[Ntp] I-D Action: draft-ietf-ntp-packet-timestamps-07.txt
internet-drafts@ietf.org Tue, 20 August 2019 11:26 UTC
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Subject: [Ntp] I-D Action: draft-ietf-ntp-packet-timestamps-07.txt
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A New Internet-Draft is available from the on-line Internet-Drafts directories. This draft is a work item of the Network Time Protocol WG of the IETF. Title : Guidelines for Defining Packet Timestamps Authors : Tal Mizrahi Joachim Fabini Al Morton Filename : draft-ietf-ntp-packet-timestamps-07.txt Pages : 19 Date : 2019-08-20 Abstract: Various network protocols make use of binary-encoded timestamps that are incorporated in the protocol packet format, referred to as packet timestamps for short. This document specifies guidelines for defining packet timestamp formats in networking protocols at various layers. It also presents three recommended timestamp formats. The target audience of this memo includes network protocol designers. It is expected that a new network protocol that requires a packet timestamp will, in most cases, use one of the recommended timestamp formats. If none of the recommended formats fits the protocol requirements, the new protocol specification should specify the format of the packet timestamp according to the guidelines in this document. The rationale behind defining a relatively small set of recommended formats is that it enables significant reuse; network protocols can typically reuse the timestamp format of the Network Time Protocol (NTP) or the Precision Time Protocol (PTP), allowing a straightforward integration with an NTP or a PTP-based timer. Moreover, since accurate timestamping mechanisms are often implemented in hardware, a new network protocol that reuses an existing timestamp format can be quickly deployed using existing hardware timestamping capabilities. The IETF datatracker status page for this draft is: https://datatracker.ietf.org/doc/draft-ietf-ntp-packet-timestamps/ There are also htmlized versions available at: https://tools.ietf.org/html/draft-ietf-ntp-packet-timestamps-07 https://datatracker.ietf.org/doc/html/draft-ietf-ntp-packet-timestamps-07 A diff from the previous version is available at: https://www.ietf.org/rfcdiff?url2=draft-ietf-ntp-packet-timestamps-07 Please note that it may take a couple of minutes from the time of submission until the htmlized version and diff are available at tools.ietf.org. Internet-Drafts are also available by anonymous FTP at: ftp://ftp.ietf.org/internet-drafts/
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