This is an L2VPN service model. The service model help provision a service with multiple sites.
Each site would consist of device, interface, neighbour, and MTU configurations.
The service model consists of three main files:
- Yang: This file represent the form data. The minimum input required by engineers to fill out to use the service.
- XML: These set of files represent the device variables that must be applied.
- Python: The python script manipualte the inputs from the yang before applying them to the XML templates.

Requirements:
- NSO version (minimum): 4.1
- Cisco-IOSXR NED version (tested on): 7.1
- Devices: 2 IOSXR

To Compile the service model:
- cd src
- Run: make clean all

To load the service model:
- Navigate to: ncs_cli
- Run: Request packages reload

Sample Test Data:
{
  "/ncs:services/itential-l2vpn:l2vpn": [{
    "id": 12321,
    "bandwidth": "10",
    "pwid": "4000",
    "qos_policy": "Q-5rt-95sd",
    "location": [{
      "location": "Atlanta"
    }, {
      "location": "Dallas"
    }],
    "device": [{
      "location": "Atlanta",
      "device": "iosxr0",
      "description": "testingDescriptionSite1",
      "interface": "11",
      "svlan": "232",
      "neighbor": "2.2.2.2",
      "mtu": "2000"
    }, {
      "location": "Dallas",
      "device": "iosxr1",
      "description": "testingDescriptionSite2",
      "interface": "33",
      "svlan": "45",
      "neighbor": "2.2.2.1",
      "mtu": "2000"
    }]
  }]
}