10. ANNEX A: Use case for OPNFV BrahmaputraΒΆ

A basic resource reservation use case to be realized for OPNFV B-release may look as follows:

  • Step 0: Shim-layer is monitoring/querying available capacity at NFVI
    • Step 0a: Cloud operator creates a new OpenStack tenant user and updates quota values for this user
    • Step 0b: The tenant user is creating and instantiating a simple VNF (e.g. 1 network, 2 VMs)
    • Step 0c: OpenStack is notifying shim-layer about capacity change for this new tenant user
    • Step 0d: Cloud operator can visualize the changes using the GUI
  • Step 1: Consumer(NFVO) is sending a reservation request for future use to shim-layer
  • Step 2: Shim-layer is checking for available capacity at the given time window
  • Step 3: Shim-layer is responding with reservation identifier
  • Step 4 (optional): Consumer(NFVO) is sending an update reservation request to shim-layer (startTime set to now) -> continue with Steps 2 and 3.
  • Step 5: Consumer(VNFM) is requesting the allocation of virtualised resources using the reservation identifier in Step 3