Optical ForwardingConstructs in TAPI Model OSC MC OTSi

Optical Forwarding-Constructs in TAPI Model OSC MC OTSi OSC AI OTS MC OTS-O CI OTS-O AI OMS-O AI CI OTS-O ME Abbreviations OMS-O ME OMS MC OTSi NMC SMC OTSi. G-O ME NMC OTSi OTU ME ODU ME OTSi. A / OCH CC OTU LC* ODU CC OTSi. G-O ME OTU ME NMC OTSi SMCG CC ODU ME OTSi. A CC OTU LC* ODU CC NMC OTSi SMC OTSi. G-O ME NMC OTSi SMCG CC ODU ME ODU – Optical Data Unit OTU – Optical Transport Unit OTSi – Optical Tributary Signal OTSi. A – OTSi Assembly OTSi. G – OTSi Group OMS – Optical Multiplex Section OTS – Optical Transmission Section OSC – Optical Supervisory Channel OTSi. A CC OTU LC* ODU CC NMC TAPI Photonic Media Layer FCs OTU ME CC – Connection LC – Link Connection MC – Media Channel NMC – Network Media Channel SMC – Service Media Channel SMCG – SMC Group SMCA – SMC Assembly ME – Maintenance Entity OTSi TAPI OTSi. A/OCH/ODU FCs * Not explicitly represented in TAPI

Optical Forwarding-Constructs in TAPI Model OSC MC OTSi OSC AI OTS MC OTS-O CI OTS-O AI OMS-O CI OMS-O AI OTS-O ME SMG-O CI SMG-O AI OMS-O ME Abbreviations SMCG-O ME OMS MC SMC OTSi. G-O ME NMC OTSi OTU ME ODU ME OTSi. A / OCH CC OTU LC* ODU CC OTSi. G-O ME OTU ME NMC OTSi SMCG CC ODU ME OTSi. A CC OTU LC* ODU CC NMC OTSi SMC OTSi. G-O ME NMC OTSi SMCG CC ODU ME ODU – Optical Data Unit OTU – Optical Transport Unit OTSi – Optical Tributary Signal OTSi. A – OTSi Assembly OTSi. G – OTSi Group OMS – Optical Multiplex Section OTS – Optical Transmission Section OSC – Optical Supervisory Channel OTSi. A CC OTU LC* ODU CC NMC TAPI Photonic Media Layer FCs OTU ME CC – Connection LC – Link Connection MC – Media Channel NMC – Network Media Channel SMC – Service Media Channel SMCG – SMC Group SMCA – SMC Assembly ME – Maintenance Entity OTSi TAPI OTSi. A/OCH/ODU FCs * Not explicitly represented in TAPI

Notes • Does OSC FCs need to be explicitly modeled? Maybe for OSC power monitoring ? • Not required by the ITU spec but most people implement it as a span loss measurement. LOS is done at the Ethernet layer • Fault correlation (which OTS/OMS/OTSi. A MEPs are affected by failure of OSC) ? • FDI-O is related to a failure of the OSC • FDI-P is related to a failure of the Optical Data Plane • Is explicit correlation of OSC to OTS/OMS/OTSi. A MEs needed? • Yes, Even for OCC when using OCN • Does SMCG represent a routing constraint for OTSi. G! In other words, all the OTSi of an OTSi. G must be routed in same SMCG. • It is not a requirement since someone could create wider channel, but this will require to layer the OTSIG-O on top of SMCG-O to do the correlation between the connection id associated to the SMCG and the associated OTSi. G

Optical Forwarding-Constructs in TAPI Model w/o OSC Abbreviations Frequency should match between OTSi signal spectrum requirement and expected NMC spectrum otherwise performance could be degraded OMS-O ME SMCG-O ME OTSi. G-O ME NMC SMC OTSi SMCG CC OTSi. A / OCH CC OTSi. G-O ME NMC OTU ME ODU ME OTU LC* ODU CC OTU ME OTSi ODU ME OTSi. A CC OTU LC* ODU CC SMC NMC OTSi. G-O ME NMC OTSi SMCG CC OTU ME ODU ME CC – Connection LC – Link Connection MC – Media Channel NMC – Network Media Channel SMC – Service Media Channel SMCG – SMC Group SMCA – SMC Assembly ME – Maintenance Entity ODU – Optical Data Unit OTU – Optical Transport Unit OTSi – Optical Tributary Signal OTSi. A – OTSi Assembly OTSi. G – OTSi Group OMS – Optical Multiplex Section OTS – Optical Transmission Section OSC – Optical Supervisory Channel OTSi. A CC OTU LC* ODU CC NMC OTSi OMS MC OTS MC TAPI Photonic Media Layer FCs TAPI OTSi. A/OCH/ODU FCs * Not explicitly represented in TAPI

Optical Forwarding-Constructs in TAPI Model w/o OSC Node OMS-O ME OTSi. G-O ME OTSi. A / OCH CC OTSi NMC OTSi. A / OCH CC SMC OTSi. G-O ME OTSi NMC OTSi. A CC SMC OTSi SMCG CC OTSi. A CC NMC OTSi. G-O ME OTSi NMC SMC OTSi. A CC SMCG CC OTSi. A CC NMC OTSi OMS MC TAPI OTSi. A/OCH/ODU FCs TAPI Photonic Media Layer FCs

Optical Forwarding-Constructs in TAPI Model with OAM Channel Need to add overhead OTSi. G-O on this slide OMS-O ME OTSi. G-O ME OTSi. A / OCH CC OTSi NMC OTSi. A / OCH CC SMC OTSi. G-O ME OTSi NMC OTSi. A CC SMC OTSi SMCG CC OTSi. A CC NMC OTSi. G-O ME OTSi NMC SMC OTSi. A CC SMCG CC OTSi. A CC NMC OTSi OMS MC TAPI OTSi. A/OCH/ODU FCs TAPI Photonic Media Layer FCs

Optical Forwarding-Constructs in TAPI Model with OAM Channel Need to add SMCG-O overhead on this slide and adaptation OMS-O ME OTSi. G-O ME OTSi. A / OCH CC OTSi NMC OTSi. A / OCH CC SMC OTSi. G-O ME OTSi NMC OTSi. A CC SMC OTSi SMCG CC OTSi. A CC NMC OTSi. G-O ME OTSi NMC SMC OTSi. A CC SMCG CC OTSi. A CC NMC OTSi OMS MC TAPI OTSi. A/OCH/ODU FCs TAPI Photonic Media Layer FCs

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Optical Forwarding-Constructs in TAPI Model OSC MC OTS MC OSC LC* OTS-O ME Does OSC FCs need to be explicitly modeled? Maybe for • OSC power monitoring ? • Fault correlation (which OTS/OMS/OTSi. A MEPs are affected by failure of OSC) ? Is explicit correlation of OSC to OTS/OMS/OTSi. A MEs needed? OMS-O ME OMS MC SMC OTSi. G-O ME OTSi NMC OTSi. A / OCH CC OTU ME ODU ME OTU LC* ODU CC OTSi. G-O ME OTU ME OTSi NMC SMCG CC ODU ME OTSi. A CC OTU LC* ODU CC OTSi NMC SMC OTSi. G-O ME OTU ME OTSi NMC SMCG CC ODU ME OTSi. A CC OTU LC* ODU CC OTSi NMC TAPI Photonic Media Layer FCs TAPI OTSi. A/OCH/ODU FCs Abbreviations CC – Connection LC – Link Connection MC – Media Channel NMC – Network Media Channel SMC – Service Media Channel SMCG – SMC Group ME – Maintenance Entity ODU – Optical Data Unit OTU – Optical Transport Unit OTSi – Optical Tributary Signal OTSi. A – OTSi Assembly OTSi. G – OTSi Group OMS – Optical Multiplex Section OTS – Optical Transmission Section OSC – Optical Supervisory Channel Does SMCG represent a routing constraint for OTSi. G! In other words, all the OTSi of an OTSi. G must be routed in same SMCG. * Not explicitly represented in TAPI

Optical Forwarding-Constructs in TAPI Model w/o OSC Abbreviations This representation (traditional) ignores OSC association-transportation of OTSi. G -O/ OMS-O/ OTS-O. OMS-O ME OTSi. G-O ME OTSi NMC SMCG CC OTSi. A / OCH CC OTSi. G-O ME OTU ME ODU ME OTU LC* ODU CC OTU ME ODU ME OTSi NMC OTSi. A CC OTU LC* ODU CC SMC OTSi NMC OTSi. G-O ME OTU ME ODU ME OTSi NMC SMCG CC OTSi. A CC OTU LC* ODU CC OTSi NMC CC – Connection LC – Link Connection MC – Media Channel NMC – Network Media Channel SMC – Service Media Channel SMCG – SMC Group ME – Maintenance Entity ODU – Optical Data Unit OTU – Optical Transport Unit OTSi – Optical Tributary Signal OTSi. A – OTSi Assembly OTSi. G – OTSi Group OMS – Optical Multiplex Section OTS – Optical Transmission Section OSC – Optical Supervisory Channel Does SMCG represent a routing constraint for OTSi. G! In other words, all the OTSi of an OTSi. G must be routed in same SMCG. OMS MC OTS MC TAPI Photonic Media Layer FCs TAPI OTSi. A/OCH/ODU FCs * Not explicitly represented in TAPI