Subject: [TICTOC] New Liaison Statement, "LS on ITU-T Q14/15 work on the management model for time and frequency synchronization"

From: Liaison Statement Management Tool <[email-masked]>
Date: Tue, 08 Mar 2016 10:40:39 -0800

Title: LS on ITU-T Q14/15 work on the management model for time and frequency synchronization
Submission Date: 2016-03-08
URL of the IETF Web page: https://datatracker.ietf.org/liaison/1461/

From: "Hiroshi Ota" <[email-masked]>
To: Yaakov Stein <[email-masked]>, Karen O'Donoghue <[email-masked]>
Cc: Terry Manderson <[email-masked]>,Scott Mansfield <[email-masked]>,Yaakov Stein <[email-masked]>,John Drake <[email-masked]>,Timing over IP Connection and Transfer of Clock Discussion List <[email-masked]>,Brian Haberman <[email-masked]>,Karen O'Donoghue <[email-masked]>,[email-masked],
Response Contacts: [email-masked], [email-masked]
Technical Contacts: 
Purpose: For information

Body: ITU-T Q14/15 has initiated work on the development of a protocol neutral information model in UML to support the management of both time and frequency synchronization. Q14/15 also plans to map the UML model into a YANG data model for the management of time synchronization. This work does not cover time of day distribution (e.g., using NTP).

Management view of the synchronization network

A NE that supports a slave clock function (i.e. a local frequency or time reference) will terminate a number of interfaces that support trails and links in one or more layer networks. These link may support user traffic and/or synchronization information.

As described in Appendix A, the synchronization distribution trails will be present within some of these interfaces. The selection of the synchronization input and the distribution of the output of the slave clock are independent. For example at the edge of a network a NE may have two links that support an incoming synchronization signal but the output of the slave clock would not be distributed to other NEs. It is more convenient to describe and model synchronization using uni-directional constructs.

Please see attachment for liaison details.

Attachments:

    LS on ITU-T Q14/15 work on the management model for time and frequency synchronization
    https://www.ietf.org/lib/dt/documents/LIAISON/liaison-2016-03-08-itu-t-sg-15-tictoc-ls-on-itu-t-q1415-work-on-the-management-model-for-time-and-frequency-synchronization-attachment-1.pdf