Appendix C. Example of a YANG Instance

Appendix C. Example of a YANG Instance

This section contains an example of a YANG instance that conforms to the YANG modules. The validity of this data instance has been checked using yangson <https://yangson.labs.nic.cz/>. Yangson requires a YANG library [RFC8525] to define the complete model against which the data instance must be validated. In Appendix D, we provide the JSON library file named "ietf-service-assurance-library.json", which we used for validation.

Below, we provide the contents of the file "example_configuration_instance.json", which contains the configuration data that models Figure 2 from Section 3.1 of [RFC9417]. The instance can be validated with yangson by using the invocation "yangson -v example_configuration_instance.json ietf-service-assurance-library.json", assuming all the files (YANG and JSON) defined in this document reside in the current folder.

{
  "ietf-service-assurance:subservices": {
    "subservice": [
      {
        "type": "service-instance-type",
        "id": "simple-tunnel/example",
        "service-instance-parameter": {
          "service": "simple-tunnel",
          "instance-name": "example"
        },
        "dependencies": {
          "dependency": [
            {
              "type":
                "ietf-service-assurance-interface:interface-type",
              "id": "interface/peer1/tunnel0",
              "dependency-type": "impacting"
            },
            {
              "type":
                "ietf-service-assurance-interface:interface-type",
              "id": "interface/peer2/tunnel9",
              "dependency-type": "impacting"
            },
            {
              "type":
    "example-service-assurance-ip-connectivity:ip-connectivity-type",
              "id":
                "connectivity/peer1/2001:db8::1/peer2/2001:db8::2",
              "dependency-type": "impacting"
            }
          ]
        }
      },
      {
        "type":
    "example-service-assurance-ip-connectivity:ip-connectivity-type",
        "id": "connectivity/peer1/2001:db8::1/peer2/2001:db8::2",
        "example-service-assurance-ip-connectivity:parameters": {
          "device1": "Peer1",
          "address1": "2001:db8::1",
          "device2": "Peer2",
          "address2": "2001:db8::2"
        },
        "dependencies": {
          "dependency": [
            {
              "type":
                "ietf-service-assurance-interface:interface-type",
              "id": "interface/peer1/physical0",
              "dependency-type": "impacting"
            },
            {
              "type":
                "ietf-service-assurance-interface:interface-type",
              "id": "interface/peer2/physical5",
              "dependency-type": "impacting"
            },
            {
              "type": "example-service-assurance-is-is:is-is-type",
              "id": "is-is/instance1",
              "dependency-type": "impacting"
            }
          ]
        }
      },
      {
        "type": "example-service-assurance-is-is:is-is-type",
        "id": "is-is/instance1",
        "example-service-assurance-is-is:parameters": {
          "instance-name": "instance1"
        }
      },
      {
        "type": "ietf-service-assurance-interface:interface-type",
        "id": "interface/peer1/tunnel0",
        "ietf-service-assurance-interface:parameters": {
          "device": "Peer1",
          "interface": "tunnel0"
        },
        "dependencies": {
          "dependency": [
            {
              "type":
                "ietf-service-assurance-interface:interface-type",
              "id": "interface/peer1/physical0",
              "dependency-type": "impacting"
            }
          ]
        }
      },
      {
        "type": "ietf-service-assurance-interface:interface-type",
        "id": "interface/peer1/physical0",
        "ietf-service-assurance-interface:parameters": {
          "device": "Peer1",
          "interface": "physical0"
        },
        "dependencies": {
          "dependency": [
            {
              "type": "ietf-service-assurance-device:device-type",
              "id": "interface/peer1",
              "dependency-type": "impacting"
            }
          ]
        }
      },
      {
        "type": "ietf-service-assurance-device:device-type",
        "id": "interface/peer1",
        "ietf-service-assurance-device:parameters": {
          "device": "Peer1"
        }
      },
      {
        "type": "ietf-service-assurance-interface:interface-type",
        "id": "interface/peer2/tunnel9",
        "ietf-service-assurance-interface:parameters": {
          "device": "Peer2",
          "interface": "tunnel9"
        },
        "dependencies": {
          "dependency": [
            {
              "type":
                "ietf-service-assurance-interface:interface-type",
              "id": "interface/peer2/physical5",
              "dependency-type": "impacting"
            }
          ]
        }
      },
      {
        "type": "ietf-service-assurance-interface:interface-type",
        "id": "interface/peer2/physical5",
        "ietf-service-assurance-interface:parameters": {
          "device": "Peer2",
          "interface": "physical5"
        },
        "dependencies": {
          "dependency": [
            {
              "type": "ietf-service-assurance-device:device-type",
              "id": "interface/peer2",
              "dependency-type": "impacting"
            }
          ]
        }
      },
      {
        "type": "ietf-service-assurance-device:device-type",
        "id": "interface/peer2",
        "ietf-service-assurance-device:parameters": {
          "device": "Peer2"
        }
      }
    ]
  }
}