A YANG Data Model for Optical Impairment-aware Topology
draft-ietf-ccamp-optical-impairment-topology-yang-07
The information below is for an old version of the document.
Document | Type |
This is an older version of an Internet-Draft whose latest revision state is "Active".
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Authors | Young Lee , Esther Le Rouzic , Victor Lopez , Gabriele Galimberti , Dieter Beller | ||
Last updated | 2021-07-08 | ||
Replaces | draft-lee-ccamp-optical-impairment-topology-yang | ||
RFC stream | Internet Engineering Task Force (IETF) | ||
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YANGDOCTORS Last Call review
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by Michal Vaško
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Additional resources | Mailing list discussion | ||
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draft-ietf-ccamp-optical-impairment-topology-yang-07
Lee, et al. Expires January 9, 2022 [Page 35] Internet-Draft Opt. Impairment-Aware Topo YANG Model July 2021 grouping optical-channel-data { description "optical impairment data per channel/wavelength"; leaf bit-rate { type decimal64 { fraction-digits 8; range "0..max"; } units "Gbit/s"; config false; description "Gross bit rate"; } leaf BER { type decimal64 { fraction-digits 18; range "0..max"; } config false; description "BER (Bit Error Rate)"; } leaf ch-input-power { type decimal64 { fraction-digits 2; } units "dBm"; config false; description "Per channel average input power level estimated at the receiver of the link"; } leaf ch-pmd { type decimal64 { fraction-digits 8; range "0..max"; } units "ps/(km)^0.5"; config false; description "per channel Polarization Mode Dispersion"; } leaf ch-cd { type decimal64 { Lee, et al. Expires January 9, 2022 [Page 36] Internet-Draft Opt. Impairment-Aware Topo YANG Model July 2021 fraction-digits 5; } units "ps/nm/km"; config false; description "per channel Cromatic Dispersion"; } leaf ch-osnr { type l0-types-ext:snr; config false; description "per channel Optical Signal-to-Noise Ratio (OSNR) estimated at the receiver"; } leaf q-factor { type decimal64 { fraction-digits 5; } units "dB"; config false; description "q-factor estimated at the receiver"; } } /* * Groupings */ grouping amplifier-params { description "describes parameters for an amplifier"; container amplifier { description "amplifier type, operatonal parameters are described."; leaf type-variety { type string ; mandatory true ; description "String identifier of amplifier type referencing a specification in a separate equipment catalog"; } container operational { description "amplifier operational parameters"; list amplifier-element { description "The list of parallel amplifier elements within an Lee, et al. Expires January 9, 2022 [Page 37] Internet-Draft Opt. Impairment-Aware Topo YANG Model July 2021 amplifier used to amplify different frequency ranges."; leaf name { type string; description "The name of the amplifier element as specified in the vendor's specification associated with the type-variety."; } container frequency-range { description "The frequency range amplified by the amplifier element."; uses l0-types-ext:frequency-range; } leaf actual-gain { type decimal64 { fraction-digits 2; } units dB ; mandatory true ; description ".."; } leaf tilt-target { type decimal64 { fraction-digits 2; } mandatory true ; description ".."; } leaf out-voa { type decimal64 { fraction-digits 2; } units dB; mandatory true; description ".."; } leaf in-voa { type decimal64 { fraction-digits 2; } units dB; mandatory true; description ".."; } uses power-param; } // list amplifier-element } // container operational Lee, et al. Expires January 9, 2022 [Page 38] Internet-Draft Opt. Impairment-Aware Topo YANG Model July 2021 } // container amplifier } // grouping amplifier-params grouping fiber-params { description "String identifier of fiber type referencing a specification in a separate equipment catalog"; container fiber { description "fiber characteristics"; leaf type-variety { type string ; mandatory true ; description "fiber type"; } leaf length { type decimal64 { fraction-digits 2; } units km; mandatory true ; description "length of fiber"; } leaf loss-coef { type decimal64 { fraction-digits 2; } units dB/km; mandatory true ; description "loss coefficient of the fiber"; } leaf total-loss { type decimal64 { fraction-digits 2; } units dB; mandatory true ; description "includes all losses: fiber loss and conn-in and conn-out losses"; } leaf pmd{ type decimal64 { fraction-digits 2; } units sqrt(ps); description "pmd of the fiber"; } leaf conn-in{ Lee, et al. Expires January 9, 2022 [Page 39] Internet-Draft Opt. Impairment-Aware Topo YANG Model July 2021 type decimal64 { fraction-digits 2; } units dB; description "connector-in"; } leaf conn-out{ type decimal64 { fraction-digits 2; } units dB; description "connector-out"; } } } grouping roadm-express-path { description "The optical impairments of a ROADM express path."; leaf roadm-pmd { type decimal64 { fraction-digits 8; range "0..max"; } units "ps/(km)^0.5"; description "Polarization Mode Dispersion"; } leaf roadm-cd { type decimal64 { fraction-digits 5; } units "ps/nm"; description "Chromatic Dispersion"; } leaf roadm-pdl { type decimal64 { fraction-digits 2; } units dB ; description "Polarization dependent loss"; } leaf roadm-inband-crosstalk { type decimal64 { fraction-digits 2; } units dB; description Lee, et al. Expires January 9, 2022 [Page 40] Internet-Draft Opt. Impairment-Aware Topo YANG Model July 2021 "In-band crosstalk, or coherent crosstalk, can occur in components that can have multiple same wavelength inputs with the inputs either routed to different output ports, or all but 1 blocked"; } leaf roadm-maxloss { type decimal64 { fraction-digits 2; } units dB; description "This is the maximum expected add path loss from the ROADM ingress to the ROADM egress assuming no additional add path loss is added"; } } grouping roadm-add-path { description "The optical impairments of a ROADM add path."; leaf roadm-pmd { type decimal64 { fraction-digits 8; range "0..max"; } units "ps"; description "Polarization Mode Dispersion"; } leaf roadm-cd { type decimal64 { fraction-digits 5; } units "ps/nm"; description "Cromatic Dispersion"; } leaf roadm-pdl { type decimal64 { fraction-digits 2; } units dB ; description "Polarization dependent loss"; } leaf roadm-inband-crosstalk { type decimal64 { fraction-digits 2; } units dB ; description Lee, et al. Expires January 9, 2022 [Page 41] Internet-Draft Opt. Impairment-Aware Topo YANG Model July 2021 "In-band crosstalk, or coherent crosstalk, can occur in components that can have multiple same wavelength inputs,with the inputs either routed to different output ports, or all but 1 blocked. In the case of add path it is the total of the add block + egress WSS crosstalk contributions."; } leaf roadm-maxloss { type decimal64 { fraction-digits 2; } units dB ; description "This is the maximum expected add path loss from the add/drop port input to the ROADM egress, assuming no additional add path loss is added. This is used to establish the minimum required transponder output power required to hit the ROADM egress target power levels and preventing to hit the WSS attenuation limits. If the add path contains an internal amplifier this loss value should be based on worst case expected amplifier gain due to ripple or gain uncertainty"; } leaf roadm-pmax { type decimal64 { fraction-digits 2; } units dBm ; description "This is the maximum (per carrier) power level permitted at the add block input ports, that can be handled by the ROADM node. This may reflect either add amplifier power contraints or WSS adjustment limits. Higher power transponders would need to have their launch power reduced to this value or lower"; } leaf roadm-osnr { type l0-types-ext:snr; description "Optical Signal-to-Noise Ratio (OSNR). If the add path contains the ability to adjust the Lee, et al. Expires January 9, 2022 [Page 42] Internet-Draft Opt. Impairment-Aware Topo YANG Model July 2021 carrier power levels into an add path amplifier (if present) to a target value, this reflects the OSNR contribution of the add amplifier assuming this target value is obtained. The worst case OSNR based on the input power and NF calculation method, and this value, should be used (if both are defined)."; } leaf roadm-noise-figure { type decimal64 { fraction-digits 5; } units "dB"; description "Noise Figure. If the add path contains an amplifier, this is the noise figure of that amplifier inferred to the add port. This permits add path OSNR calculation based on the input power levels to the add block without knowing the ROADM path losses to the add amplifier."; } } grouping roadm-drop-path { description "roadm drop block path optical impairments"; leaf roadm-pmd { type decimal64 { fraction-digits 8; range "0..max"; } units "ps/(km)^0.5"; description "Polarization Mode Dispersion"; } leaf roadm-cd { type decimal64 { fraction-digits 5; } units "ps/nm"; description "Chromatic Dispersion"; } leaf roadm-pdl { type decimal64 { fraction-digits 2; } units dB ; description "Polarization dependent loss"; Lee, et al. Expires January 9, 2022 [Page 43] Internet-Draft Opt. Impairment-Aware Topo YANG Model July 2021 } leaf roadm-inband-crosstalk { type decimal64 { fraction-digits 2; } units dB; description "In-band crosstalk, or coherent crosstalk, can occur in components that can have multiple same wavelength inputs,with the inputs either routed to different output ports,or all but 1 blocked. In the case of drop path it is the total of the ingress to drop e.g. WSS and drop block crosstalk contributions."; } leaf roadm-maxloss { type decimal64 { fraction-digits 2; } units dB ; description "The net loss from the ROADM input,to the output of the drop block. If ROADM ingress to drop path includes an amplifier, the amplifier gain reduces the net loss. This is before any additional drop path attenuation that may be required due to drop amplifier power contraints. The max value correspond to worst case expected loss, including amplifier gain ripple or uncertainty. It is the maximum output power of the drop amplifier."; } leaf roadm-minloss { type decimal64 { fraction-digits 2; } units dB ; description "The net loss from the ROADM input, to the output of the drop block. If this ROADM ingress to drop path includes an amplifier,the amplifier gain reduces the net loss. This is before any additional drop path attenuation that may be required due to drop amplifier power contraints. The min value correspond to best case expected loss, Lee, et al. Expires January 9, 2022 [Page 44] Internet-Draft Opt. Impairment-Aware Topo YANG Model July 2021 including amplifier gain ripple or uncertainty."; } leaf roadm-typloss { type decimal64 { fraction-digits 2; } units dB ; description "The net loss from the ROADM input, to the output of the drop block. If this ROADM ingress to drop path includes an amplifier, the amplifier gain reduces the net loss. This is before any additional drop path attenuation that may be required due to drop amplifier power contraints. The typ value correspond to typical case expected loss."; } leaf roadm-pmin { type decimal64 { fraction-digits 2; } units dBm ; description "If the drop path has additional loss that is added, for example, to hit target power levels into a drop path amplifier, or simply, to reduce the power of a strong carrier (due to ripple,for example), then the use of the ROADM input power levels and the above drop losses is not appropriate. This parameter corresponds to the min per carrier power levels expected at the output of the drop block. A detail example of the comparison using these parameters is detailed in section xxx of the document yyy."; } leaf roadm-pmax { type decimal64 { fraction-digits 2; } units dBm ; description "If the drop path has additional loss that is added, Lee, et al. Expires January 9, 2022 [Page 45] Internet-Draft Opt. Impairment-Aware Topo YANG Model July 2021 for example, to hit target power levels into a drop path amplifier,or simply,to reduce the power of a strong carrier(due to ripple,for example), then the use of the ROADM input power levels and the above drop losses is not appropriate. This parameter corresponds to the best case per carrier power levels expected at the output of the drop block. A detail example of the comparison using these parameters is detailed in section xxx of the document yyy"; } leaf roadm-ptyp { type decimal64 { fraction-digits 2; } units dBm ; description "If the drop path has additional loss that is added, for example, to hit target power levels into a drop path amplifier,or simply,to reduce the power of a strong carrier(due to ripple,for example), then the use of the ROADM input power levels and the above drop losses is not appropriate. This parameter corresponds to the typical case per carrier power levels expected at the output of the drop block."; } leaf roadm-osnr { type l0-types-ext:snr; description "Optical Signal-to-Noise Ratio (OSNR). Expected OSNR contribution of the drop path amplifier(if present) for the case of additional drop path loss (before this amplifier) in order to hit a target power level (per carrier). If both, the OSNR based on the ROADM input power level (Pcarrier = Pref+10Log(carrier-baudrate/ref-baud) + delta-power) and the input inferred NF(NF.drop), and this OSNR value, are defined, the minimum value between these two should be used"; } leaf roadm-noise-figure { type decimal64 { fraction-digits 5; Lee, et al. Expires January 9, 2022 [Page 46] Internet-Draft Opt. Impairment-Aware Topo YANG Model July 2021 } units "dB"; description "Drop path Noise Figure. If the drop path contains an amplifier, this is the noise figure of that amplifier, inferred to the ROADM ingress port. This permits to determine amplifier OSNR contribution without having to specify the ROADM node's losses to that amplifier. This applies for the case of no additional drop path loss, before the amplifier, in order to reduce the power of the carriers to a target value"; } } grouping concentratedloss-params{ description "concentrated loss"; container concentratedloss{ description "concentrated loss"; leaf loss { type decimal64 { fraction-digits 2; } units dB ; mandatory true; description ".."; } } } grouping power-param{ description "optical power or PSD after the ROADM or after the out-voa"; choice power-param { description "select the mode: channel power or power spectral density"; case channel-power { when "/nw:networks/nw:network/nt:link/tet:te /tet:te-link-attributes/OMS-attributes /equalization-mode='carrier-power'"; leaf nominal-carrier-power{ type decimal64 { fraction-digits 2; } Lee, et al. Expires January 9, 2022 [Page 47] Internet-Draft Opt. Impairment-Aware Topo YANG Model July 2021 units dBm ; description " Reference channel power. Same grouping is used for the OMS power after the ROADM (input of the OMS) or after the out-voa of each amplifier. "; } } case power-spectral-density{ when "/nw:networks/nw:network/nt:link/tet:te /tet:te-link-attributes/OMS-attributes /equalization-mode='power-spectral-density'"; leaf nominal-power-spectral-density{ type decimal64 { fraction-digits 16; } units W/Hz ; description " Reference power spectral density after the ROADM or after the out-voa. Typical value : 3.9 E-14, resolution 0.1nW/MHz"; } } } } grouping oms-general-optical-params { description "OMS link optical parameters"; leaf generalized-snr { type l0-types-ext:snr; description "generalized snr"; } leaf equalization-mode{ type identityref { base l0-types-ext:type-power-mode; } mandatory true; description "equalization mode"; } uses power-param; } grouping otsi-group { description "OTSiG definition , representing client digital information stream supported by 1 or more OTSi"; list otsi { key "otsi-carrier-id"; config false; Lee, et al. Expires January 9, 2022 [Page 48] Internet-Draft Opt. Impairment-Aware Topo YANG Model July 2021 description "list of OTSi contained in 1 OTSiG. The list could also be of only 1 element"; leaf otsi-carrier-id { type int16; description "OTSi carrier-id"; } /*any OTSi as signal generated by transceiver and*/ /* attached to a transponder.*/ leaf transponder-ref { type leafref { path "../../../../../transponder/transponder-id"; } description "Reference to the configured transponder"; } leaf transceiver-ref { type leafref { path "deref(../transponder-ref)/../transceiver/" + "transceiver-id"; } description "Reference to the configured transceiver " ; } leaf configured-mode { type leafref { path "deref(../transceiver-ref)/../supported-modes/" + "supported-mode/mode-id"; } description "Reference to the configured mode for transceiver compatibility approach"; } uses l0-types-ext:common-transceiver-configured-param; } // OTSi list } // OTSiG grouping grouping media-channel-groups { description "media channel groups"; list media-channel-group { key "i"; description "list of media channel groups"; leaf i { type int16; Lee, et al. Expires January 9, 2022 [Page 49] Internet-Draft Opt. Impairment-Aware Topo YANG Model July 2021 description "index of media channel group member"; } list media-channels { key "flexi-n"; description "list of media channels represented as (n,m)"; // this grouping add both n.m values uses l0-types:flexi-grid-frequency-slot; leaf otsi-group-ref { type leafref { path "/nw:networks/nw:network/nw:node/tet:te" + "/tet:tunnel-termination-point" + "/otsi-group/otsi-group-id" ; } description "Reference to the otsi-group list to get otsi-group identifier of the OTSiG carried by this media channel that reports the transient stat"; } leaf otsi-ref { type leafref { path "/nw:networks/nw:network/nw:node/tet:te" + "/tet:tunnel-termination-point/" +"otsi-group[otsi-group-id=current()" +"/../otsi-group-ref]/" + "otsi/otsi-carrier-id" ; } description "Reference to the otsi list supporting the related OTSiG to get otsi identifier"; } leaf delta-power{ type decimal64 { fraction-digits 2; } units dB ; description " Deviation from the reference carrier power defined for the OMS."; } } // media channels list } // media-channel-groups list } // media media-channel-groups grouping Lee, et al. Expires January 9, 2022 [Page 50] Internet-Draft Opt. Impairment-Aware Topo YANG Model July 2021 grouping oms-element { description "OMS description"; list OMS-elements { key "elt-index"; description "defines the spans and the amplifier blocks of the amplified lines"; leaf elt-index { type uint16; description "ordered list of Index of OMS element (whether it's a Fiber, an EDFA or a Concentratedloss)"; } leaf oms-element-uid { type string; description "unique id of the element if it exists"; } choice element { mandatory true; description "OMS element type"; case amplifier { uses amplifier-params ; } case fiber { uses fiber-params ; } case concentratedloss { uses concentratedloss-params ; } } } } /* Data nodes */ augment "/nw:networks/nw:network/nw:network-types" + "/tet:te-topology" { description "optical-impairment topology augmented"; container optical-impairment-topology { presence "indicates an impairment-aware topology of optical networks"; description "Container to identify impairment-aware topology type"; } Lee, et al. Expires January 9, 2022 [Page 51] Internet-Draft Opt. Impairment-Aware Topo YANG Model July 2021 } augment "/nw:networks/nw:network/nw:node" { when "../nw:network-types/tet:te-topology" + "/optical-imp-topo:optical-impairment-topology" { description "This augment is only valid for Optical Impairment."; } description "Node augmentation for optical impairments data."; list transponder { key "transponder-id"; config false; description "list of transponder"; leaf transponder-id { type uint32; description "transponder identifier"; } list transceiver { key "transceiver-id"; config false; description "list of transceiver related to a transponder"; leaf transceiver-id { type uint32; description "transceiver identifier"; } leaf termination-type-capabilities { type enumeration { enum tunnel-only { description "The transceiver can only be used in an Optical Tunnel termination configuration."; } enum 3r-only { description "The transceiver can only be used in a 3R configuration."; } enum 3r-or-tunnel { description "The transceiver can be configure to be used either in an Optical Tunnel termination configuration or in a 3R configuration."; } } description "Describes whether the tranceiver can be used in an Lee, et al. Expires January 9, 2022 [Page 52] Internet-Draft Opt. Impairment-Aware Topo YANG Model July 2021 Optical Tunnel termination configuration or in a 3R configuration (or both)."; } leaf supported-3r-mode { when '(../termination-type-capabilities = "3r-only") or (../termination-type-capabilities = "3r-or-tunnel")' { description "Applies only when the tranceiver supports 3R configuration."; } type enumeration { enum unidir { description "Unidirectional 3R configuration."; } enum bidir { description "Bidirectional 3R configuration."; } } description "Describes the supported 3R configuration type."; } leaf configured-termination-type { type enumeration { enum tunnel-termination { description "The transceiver is currently used in an Optical Tunnel termination configuration."; } enum 3r-regeneration { description "The transceiver is currently used in a 3R configuration."; } } description "Describes whether the current configuration of the tranceiver is used in an Optical Tunnel termination configuration or in a 3R configuration. If empty, it means that the transcevier is not used."; } uses l0-types-ext:transceiver-capabilities; } // end of list of transceiver } // end list of transponder } Lee, et al. Expires January 9, 2022 [Page 53] Internet-Draft Opt. Impairment-Aware Topo YANG Model July 2021 augment "/nw:networks/nw:network/nt:link/tet:te" + "/tet:te-link-attributes" { when "/nw:networks/nw:network/nw:network-types" + "/tet:te-topology/" + "optical-imp-topo:optical-impairment-topology" { description "This augment is only valid for Optical Impairment."; } description "Optical Link augmentation for impairment data."; container OMS-attributes { config false; description "OMS attributes"; uses oms-general-optical-params; uses media-channel-groups; uses oms-element; } } augment "/nw:networks/nw:network/nw:node/tet:te" + "/tet:tunnel-termination-point" { when "/nw:networks/nw:network/nw:network-types" + "/tet:te-topology/" + "optical-imp-topo:optical-impairment-topology" { description "This augment is only valid for Impairment with non-sliceable transponder model"; } description "Tunnel termination point augmentation for non-sliceable transponder model."; list otsi-group { key "otsi-group-id"; config false; description "the list of possible OTSiG representing client digital stream"; leaf otsi-group-id { type int16; description "index of otsi-group element"; } uses otsi-group; } // list of OTSiG list transceiver { config false; description "The list of the tranceivers used by the TTP."; leaf transponder-ref { Lee, et al. Expires January 9, 2022 [Page 54] Internet-Draft Opt. Impairment-Aware Topo YANG Model July 2021 type leafref { path "../../../../transponder/transponder-id"; } description "The reference to the transponder hosting the tranceiver of the TTP."; } leaf tranceiver-ref { type leafref { path "deref(../transponder-ref)/../transceiver" + "/transceiver-id"; } description "The reference to the tranceiver of the TTP."; } } // list of tranceivers } // end of augment augment "/nw:networks/nw:network/nw:node/tet:te" + "/tet:tunnel-termination-point" { when "/nw:networks/nw:network/nw:network-types" +"/tet:te-topology/" + "optical-imp-topo:optical-impairment-topology" { description "This augment is only valid for optical impairment with sliceable transponder model"; } description "Tunnel termination point augmentation for sliceable transponder model."; uses sliceable-transponder-attributes; } augment "/nw:networks/nw:network/nw:node/tet:te" + "/tet:te-node-attributes" { when "/nw:networks/nw:network/nw:network-types" + "/tet:te-topology" + "/optical-imp-topo:optical-impairment-topology" { description "This augment is only valid for Optical Impairment topology"; } description "node attributes augmentantion for optical-impairment ROADM node"; list roadm-path-impairments { Lee, et al. Expires January 9, 2022 [Page 55] Internet-Draft Opt. Impairment-Aware Topo YANG Model July 2021 key "roadm-path-impairments-id"; config false; description "The set of optical impairments related to a ROADM path."; leaf roadm-path-impairments-id { type uint32; description "index of the ROADM path-impairment list"; } choice impairment-type { description "type path impairment"; case roadm-express-path { list roadm-express-path { description "The list of optical impairments on a ROADM express path for different frequency ranges. Two elements in the list must not have the same range or overlapping ranges."; container frequency-range { description "The frequency range for which these optical impairments apply."; uses l0-types-ext:frequency-range; } uses roadm-express-path; } } case roadm-add-path { list roadm-add-path { description "The list of optical impairments on a ROADM add path for different frequency ranges. Two elements in the list must not have the same range or overlapping ranges."; container frequency-range { description "The frequency range for which these optical impairments apply."; uses l0-types-ext:frequency-range; } uses roadm-add-path; } } case roadm-drop-path { list roadm-drop-path { description Lee, et al. Expires January 9, 2022 [Page 56] Internet-Draft Opt. Impairment-Aware Topo YANG Model July 2021 "The list of optical impairments on a ROADM add path for different frequency ranges. Two elements in the list must not have the same range or overlapping ranges."; container frequency-range { description "The frequency range for which these optical impairments apply."; uses l0-types-ext:frequency-range; } uses roadm-drop-path; } } } } // list path impairments } // augmentation for optical-impairment ROADM augment "/nw:networks/nw:network/nw:node/tet:te/" + "tet:information-source-entry/tet:connectivity-matrices"{ when "/nw:networks/nw:network/nw:network-types" + "/tet:te-topology/" + "optical-imp-topo:optical-impairment-topology" { description "This augment is only valid for Optical Impairment topology "; } description "Augment default TE node connectivity matrix information source."; leaf roadm-path-impairments { type leafref { path "../../../tet:te-node-attributes/" + "roadm-path-impairments/roadm-path-impairments-id"; } description "pointer to the list set of ROADM optical impairments"; } } // augmentation connectivity-matrices information-source augment "/nw:networks/nw:network/nw:node/tet:te/" + "tet:information-source-entry/tet:connectivity-matrices/" + "tet:connectivity-matrix" { when "/nw:networks/nw:network/nw:network-types" + "/tet:te-topology/" + "optical-imp-topo:optical-impairment-topology" { Lee, et al. Expires January 9, 2022 [Page 57] Internet-Draft Opt. Impairment-Aware Topo YANG Model July 2021 description "This augment is only valid for Optical Impairment topology "; } description "Augment TE node connectivity matrix entry information source."; leaf roadm-path-impairments { type leafref { path "../../../../tet:te-node-attributes/" + "roadm-path-impairments/roadm-path-impairments-id"; } description "pointer to the list set of ROADM optical impairments"; } } // augmentation connectivity-matrix information-source augment "/nw:networks/nw:network/nw:node/tet:te/" + "tet:te-node-attributes/tet:connectivity-matrices" { when "/nw:networks/nw:network/nw:network-types" + "/tet:te-topology/" + "optical-imp-topo:optical-impairment-topology" { description "This augment is only valid for Optical Impairment topology "; } description "Augment default TE node connectivity matrix."; leaf roadm-path-impairments { type leafref { path "../../roadm-path-impairments/" + "roadm-path-impairments-id"; } config false; /*the identifier in the list */ /*"roadm-path-impairments" of ROADM optical impairment*/ /*is read-only as the rest of attributes*/ description "pointer to the list set of ROADM optical impairments"; } } // augmentation connectivity-matrices augment "/nw:networks/nw:network/nw:node/tet:te/" + "tet:te-node-attributes/" + "tet:connectivity-matrices/tet:connectivity-matrix" { when "/nw:networks/nw:network/nw:network-types" Lee, et al. Expires January 9, 2022 [Page 58] Internet-Draft Opt. Impairment-Aware Topo YANG Model July 2021 + "/tet:te-topology/" + "optical-imp-topo:optical-impairment-topology" { description "This augment is only valid for Optical Impairment topology "; } description "Augment TE node connectivity matrix entry."; leaf roadm-path-impairments { type leafref { path "../../../roadm-path-impairments/" + "roadm-path-impairments-id"; } config false; description "pointer to the list set of ROADM optical impairments"; } } // augmentation connectivity-matrix augment "/nw:networks/nw:network/nw:node/tet:te/" + "tet:tunnel-termination-point/" + "tet:local-link-connectivities" { when "/nw:networks/nw:network/nw:network-types" + "/tet:te-topology/" + "optical-imp-topo:optical-impairment-topology" { description "This augment is only valid for Optical Impairment topology "; } description "Augment default TTP LLC."; leaf add-path-impairments { type leafref { path "../../../tet:te-node-attributes/" + "roadm-path-impairments/roadm-path-impairments-id" ; } config false; description "pointer to the list set of ROADM optical impairments"; } leaf drop-path-impairments { type leafref { path "../../../tet:te-node-attributes/" + "roadm-path-impairments/roadm-path-impairments-id" ; } Lee, et al. Expires January 9, 2022 [Page 59] Internet-Draft Opt. Impairment-Aware Topo YANG Model July 2021 config false; description "pointer to the list set of ROADM optical impairments"; } } // augmentation local-link-connectivities augment "/nw:networks/nw:network/nw:node/tet:te/" + "tet:tunnel-termination-point/" + "tet:local-link-connectivities/" + "tet:local-link-connectivity" { when "/nw:networks/nw:network/nw:network-types" + "/tet:te-topology/" + "optical-imp-topo:optical-impairment-topology" { description "This augment is only valid for Optical Impairment topology "; } description "Augment TTP LLC entry."; leaf add-path-impairments { type leafref { path "../../../../tet:te-node-attributes/" + "roadm-path-impairments/roadm-path-impairments-id" ; } config false; description "pointer to the list set of ROADM optical impairments"; } leaf drop-path-impairments { type leafref { path "../../../../tet:te-node-attributes/" + "roadm-path-impairments/roadm-path-impairments-id" ; } config false; description "pointer to the list set of ROADM optical impairments"; } } // augmentation local-link-connectivity } <CODE ENDS> Lee, et al. Expires January 9, 2022 [Page 60] Internet-Draft Opt. Impairment-Aware Topo YANG Model July 2021 5. Security Considerations The configuration, state, and action data defined in this document are designed to be accessed via a management protocol with a secure transport layer, such as NETCONF [RFC6241]. The NETCONF access control model [RFC8341] provides the means to restrict access for particular NETCONF users to a preconfigured subset of all available NETCONF protocol operations and content. A number of configuration data nodes defined in this document are read-only; however, these data nodes may be considered sensitive or vulnerable in some network environments (TBD). 6. IANA Considerations This document registers the following namespace URIs in the IETF XML registry [RFC3688]: -------------------------------------------------------------------- URI: urn:ietf:params:xml:ns:yang:ietf-optical-impairment-topology Registrant Contact: The IESG. XML: N/A, the requested URI is an XML namespace. -------------------------------------------------------------------- This document registers the following YANG modules in the YANG Module Names registry [RFC7950]: -------------------------------------------------------------------- name: ietf-optical-impairment-topology namespace: urn:ietf:params:xml:ns:yang:ietf-optical-impairment- topology prefix: optical-imp-topo reference: RFC XXXX (TDB) -------------------------------------------------------------------- 7. Acknowledgments We thank Daniele Ceccarelli and Oscar G. De Dios for useful discussions and motivation for this work. 8. References 8.1. Normative References [RFC2119] Bradner, S., "Key words for use in RFCs to Indicate Requirement Levels", BCP 14, RFC 2119, DOI 10.17487/RFC2119, March 1997, <https://www.rfc-editor.org/info/rfc2119>. Lee, et al. Expires January 9, 2022 [Page 61] Internet-Draft Opt. Impairment-Aware Topo YANG Model July 2021 [RFC7950] Bjorklund, M., Ed., "The YANG 1.1 Data Modeling Language", RFC 7950, DOI 10.17487/RFC7950, August 2016, <https://www.rfc-editor.org/info/rfc7950>. [RFC8040] Bierman, A., Bjorklund, M., and K. Watsen, "RESTCONF Protocol", RFC 8040, DOI 10.17487/RFC8040, January 2017, <https://www.rfc-editor.org/info/rfc8040>. [RFC8341] Bierman, A. and M. Bjorklund, "Network Configuration Access Control Model", STD 91, RFC 8341, DOI 10.17487/RFC8341, March 2018, <https://www.rfc-editor.org/info/rfc8341>. [RFC8795] Liu, X., Bryskin, I., Beeram, V., Saad, T., Shah, H., and O. Gonzalez de Dios, "YANG Data Model for Traffic Engineering (TE) Topologies", RFC 8795, DOI 10.17487/RFC8795, August 2020, <https://www.rfc-editor.org/info/rfc8795>. 8.2. Informative References [RFC6241] Enns, R., Ed., Bjorklund, M., Ed., Schoenwaelder, J., Ed., and A. Bierman, Ed., "Network Configuration Protocol (NETCONF)", RFC 6241, DOI 10.17487/RFC6241, June 2011, <https://www.rfc-editor.org/info/rfc6241>. [RFC6566] Lee, Y., Ed., Bernstein, G., Ed., Li, D., and G. Martinelli, "A Framework for the Control of Wavelength Switched Optical Networks (WSONs) with Impairments", RFC 6566, DOI 10.17487/RFC6566, March 2012, <https://www.rfc-editor.org/info/rfc6566>. [RFC7446] Lee, Y., Ed., Bernstein, G., Ed., Li, D., and W. Imajuku, "Routing and Wavelength Assignment Information Model for Wavelength Switched Optical Networks", RFC 7446, DOI 10.17487/RFC7446, February 2015, <https://www.rfc-editor.org/info/rfc7446>. [RFC7579] Bernstein, G., Ed., Lee, Y., Ed., Li, D., Imajuku, W., and J. Han, "General Network Element Constraint Encoding for GMPLS-Controlled Networks", RFC 7579, DOI 10.17487/RFC7579, June 2015, <https://www.rfc-editor.org/info/rfc7579>. Lee, et al. Expires January 9, 2022 [Page 62] Internet-Draft Opt. Impairment-Aware Topo YANG Model July 2021 [RFC7581] Bernstein, G., Ed., Lee, Y., Ed., Li, D., Imajuku, W., and J. Han, "Routing and Wavelength Assignment Information Encoding for Wavelength Switched Optical Networks", RFC 7581, DOI 10.17487/RFC7581, June 2015, <https://www.rfc-editor.org/info/rfc7581>. [RFC7698] Gonzalez de Dios, O., Ed., Casellas, R., Ed., Zhang, F., Fu, X., Ceccarelli, D., and I. Hussain, "Framework and Requirements for GMPLS-Based Control of Flexi-Grid Dense Wavelength Division Multiplexing (DWDM) Networks", RFC 7698, DOI 10.17487/RFC7698, November 2015, <https://www.rfc-editor.org/info/rfc7698>. [RFC8340] Bjorklund, M. and L. Berger, Ed., "YANG Tree Diagrams", BCP 215, RFC 8340, DOI 10.17487/RFC8340, March 2018, <https://www.rfc-editor.org/info/rfc8340>. [RFC8342] Bjorklund, M., Schoenwaelder, J., Shafer, P., Watsen, K., and R. Wilton, "Network Management Datastore Architecture (NMDA)", RFC 8342, DOI 10.17487/RFC8342, March 2018, <https://www.rfc-editor.org/info/rfc8342>. [RFC8345] Clemm, A., Medved, J., Varga, R., Bahadur, N., Ananthakrishnan, H., and X. Liu, "A YANG Data Model for Network Topologies", RFC 8345, DOI 10.17487/RFC8345, March 2018, <https://www.rfc-editor.org/info/rfc8345>. [RFC8453] Ceccarelli, D., Ed. and Y. Lee, Ed., "Framework for Abstraction and Control of TE Networks (ACTN)", RFC 8453, DOI 10.17487/RFC8453, August 2018, <https://www.rfc-editor.org/info/rfc8453>. [I-D.ietf-ccamp-wson-yang] Zheng, H., Lee, Y., Guo, A., Lopez, V., and D. King, "A YANG Data Model for WSON (Wavelength Switched Optical Networks)", draft-ietf-ccamp-wson-yang-28 (work in progress), December 2020. [I-D.ietf-ccamp-layer0-types] Zheng, H., Lee, Y., Guo, A., Lopez, V., and D. King, "A YANG Data Model for Layer 0 Types", draft-ietf-ccamp- layer0-types-09 (work in progress), December 2020. [I-D.esdih-ccamp-layer0-types-ext] Beller, D., Belotti, S., Zheng, H., Busi, I., and E. L. Rouzic, "A YANG Data Model for Layer 0 Types - Revision 2", draft-esdih-ccamp-layer0-types-ext-01 (work in progress), July 2021. Lee, et al. Expires January 9, 2022 [Page 63] Internet-Draft Opt. Impairment-Aware Topo YANG Model July 2021 [I-D.ietf-ccamp-dwdm-if-param-yang] Galimberti, G., Kunze, R., Burk, A., Hiremagalur, D., and G. Grammel, "A YANG model to manage the optical interface parameters for an external transponder in a WDM network", draft-ietf-ccamp-dwdm-if-param-yang-05 (work in progress), November 2020. [G.807] "Generic functional architecture of the optical media network", ITU-T Recommendation G.807 - in publication process, February 2020. [G.709] "Interfaces for the Optical Transport Network (OTN)", ITU-T Recommendation G.709, June 2016. [G.694.1] "Spectral grids for WDM applications: DWDM frequency grid", ITU-T Recommendation G.694.1, February 2012. [G.959.1] "Optical transport network physical layer interfaces", ITU-T Recommendation G.959.1, February 2012. [G.872] "Architecture of optical transport networks", ITU-T Recommendation G.872, January 2017. [G.698.2] "Amplified multichannel dense wavelength division multiplexing applications with single channel optical interfaces", ITU-T Recommendation G.698.2, November 2018. [G.798.1] "Types and characteristics of optical transport network equipment", ITU-T Recommendation G.798.1, January 2013. Appendix A. Contributors Aihua Guo Huawei Technologies Email: aguo@futurewei.com Jonas Martensson RISE Email: jonas.martensson@ri.se Lee, et al. Expires January 9, 2022 [Page 64] Internet-Draft Opt. Impairment-Aware Topo YANG Model July 2021 Appendix B. Additional Authors Haomian Zheng Huawei Technologies Email: zhenghaomian@huawei.com Italo Busi Huawei Technologies Email: Italo.Busi@huawei.com Nicola Sambo Scuola Superiore Sant'Anna Email: nicosambo@gmail.com Giovanni Martinelli Cisco Email: giomarti@cisco.com Jean-Luc Auge Orange Email: jeanluc.auge@orange.com Julien Meuric Orange Email: julien.meuric@orange.com Sergio Belotti Nokia Email: Sergio.belotti@nokia.com Griseri Enrico Nokia Email: Enrico.Griseri@nokia.com Lee, et al. Expires January 9, 2022 [Page 65] Internet-Draft Opt. Impairment-Aware Topo YANG Model July 2021 Gert Grammel Juniper Email: ggrammel@juniper.net Authors' Addresses Young Lee Samsung Electronics Email: younglee.tx@gmail.com Esther Le Rouzic Orange Email: esther.lerouzic@orange.com Victor Lopez Nokia Email: Victor.Lopez@nokia.com G. Galimberti Cisco Email: ggalimbe@cisco.com Dieter Beller Nokia Email: Dieter.Beller@nokia.com Lee, et al. Expires January 9, 2022 [Page 66]