Guidelines for Defining Packet Timestamps

Document Type Replaced Internet-Draft (ntp WG)
Authors Tal Mizrahi  , Joachim Fabini  , Al Morton 
Last updated 2017-10-26 (latest revision 2017-09-24)
Replaced by RFC 8877
Stream IETF
Intended RFC status (None)
Expired & archived
pdf htmlized (tools) htmlized bibtex
Stream WG state Adopted by a WG
Document shepherd No shepherd assigned
IESG IESG state Replaced by draft-ietf-ntp-packet-timestamps
Consensus Boilerplate Unknown
Telechat date
Responsible AD (None)
Send notices to (None)

This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


This document specifies guidelines for defining binary 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.


Tal Mizrahi (
Joachim Fabini (
Al Morton (

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)