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          },
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            "source-tp":"DEG2-CTP-TXRX"
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          "source":{
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              "engineered-spanloss":12.2,
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          "org-openroadm-network-topology:link-type":"ROADM-TO-ROADM",
          "destination":{
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            "dest-tp":"DEG2-TTP-TXRX"
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        {
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        {
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          "source":{
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        {
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            "source-tp":"XPDR1-NETWORK1"
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        {
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        {
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        {
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          "org-openroadm-network-topology:link-type":"EXPRESS-LINK",
          "destination":{
            "dest-node":"ROADMB-DEG1",
            "dest-tp":"DEG1-CTP-TXRX"
          },
          "org-openroadm-common-network:opposite-link":"ROADMB-DEG1-DEG1-CTP-TXRXtoROADMB-DEG2-DEG2-CTP-TXRX"
        },
        {
          "link-id":"ROADMA01-DEG2-DEG2-TTP-TXRXtoROADMB-DEG1-DEG1-TTP-TXRX",
          "source":{
            "source-node":"ROADMA01-DEG2",
            "source-tp":"DEG2-TTP-TXRX"
          },
          "org-openroadm-network-topology:OMS-attributes":{
            "opposite-link":"ROADMB-DEG1-DEG1-TTP-TXRXtoROADMA01-DEG2-DEG2-TTP-TXRX",
            "span":{
              "spanloss-base":11.4,
              "link-concatenation":[
                {
                  "SRLG-Id":0,
                  "SRLG-length":100000,
                  "pmd":0.5,
                  "fiber-type":"smf"
                }
              ],
              "spanloss-current":12,
              "engineered-spanloss":12.2,
              "clfi":"fiber5",
              "auto-spanloss":"true"
            }
          },
          "org-openroadm-network-topology:link-type":"ROADM-TO-ROADM",
          "destination":{
            "dest-node":"ROADMB-DEG1",
            "dest-tp":"DEG1-TTP-TXRX"
          },
          "org-openroadm-common-network:opposite-link":"ROADMB-DEG1-DEG1-TTP-TXRXtoROADMA01-DEG2-DEG2-TTP-TXRX"
        },
        {
          "link-id":"ROADMC01-SRG1-SRG1-CP-TXRXtoROADMC01-DEG2-DEG2-CTP-TXRX",
          "source":{
            "source-node":"ROADMC01-SRG1",
            "source-tp":"SRG1-CP-TXRX"
          },
          "org-openroadm-network-topology:link-type":"ADD-LINK",
          "destination":{
            "dest-node":"ROADMC01-DEG2",
            "dest-tp":"DEG2-CTP-TXRX"
          },
          "org-openroadm-common-network:opposite-link":"ROADMC01-DEG2-DEG2-CTP-TXRXtoROADMC01-SRG1-SRG1-CP-TXRX"
        },
        {
          "link-id":"ROADMC01-DEG2-DEG2-TTP-TXRXtoROADMA01-DEG1-DEG1-TTP-TXRX",
          "source":{
            "source-node":"ROADMC01-DEG2",
            "source-tp":"DEG2-TTP-TXRX"
          },
          "org-openroadm-network-topology:OMS-attributes":{
            "opposite-link":"ROADMA01-DEG1-DEG1-TTP-TXRXtoROADMC01-DEG2-DEG2-TTP-TXRX",
            "span":{
              "spanloss-base":11.4,
              "link-concatenation":[
                {
                  "SRLG-Id":0,
                  "SRLG-length":100000,
                  "pmd":0.5,
                  "fiber-type":"smf"
                }
              ],
              "spanloss-current":12,
              "engineered-spanloss":12.2,
              "clfi":"fiber6",
              "auto-spanloss":"true"
            }
          },
          "org-openroadm-network-topology:link-type":"ROADM-TO-ROADM",
          "destination":{
            "dest-node":"ROADMA01-DEG1",
            "dest-tp":"DEG1-TTP-TXRX"
          },
          "org-openroadm-common-network:opposite-link":"ROADMA01-DEG1-DEG1-TTP-TXRXtoROADMC01-DEG2-DEG2-TTP-TXRX"
        },
        {
          "link-id":"ROADMC01-SRG1-SRG1-CP-TXRXtoROADMC01-DEG1-DEG1-CTP-TXRX",
          "source":{
            "source-node":"ROADMC01-SRG1",
            "source-tp":"SRG1-CP-TXRX"
          },
          "org-openroadm-network-topology:link-type":"ADD-LINK",
          "destination":{
            "dest-node":"ROADMC01-DEG1",
            "dest-tp":"DEG1-CTP-TXRX"
          },
          "org-openroadm-common-network:opposite-link":"ROADMC01-DEG1-DEG1-CTP-TXRXtoROADMC01-SRG1-SRG1-CP-TXRX"
        },
        {
          "link-id":"ROADMB-SRG1-SRG1-CP-TXRXtoROADMB-DEG1-DEG1-CTP-TXRX",
          "source":{
            "source-node":"ROADMB-SRG1",
            "source-tp":"SRG1-CP-TXRX"
          },
          "org-openroadm-network-topology:link-type":"ADD-LINK",
          "destination":{
            "dest-node":"ROADMB-DEG1",
            "dest-tp":"DEG1-CTP-TXRX"
          },
          "org-openroadm-common-network:opposite-link":"ROADMB-DEG1-DEG1-CTP-TXRXtoROADMB-SRG1-SRG1-CP-TXRX"
        },
        {
          "link-id":"ROADMB-SRG1-SRG1-CP-TXRXtoROADMB-DEG2-DEG2-CTP-TXRX",
          "source":{
            "source-node":"ROADMB-SRG1",
            "source-tp":"SRG1-CP-TXRX"
          },
          "org-openroadm-network-topology:link-type":"ADD-LINK",
          "destination":{
            "dest-node":"ROADMB-DEG2",
            "dest-tp":"DEG2-CTP-TXRX"
          },
          "org-openroadm-common-network:opposite-link":"ROADMB-DEG2-DEG2-CTP-TXRXtoROADMB-SRG1-SRG1-CP-TXRX"
        },
        {
          "link-id":"ROADMB-SRG1-SRG1-PP1-TXRXtoXPDRB-XPDR1-XPDR1-NETWORK1",
          "source":{
            "source-node":"ROADMB-SRG1",
            "source-tp":"SRG1-PP1-TXRX"
          },
          "org-openroadm-network-topology:opposite-link":"XPDRB-XPDR1-XPDR1-NETWORK1toROADMB-SRG1-SRG1-PP1-TXRX",
          "org-openroadm-network-topology:link-type":"XPONDER-INPUT",
          "destination":{
            "dest-node":"XPDRB-XPDR1",
            "dest-tp":"XPDR1-NETWORK1"
          },
          "org-openroadm-common-network:opposite-link":"XPDRB-XPDR1-XPDR1-NETWORK1toROADMB-SRG1-SRG1-PP1-TXRX"
        }
      ]
    }
  ]
}