{
  "devices": [
    {"id": "leaf-01", "role": "leaf", "pod": "pod-a"},
    {"id": "leaf-02", "role": "leaf", "pod": "pod-a"},
    {"id": "tor-03", "role": "tor", "pod": "pod-a"},
    {"id": "core-01", "role": "core", "pod": "core"}
  ],
  "links": [
    {"a": "leaf-01", "b": "tor-03"},
    {"a": "leaf-02", "b": "tor-03"},
    {"a": "tor-03", "b": "core-01"}
  ]
}