A new Request for Comments is now available in online RFC libraries. RFC 8039 Title: Multipath Time Synchronization Author: A. Shpiner, R. Tse, C. Schelp, T. Mizrahi Status: Experimental Stream: IETF Date: December 2016 Mailbox: alexshp@mellanox.com, Richard.Tse@microsemi.com, craig.schelp@oracle.com, talmi@marvell.com Pages: 17 Characters: 39763 Updates/Obsoletes/SeeAlso: None I-D Tag: draft-ietf-tictoc-multi-path-synchronization-07.txt URL: https://www.rfc-editor.org/info/rfc8039 DOI: 10.17487/RFC8039 Clock synchronization protocols are very widely used in IP-based networks. The Network Time Protocol (NTP) has been commonly deployed for many years, and the last few years have seen an increasingly rapid deployment of the Precision Time Protocol (PTP). As time-sensitive applications evolve, clock accuracy requirements are becoming increasingly stringent, requiring the time synchronization protocols to provide high accuracy. This memo describes a multipath approach to PTP and NTP over IP networks, allowing the protocols to run concurrently over multiple communication paths between the master and slave clocks, without modifying these protocols. The multipath approach can significantly contribute to clock accuracy, security, and fault tolerance. The multipath approach that is presented in this document enables backward compatibility with nodes that do not support the multipath functionality. This document is a product of the Timing over IP Connection and Transfer of Clock Working Group of the IETF. EXPERIMENTAL: This memo defines an Experimental Protocol for the Internet community. It does not specify an Internet standard of any kind. Discussion and suggestions for improvement are requested. Distribution of this memo is unlimited. This announcement is sent to the IETF-Announce and rfc-dist lists. To subscribe or unsubscribe, see https://www.ietf.org/mailman/listinfo/ietf-announce https://mailman.rfc-editor.org/mailman/listinfo/rfc-dist For searching the RFC series, see https://www.rfc-editor.org/search For downloading RFCs, see https://www.rfc-editor.org/retrieve/bulk Requests for special distribution should be addressed to either the author of the RFC in question, or to rfc-editor@rfc-editor.org. Unless specifically noted otherwise on the RFC itself, all RFCs are for unlimited distribution. The RFC Editor Team Association Management Solutions, LLC