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Status:

EXPERIMENTAL

Author:

T. Mizrahi

Stream:

IETF

Source:

ippm (ops)

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DOI:  https://doi.org/10.17487/RFC7820

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Abstract

The One-Way Active Measurement Protocol (OWAMP) and the Two-WayActive Measurement Protocol (TWAMP) are used for performancemonitoring in IP networks. Delay measurement is performed in theseprotocols by using timestamped test packets. Some implementations usehardware-based timestamping engines that integrate the accuratetransmission time into every outgoing OWAMP/TWAMP test packet duringtransmission. Since these packets are transported over UDP, the UDPChecksum field is then updated to reflect this modification. Thisdocument proposes to use the last 2 octets of every test packet as aChecksum Complement, allowing timestamping engines to reflect thechecksum modification in the last 2 octets rather than in the UDPChecksum field. The behavior defined in this document is completelyinteroperable with existing OWAMP/TWAMP implementations.

For the definition ofStatus,seeRFC 2026.

For the definition ofStream, seeRFC 8729.