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ITU Y.1711:2004

ITU Y.1711:2004 Operation & Maintenance Mechanism For Mpls Networks Provides mechanisms for user-plane OAM (Operation and Maintenance) functionality in MPLS networks according to the requirements and principles given in ITU-T Recommendation Y.1710. Provides support to

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Table of Contents

1Scope
2References
2.1NormativeReferences
2.2InformativeReferences
3Definitions
4Symbolsandabbreviations
5Introduction
5.1Overviewoffunctionality
5.2IdentificationofOAMpacketsfromnormaluser-plane
traffic
5.3OAMpayload
5.4HandlingoferroredOAMpackets
5.5Engineeringcost/riskconsiderations
5.6Backwardcompatibilityconsiderations
6OAMMechanisms
6.1FeaturescommontoallOAMpackets
6.2ConnectivityVerification(CV)
6.3FastFailureDetection(FFD)
6.4ForwardDefectIndication(FDI)
6.5BackwardDefectIndication(BDI)
6.6On-demanddiagnosticOAMmechanisms
6.7Defecttypecodepoints
6.8DefectTypeentry/exitcriteriaandconsequent
actions
7Availableandunavailablestateprocessing
7.1Short-Breaks
7.2Available/unavailablestatedefinition
7.3Near-endandfar-endmeasurementsofavailability
7.4Near-Endstateprocessingflow-chart
7.5Far-endstateprocessingflow-chart
7.6Apictorialviewofnear-endandfar-endstate
processingforashort-breakandanunavailability
event
8Securityaspects
AppendixI-CVsourceandsinkprocessing
AppendixII-IndexingLSPAvailabilityStateMachine(ASM)
AppendixIII-Differentpossibledefectscenarioswhen
usingFFDOAM
BIBLIOGRAPHY

Abstract

Provides mechanisms for user-plane OAM (Operation and Maintenance) functionality in MPLS networks according to the requirements and principles given in ITU-T Recommendation Y.1710. Provides support to point-to-point and multipoint-to-point explicit routed LSPs (ER-LSPs).

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