--------------
  | Network      |
  | Slice        |
  | Orchestrator |
   --------------
    | IETF Network Slice
    | Service Request
    |                    Customer view
....|................................
   -v----------------    Operator view
  |Controller        |
  |  ------------    |
  | | IETF       |   |
  | | Network    |---|---
  | | Slice      |   |   |
  | | Controller |   |   |
  | | (NSC)      |   |   |
  |  ------------    |   |
   ------------------    |
                         | IETF Network Slice
                         | Service Request
                         |
.........................|.....................
               ----------v-------    Carrier view
              |Controller        |
              |  ------------    |
              | | IETF       |   |
              | | Network    |   |
              | | Slice      |   |
              | | Controller |   |
              | | (NSC)      |   |
              |  ------------    |
          ....|  | Network       |............
              |  | Configuration |   Underlay Network
              |  v               |
              |  ------------    |
              | | Network    |   |
              | | Controller |   |
              | | (NC)       |   |
              |  ------------    |
               ------------------
                | Device Configuration
                v