J.W., Zekauskas, M.J.: Aug.) A one-way active measurement protocol (OWAMP). Internet draft. [Online]. Available (2004),
  2. 2.
    DAG network monitoring interface cards. [Online]. Available:
  3. 3.
    Asia-Pacific Advanced Network. [Online]. Available:
  4. 4.
    Internet2 OWAMP implementation. [Online]. Available:

Copyright information

© Springer-Verlag Berlin Heidelberg 2005

Authors and Affiliations

  • Zhang Shu
    • 1
  • Katsushi Kobayashi
    • 1
  1. 1.National Institute of Information and Communications TechnologyJapan

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