P802.1ASdm – Hot Standby

This amendment specifies protocols, procedures, and managed objects for hot standby without use of the Best Master Clock Algorithm (BMCA), for time-aware systems, including:

  • A function that transforms the synchronized times of two generalized Precision Time Protocol (gPTP) domains into one synchronized time for use by applications;
  • A function that directs the synchronized time of one gPTP domain into a different gPTP domain; and
  • Mechanisms that determine whether a gPTP domain has sufficient quality to be used for hot standby.

This amendment also addresses errors and omissions in the description of existing functionality.

Current Status

Status PAR approved
Current Draft (not available yet)
PAR & CSD Full title: Draft Standard for Local and Metropolitan Area Networks: Timing and Synchronization for Time-Sensitive Applications — Amendment: Hot Standby
PAR (Approved: 03 Jun 2020; Expires: 31 Dec 2024)
CSD
Editor Geoffrey Garner
Web page Craig Gunther

Archive

Date Document
not available yet

The above list includes only the latest version of (proposed) dispositions. See the project folder for a complete list). The dates listed are the website file dates; they may differ from the creation dates in the documents.

Contributions

Important NOTICE on contributions.

Date Document
09 Mar 2020 4 domains
(dm-cummings-as-4-domains-0320-v04.pdf)
18 Feb 2020 Multiple domains
(dm-potts-as-hot-standby-multiple-domains-0220-v01.pdf)
16 Jan 2020 802.1AS Hot Standby Amendment: Scope Discussion
(new-cummings-as-hot-standby-scope-0120-v02.pdf)

The above list includes only the latest version of updated documents and omits those superseded by subsequent discussion or inclusion in the current draft (see filenames beginning “dm-” in the 2020 or 2021 public directories for a complete list). The dates listed are the website file dates; they may differ from the creation dates in the documents.

Please contact Craig Gunther if you have comments to this page.

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