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ITU-T G.873.1

Optical transport network: Linear protection

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Organization: ITU-T
Publication Date: 1 October 2017
Status: active
Page Count: 40
scope:

This Recommendation defines the automatic protection switching (APS) protocol and protection switching operation for the linear protection schemes for the optical transport network (OTN) at the optical data unit k (ODUk) level. These schemes are based on the generic linear protection specifications in [ITU-T G.808.1]. Linear protection schemes considered in this Recommendation are:

- ODUk subnetwork connection protection with inherent monitoring (1+1, 1:n);

- ODUk subnetwork connection protection with non-intrusive monitoring (1+1);

- ODUk subnetwork connection protection with sublayer monitoring (1+1, 1:n);

- ODUk compound link subnetwork connection group protection with inherent monitoring (1+1, 1:1).

In addition, client-related protection architectures are described

Document History

G.873.1 AMD 1
February 1, 2022
Optical transport network: Linear protection Amendment 1
This Recommendation defines the automatic protection switching (APS) protocol and protection switching operation for linear protection schemes of the optical transport network (OTN) at the optical...
ITU-T G.873.1
March 1, 2020
Optical transport network: Linear protection Corrigendum 1
A description is not available for this item.
ITU-T G.873.1
October 1, 2017
Optical transport network: Linear protection
This Recommendation defines the automatic protection switching (APS) protocol and protection switching operation for the linear protection schemes for the optical transport network (OTN) at the...
G.873.1 AMD 1
December 1, 2014
(Pre-Published) Optical Transport Network (OTN): Linear protection Amendment 1
A description is not available for this item.
ITU-T G.873.1
May 1, 2014
Optical transport network (OTN): Linear protection
This Recommendation defines the automatic protection switching (APS) protocol and protection switching operation for the linear protection schemes for the optical transport network (OTN) at the...
ITU-T G.873.1
October 1, 2012
Optical Transport Network (OTN): Linear protection Amendment 1
A description is not available for this item.
ITU-T G.873.1
July 1, 2011
Optical Transport Network (OTN): Linear protection
This Recommendation defines the APS protocol and protection switching operation for the linear protection schemes for the Optical Transport Network at the Optical Channel Data Unit (ODUk) level....
ITU-T G.873.1
March 1, 2006
Optical Transport Network (OTN): Linear protection
A description is not available for this item.
ITU-T G.873.1
March 1, 2003
Optical Transport Network (OTN): Linear protection SERIES G: TRANSMISSION SYSTEMS AND MEDIA, DIGITAL SYSTEMS AND NETWORKS Digital networks – Optical transport networks
A description is not available for this item.
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References

This document references:
ITU-T G.798 - Characteristics of optical transport network hierarchy equipment functional blocks
Published by ITU-T on December 1, 2017
This Recommendation covers the functional requirements of optical transport network functionality within equipment. This Recommendation uses the specification methodology defined in [ITU-T G.806], in...
This document references:
ITU-T G.872 - Architecture of the optical transport network Amendment 1
Published by ITU-T on January 1, 2021
This Recommendation describes the functional architecture of the optical transport network (OTN) using the modelling methodology described in [ITU-T G.800], [ITU-T G.805] for the digital layer...
This document references:
ITU-T Y.1331 - Interfaces for the optical transport network
Published by ITU-T on June 1, 2020
The optical transport network (OTN) supports the operation and management aspects of optical networks of various architectures, e.g., point-to-point, ring and mesh architectures. This Recommendation...
This document references:
ITU-T G.872 - Architecture of the optical transport network Amendment 1
Published by ITU-T on January 1, 2021
This Recommendation describes the functional architecture of the optical transport network (OTN) using the modelling methodology described in [ITU-T G.800], [ITU-T G.805] for the digital layer...
This document references:
ITU-T G.841 - Types and Characteristics of SDH Network Protection Architectures - Series G: Transmission Systems and Media, Digital Systems and Networks Digital Transmission Systems - Digital Networks - SDH Network Characteristics
Published by ITU-T on October 1, 1998
A description is not available for this item.
This document references:
ITU-T G.808.1 - Generic protection switching – Linear trail and subnetwork protection
Published by ITU-T on May 1, 2014
This Recommendation provides an overview of generic aspects of linear protection switching. It covers protection schemes applicable to circuit-switched and packet-switched layer networks; e.g.,...
This document references:
ITU-T Y.1331 - Interfaces for the optical transport network
Published by ITU-T on June 1, 2020
The optical transport network (OTN) supports the operation and management aspects of optical networks of various architectures, e.g., point-to-point, ring and mesh architectures. This Recommendation...
This document references:
ITU-T G.808 - Terms and definitions for network protection and restoration Amendment 1
Published by ITU-T on March 1, 2018
A description is not available for this item.
This document references:
ITU-T G.798 - Characteristics of optical transport network hierarchy equipment functional blocks
Published by ITU-T on December 1, 2017
This Recommendation covers the functional requirements of optical transport network functionality within equipment. This Recommendation uses the specification methodology defined in [ITU-T G.806], in...
This document is referenced by:
ITU-T G.873.3 - Optical transport network – Shared mesh protection
Published by ITU-T on September 1, 2017
This Recommendation defines the protection switching operation and associated protocol for shared mesh protection at the optical data unit (ODU) layer. The ODU shared mesh protection (SMP) mechanism...
This document is referenced by:
ITU-T G.807 - Generic functional architecture of the optical media network
Published by ITU-T on February 1, 2020
This Recommendation describes the generic functional architecture of the optical media network from the viewpoint of the propagation of optical signals and the non-associated digital overhead, in the...
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