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Guide for Interworking Between HUAWEI CloudFabric Solution and Redhat OpenStack

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Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).
Network Automation Process

Network Automation Process

Figure 1-10 shows the network automation process when a VM is created in the OpenStack cloud network scenario.

  1. The tenant administrator leverages Neutron to create a logical network through the OpenStack GUI.
  2. The tenant administrator leverages Nova to create a VM and places this VM in a specified network through the OpenStack GUI.
  3. Nova invokes the Neutron API to create a virtual port (vPort). The VM previously created is later connected to a vSwitch through this port. This vPort has learned the host ID of the host that the VM is later allocated to, and has also learned MAC, IP and VLAN information of the VM.
  4. Nova sends a VM creation request to the host on the selected computing node. A VM is created and bound to a vSwitch interface by Nova compute.
  5. Neutron detects that the port status of the vSwitch has changed and obtains information about the local VLAN. The information is synchronized between Neutron and the Agile Controller-DCN through the plug-in installed in Neutron by the controller.
  6. The Agile Controller-DCN automatically delivers L2 and L3 configurations:
    1. L2 configuration delivery: The Agile Controller-DCN delivers VM access configurations, such as mappings between VLANs and BDs, to the port that connects a TOR switch and the host where the VM goes online. The connection between the TOR switch and the host is established in initial configurations and detected by the controller through LLDP.
    2. L3 configuration delivery: The Agile Controller-DCN delivers L3 VXLAN gateway configurations, including the vBDIF and gateway IP address, and associates VPN instances with VRF instances.
Figure 1-10 Automatic network configuration
Updated: 2019-03-25

Document ID: EDOC1100072313

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