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Photonic model Nigel Davis (Ciena)
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Extract from TR-512.A.4 – the basic model skeleton
OTU OTSi F OTU OTSi Information NMC (~OTSi) OTS FC OMS FC m-way n-way Other OTSs Other OMSs OTS FC OMS FC n-way m-way Other OTSs Other OMSs
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Interpretation in a TAPI context – Step 1 Showing NEP and CEP for OTS
FC CEP Link NEP Interpretation in a TAPI context – Step 1 Showing NEP and CEP for OTS Pin Connector “Port” LTP (PTP) The FC and LTP reference a port. Equipment TCP of termination Signal flow from TP termination Pin Reference from LTP to PhysicalPort b = bidirectional r = rx t = tx c = common .A.4 does not show usual port to LTP “as there is no actual termination” Not relevant in the Core model (as there is no LTP) NOT needed in TAPI as the Connection above is sufficient If we use LTP then this would be one LTP in the Core model Represents the enabled light carrying channel This is an extremely wide channel It represents the enabled spectrum opportunity in a fiber (1” of fiber is transparent to a lot of wavelengths…) n-way Wide Media Channel Media Link Represents the Potential to enable light carrying capability. A fibre is always on Strand Strand Strand Strand Strand r r r t o o o o o o r Strand in cable The Fibre strand is not modelled. The strand terminates on a pin in a connector The core has a model of the cable that goes to a connector. The Media Link represents the effect of a chain of strands The Wide Media Channel represents the effect of a chain of strands Used to deal with internal FCs If no controls of specific statements on subordinate parts then can use Spec Document shows this as a short hand of This (as the FC ports are overlaid)
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Normal ODU stuff from here
FC Interpretation in a TAPI context – Step 2 Adding transponder CEP Link NEP Pin Connector “Port” LTP (PTP) The FC and LTP reference a port. Equipment TCP of termination Signal flow from TP termination Pin Reference from LTP to PhysicalPort b = bidirectional r = rx t = tx c = common OTSiA CEP Assumes an aggregated solution Two alternative physical cases n=1..* OTSiA NEP Should use Connection Port L2 OTSiA Link OTSIa positioning not correct Overhead channel considerations Info Not here OTSi here OTSiMC Shared pin(s) across transponders Dedicated pin(s) per transponder OTSiA All OTSi layer (some FCs are wide or comb) All channels for OTSi Normal ODU stuff from here Not correct More photonic stuff FC/Connection represents OMS span Wide Media Channel n-way n=1 FC/Connection represents OTS span Merge/ Multi Should really be Port D1 Wide Media Channel Merge/ Multi Media Link Represents the Potential to enable light carrying capability. A fibre is always on Strand Strand Strand Strand Strand Strand Strand Strand Strand Strand t o o r t o o r t o o r t o o o o o o r Or even… The Fibre strand is not modelled. The strand terminates on a pin in a connector The core has a model of the cable that goes to a connector. The Media Link represents the effect of a chain of strands The Wide Media Channel represents the effect of a chain of strands Only showing some of the strands Strand in cable OSC OSC injected here (yet more Strands etc) OSC needs to be modelled as it can fail FD rules need to be enhanced Merge/ Multi
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Normal ODU stuff from here
FC Interpretation in a TAPI context – Step 3 Adding in OSC CEP Link NEP Pin Connector “Port” LTP (PTP) Equipment TCP of termination Signal flow from TP termination Pin Reference from LTP to PhysicalPort b = bidirectional r = rx t = tx c = common Assumes an aggregated solution OTSIa positioning not correct Overhead channel considerations Info OTSi OTSiMC OTSiA All OTSi layer (some FCs are wide or comb) All channels for OTSi Normal ODU stuff from here More photonic stuff FC/Connection represents OMS span Wide Media Channel n-way OSC FC/Connection represents OTS span Merge/ Multi Wide Media Channel Media Link Represents the Potential to enable light carrying capability. A fibre is always on Strand Strand Strand Strand Strand Strand Strand Strand t o o r t o Strand o r Strand t o Strand o r t o Strand o r t o o o o o o r The Fibre strand is not modelled. The strand terminates on a pin in a connector The core has a model of the cable that goes to a connector. The Media Link represents the effect of a chain of strands The Wide Media Channel represents the effect of a chain of strands Only showing some of the strands Strand in cable OSC FD rules need to be enhanced
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Normal ODU stuff from here
FC Interpretation in a TAPI context – Step 4 Adding in OTS Monitor/overhead CEP Link NEP Pin Connector “Port” LTP (PTP) Equipment TCP of termination Signal flow from TP termination Pin Reference from LTP to PhysicalPort b = bidirectional r = rx t = tx c = common Assumes an aggregated solution OTSIa positioning not correct Overhead channel considerations Info OTSi OTSiMC OTSiA All OTSi layer (some FCs are wide or comb) All channels for OTSi Normal ODU stuff from here OMS not shown OTS-O More photonic stuff FC/Connection represents OMS span Wide Media Channel OMS monitor not shown n-way OSC FC/Connection represents OTS span Merge/ Multi Wide Media Channel Media Link Represents the Potential to enable light carrying capability. A fibre is always on t o Strand o r Strand t o Strand o r Strand Strand Strand Strand Strand Strand Strand Strand Strand t o Strand o r t o Strand o r t o o r t o o o o o o r The Fibre strand is not modelled. The strand terminates on a pin in a connector The core has a model of the cable that goes to a connector. The Media Link represents the effect of a chain of strands The Wide Media Channel represents the effect of a chain of strands Only showing some of the strands Strand in cable OSC FD rules need to be enhanced
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Normal ODU stuff from here
FC Interpretation in a TAPI context – Step 5 Abstracting the detail CEP Link NEP Pin Connector “Port” LTP (PTP) Equipment TCP of termination Signal flow from TP termination Pin Reference from LTP to PhysicalPort b = bidirectional r = rx t = tx c = common Assumes an aggregated solution OTSIa positioning not correct Overhead channel considerations Info OTSi OTSiMC OTSiA All OTSi layer (some FCs are wide or comb) All channels for OTSi Normal ODU stuff from here OTS-O OSC More photonic stuff FC/Connection represents OMS span Wide Media Channel n-way FC/Connection represents OTS span Merge/ Multi Wide Media Channel Media Link Represents the Potential to enable light carrying capability. A fibre is always on t o Strand o r Strand t o Strand o r Strand Strand Strand Strand Strand Strand Strand Strand Strand Strand Strand t o o r t o o r t o o r t o o o o o o r The Fibre strand is not modelled. The strand terminates on a pin in a connector The core has a model of the cable that goes to a connector. The Media Link represents the effect of a chain of strands The Wide Media Channel represents the effect of a chain of strands Only showing some of the strands Strand in cable OSC FD rules need to be enhanced
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Normal ODU stuff from here
FC Interpretation in a TAPI context – Step 6 Consolidating in CEP CEP Link NEP Pin Connector “Port” LTP (PTP) Equipment TCP of termination Signal flow from TP termination Pin Reference from LTP to PhysicalPort b = bidirectional r = rx t = tx c = common Assumes an aggregated solution OTSIa positioning not correct Overhead channel considerations Info OTSi OTSiMC OTSiA All OTSi layer (some FCs are wide or comb) All channels for OTSi Normal ODU stuff from here OTS-O OSC More photonic stuff FC/Connection represents OMS span Wide Media Channel n-way FC/Connection represents OTS span Merge/ Multi Wide Media Channel Media Link Represents the Potential to enable light carrying capability. A fibre is always on t o Strand o r Strand t o Strand o r Strand Strand Strand Strand Strand Strand Strand Strand Strand Strand Strand t o o r t o o r t o o r t o o o o o o r The Fibre strand is not modelled. The strand terminates on a pin in a connector The core has a model of the cable that goes to a connector. The Media Link represents the effect of a chain of strands The Wide Media Channel represents the effect of a chain of strands Only showing some of the strands Strand in cable OSC
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Normal ODU stuff from here
FC Interpretation in a TAPI context – Step 7 Adding in OMS/OTSiG Monitor/overhead CEP Link NEP Pin Connector “Port” LTP (PTP) Equipment TCP of termination Signal flow from TP termination Pin Reference from LTP to PhysicalPort b = bidirectional r = rx t = tx c = common Assumes an aggregated solution OTSIa positioning not correct Overhead channel considerations Info OTSi OTSiG-o OTSiMC OMS-O OTSiA All OTSi layer (some FCs are wide or comb) All channels for OTSi Normal ODU stuff from here OTS-O More photonic stuff FC/Connection represents OMS span Wide Media Channel n-way FC/Connection represents OTS span Merge/ Multi Wide Media Channel Media Link Represents the Potential to enable light carrying capability. A fibre is always on t o Strand o r Strand t o Strand o r Strand Strand Strand Strand Strand Strand Strand Strand Strand Strand Strand t o o r t o o r t o o r t o o o o o o r The Fibre strand is not modelled. The strand terminates on a pin in a connector The core has a model of the cable that goes to a connector. The Media Link represents the effect of a chain of strands The Wide Media Channel represents the effect of a chain of strands Only showing some of the strands Strand in cable OSC
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Normal ODU stuff from here
FC Interpretation in a TAPI context – Step 8 Consolidating in NEP (alternative) CEP Link NEP Pin Connector “Port” LTP (PTP) Equipment TCP of termination Signal flow from TP termination Pin Reference from LTP to PhysicalPort b = bidirectional r = rx t = tx c = common Assumes an aggregated solution OTSIa positioning not correct Overhead channel considerations Info OTSi OTSiG-o OTSiMC OMS-O OTSiA All OTSi layer (some FCs are wide or comb) All channels for OTSi Normal ODU stuff from here OTS-O More photonic stuff FC/Connection represents OMS span Wide Media Channel n-way FC/Connection represents OTS span Merge/ Multi Wide Media Channel Media Link Represents the Potential to enable light carrying capability. A fibre is always on t o Strand o r Strand t o Strand o r Strand Strand Strand Strand Strand Strand Strand Strand Strand Strand Strand t o o r t o o r t o o r t o o o o o o r The Fibre strand is not modelled. The strand terminates on a pin in a connector The core has a model of the cable that goes to a connector. The Media Link represents the effect of a chain of strands The Wide Media Channel represents the effect of a chain of strands Only showing some of the strands Strand in cable OSC
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Normal ODU stuff from here
FC Interpretation in a TAPI context – Step 4a With separate Transponders – where is the OTSiA?? CEP Link NEP Pin Connector “Port” LTP (PTP) Equipment TCP of termination Signal flow from TP termination Pin Reference from LTP to PhysicalPort b = bidirectional r = rx t = tx c = common Disaggregated solution Info OTSi OTSiMC See later slide OMS not shown OTSiA All OTSi layer (some FCs are wide or comb) All channels for OTSi Normal ODU stuff from here OTS-O More photonic stuff FC/Connection represents OMS span Wide Media Channel OMS monitor not shown n-way OSC FC/Connection represents OTS span Wide Media Channel Media Link Represents the Potential to enable light carrying capability. A fibre is always on t o Strand o r Strand Strand Strand Strand Strand Strand Strand Strand Strand Strand t o o r Strand t o Strand o r t o Strand o r t o o r t o o o o o o r The Fibre strand is not modelled. The strand terminates on a pin in a connector The core has a model of the cable that goes to a connector. The Media Link represents the effect of a chain of strands The Wide Media Channel represents the effect of a chain of strands Only showing some of the strands Strand in cable NE1 NE2 OSC FD rules need to be enhanced
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Normal ODU stuff from here
FC Interpretation in a TAPI context – Step 4b Showing abstract OTSiA Merge/split CEP Link NEP Pin Connector “Port” LTP (PTP) Equipment TCP of termination Signal flow from TP termination Pin Reference from LTP to PhysicalPort b = bidirectional r = rx t = tx c = common Disaggregated solution Info OTSi OTSiMC See later slide OMS not shown OTSiA All OTSi layer (some FCs are wide or comb) All channels for OTSi Normal ODU stuff from here OTS-O More photonic stuff FC/Connection represents OMS span Wide Media Channel OMS monitor not shown n-way OSC FC/Connection represents OTS span Wide Media Channel n strands n ports n ports Media Link Represents the Potential to enable light carrying capability. A fibre is always on t o Strand o r Strand Strand Strand Strand Strand Strand Strand Strand Strand Strand Strand Strand Strand t o o r t o o r t o o r t o o r t o o o o o o r The Fibre strand is not modelled. The strand terminates on a pin in a connector The core has a model of the cable that goes to a connector. The Media Link represents the effect of a chain of strands The Wide Media Channel represents the effect of a chain of strands Only showing some of the strands Strand in cable OSC FD rules need to be enhanced
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Normal ODU stuff from here
FC Interpretation in a TAPI context – Step 7a Adding in OMS/OTSiG Monitor/overhead CEP Link NEP Pin Connector “Port” LTP (PTP) Equipment TCP of termination Signal flow from TP termination Pin Reference from LTP to PhysicalPort b = bidirectional r = rx t = tx c = common Disaggregated solution Info OTSi OTSiG-o OTSiMC See later slide OMS-O OTSiA All OTSi layer (some FCs are wide or comb) All channels for OTSi Normal ODU stuff from here OTS-O More photonic stuff FC/Connection represents OMS span Wide Media Channel n-way FC/Connection represents OTS span Wide Media Channel Media Link Represents the Potential to enable light carrying capability. A fibre is always on Strand Strand Strand Strand Strand Strand Strand Strand t o Strand o r Strand t o Strand o r Strand t o Strand o r t o Strand o r t o o r t o o o o o o r The Fibre strand is not modelled. The strand terminates on a pin in a connector The core has a model of the cable that goes to a connector. The Media Link represents the effect of a chain of strands The Wide Media Channel represents the effect of a chain of strands Only showing some of the strands Strand in cable OSC
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Normal ODU stuff from here
FC Interpretation in a TAPI context – Step 7b Adding in OMS/OTSiG Monitor/overhead CEP Link NEP Pin Connector “Port” LTP (PTP) Equipment TCP of termination Signal flow from TP termination Pin Reference from LTP to PhysicalPort b = bidirectional r = rx t = tx c = common Disaggregated solution Info OTSi OTSiG-o OTSiMC See later slide OMS-O OTSiA All OTSi layer (some FCs are wide or comb) All channels for OTSi Normal ODU stuff from here OTS-O More photonic stuff FC/Connection represents OMS span Wide Media Channel n-way FC/Connection represents OTS span Wide Media Channel Media Link Represents the Potential to enable light carrying capability. A fibre is always on Strand Strand Strand Strand Strand Strand Strand Strand t o Strand o r Strand t o Strand o r Strand t o Strand o r t o Strand o r t o o r t o o o o o o r The Fibre strand is not modelled. The strand terminates on a pin in a connector The core has a model of the cable that goes to a connector. The Media Link represents the effect of a chain of strands The Wide Media Channel represents the effect of a chain of strands Only showing some of the strands Strand in cable OSC
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Normal ODU stuff from here
FC Interpretation in a TAPI context – Step 7c Using FTP CEP Link NEP Pin Connector “Port” LTP (PTP) Equipment TCP of termination Signal flow from TP termination Pin Reference from LTP to PhysicalPort b = bidirectional r = rx t = tx c = common Disaggregated solution Info OTSi OTSiG-o OTSiMC See later slide OMS-O OTSiA All OTSi layer (some FCs are wide or comb) All channels for OTSi Normal ODU stuff from here OTS-O More photonic stuff FC/Connection represents OMS span Wide Media Channel n-way FC/Connection represents OTS span Wide Media Channel Media Link X Represents the Potential to enable light carrying capability. A fibre is always on t o Strand Strand Strand Strand Strand Strand Strand Strand Strand Strand Strand o r t o o r Strand t o Strand o r t o Strand o r t o o r t o o o o o o r The Fibre strand is not modelled. The strand terminates on a pin in a connector The core has a model of the cable that goes to a connector. The Media Link represents the effect of a chain of strands The Wide Media Channel represents the effect of a chain of strands Only showing some of the strands Strand in cable OSC
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Normal ODU stuff from here
FC Interpretation in a TAPI context – Step 8c Using FTP CEP Link NEP Pin Connector “Port” LTP (PTP) Equipment TCP of termination Signal flow from TP termination Pin Reference from LTP to PhysicalPort b = bidirectional r = rx t = tx c = common Disaggregated solution Info OTSi OTSiG-o OTSiMC See later slide OMS-O OTSiA All OTSi layer (some FCs are wide or comb) All channels for OTSi Normal ODU stuff from here OTS-O More photonic stuff FC/Connection represents OMS span Wide Media Channel n-way FC/Connection represents OTS span Wide Media Channel Media Link X Represents the Potential to enable light carrying capability. A fibre is always on t o Strand Strand Strand Strand Strand Strand Strand Strand Strand Strand Strand o r t o o r Strand t o Strand o r t o Strand o r t o o r t o o o o o o r The Fibre strand is not modelled. The strand terminates on a pin in a connector The core has a model of the cable that goes to a connector. The Media Link represents the effect of a chain of strands The Wide Media Channel represents the effect of a chain of strands Only showing some of the strands Strand in cable OSC
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Normal ODU stuff from here
FC Interpretation in a TAPI context – Step 7d Using aggregate CEP and merge in transponder CEP Link NEP Pin Connector “Port” LTP (PTP) Equipment TCP of termination Signal flow from TP termination Pin Reference from LTP to PhysicalPort b = bidirectional r = rx t = tx c = common Disaggregated solution NE1 NE2 OTSIa positioning not correct Overhead channel considerations Info OTSi OTSiG-o OTSiMC OMS-O OTSiA All OTSi layer (some FCs are wide or comb) All channels for OTSi Normal ODU stuff from here OTS-O More photonic stuff FC/Connection represents OMS span Wide Media Channel n-way FC/Connection represents OTS span Merge/ Multi Wide Media Channel Media Link X X Represents the Potential to enable light carrying capability. A fibre is always on t o Strand o r Strand t o Strand o r Strand Strand Strand Strand Strand Strand Strand Strand Strand Strand t o o r t o Strand o r t o o r t o o o o o o r The Fibre strand is not modelled. The strand terminates on a pin in a connector The core has a model of the cable that goes to a connector. The Media Link represents the effect of a chain of strands The Wide Media Channel represents the effect of a chain of strands Only showing some of the strands Strand in cable OSC To specify to NE2 which pool items to choose, the relationship to the connector pins and the wavelengths will need to be provided. The Orchestrator will need to relate the pins on NE1 to the pins on NE2 using knowledge of the strands.
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Normal ODU stuff from here
FC Interpretation in a TAPI context – Step 8d Using aggregate CEP and merge in transponder CEP Link NEP Pin Connector “Port” LTP (PTP) Equipment TCP of termination Signal flow from TP termination Pin Reference from LTP to PhysicalPort b = bidirectional r = rx t = tx c = common Disaggregated solution NE1 NE2 OTSIa positioning not correct Overhead channel considerations Info OTSi OTSiG-o OTSiMC OMS-O OTSiA All OTSi layer (some FCs are wide or comb) All channels for OTSi Normal ODU stuff from here OTS-O More photonic stuff FC/Connection represents OMS span Wide Media Channel n-way FC/Connection represents OTS span Merge/ Multi Wide Media Channel Media Link X X Represents the Potential to enable light carrying capability. A fibre is always on t o Strand o r Strand t o Strand o r Strand Strand Strand Strand Strand Strand Strand Strand Strand Strand t o o r t o Strand o r t o o r t o o o o o o r The Fibre strand is not modelled. The strand terminates on a pin in a connector The core has a model of the cable that goes to a connector. The Media Link represents the effect of a chain of strands The Wide Media Channel represents the effect of a chain of strands Only showing some of the strands Strand in cable OSC To specify to NE2 which pool items to choose, the relationship to the connector pins and the wavelengths will need to be provided. The Orchestrator will need to relate the pins on NE1 to the pins on NE2 using knowledge of the strands.
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TAPI Operations consideration with some distinct challenges due to closeness to real physical environment Assumption: mode of operation between Controllers is “Align and notify of change” Notification/get race conditions needs to NEEDS defined behaviour. Consider Capture snapshot of relevant item in controller via Get at time x Change occurs at time x+1 Notification launched at time x+2 Notification received at time x+3 (entity not known) Get processed at time x+4 (with stale data compared to notification) Alignment method probably benefits from order of retrievals Consider Align Order: Retrieval in scoped blocks would appear to make most sense ConstraintDomain to identify “NE” build details Not supported by TAPI currently (as not in the Core yet) This is independent of the layer and should apply to all technologies etc. There may be multiple nodes per “NE” Capability via Node (if variable by type of Node) Ideally “NEs“ with nodes which are inflexible would be identified by type and would not need repeated retrieval of the same information In the case of photonics it is likely that the NEs are less well defined due to the potential flexibility of cabling (compared to an electrical backplane) Equipment Not supported by TAPI currently Therefore assume that the EquipmentIds used in the Controller are NOT known by the client of TAPI hence some common physical environment address will be necessary to link the photonics to physical Low rate of change infrastructure NEPs and CEPs that relate to OMS/OTS connections This is a complex scope (not clear how this would be accomplished efficiently in current TAPI) Complex relationship to physical environment via Ports which DO NOT have an ID as they are not intended to be modelled OMS/OTS connections This is a complex scope as there is no layer distinction (the scope is relative to the LTPs that bound the connection (not clear how this would be accomplished efficiently in current TAPI) ConnectivityServices and their supporting connections Ideally the Connectivity Service and it recursive “route” detail would be retrieved, i.e. the flexible bits that were set up to support the ConnectivityService (i.e. the OTSiA and OTSis)
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