Page 1367 - 5G Basics - Core Network Aspects

Signalling aspects 3

1. Application entities ask for VM creation and corresponding network policies from the management
plane and orchestration entities, via Sma and Sa interfaces, respectively, according to the tenant's
demands;
2. Management plane, acting as a cloud computing management platform, sends the command to the
specific computing node and reports the VM creation to the orchestration entities via the Smo
interface;
NOTE – The execution of commands received from the management plane on computing nodes, such as VM creation,
VM migration, etc., is out of the scope of this Supplement.
3. Orchestration entities bind the VM and its network policies, note this mapping and register this VM
MAC on SDN control entities and monitor its status changes;
4. SDN control entities detect the specific VM in its controlled network and report to the orchestration
entities;
5. Orchestration entities check the VM and network policies mapping and distribute the bound
network policies of the specific VM to SDN control entities;

6. SDN control entities install the network policies at the corresponding port of the specific VM;
7. Application entities ask for the VM migration;
8. The management plane sends the command to the original and target computing nodes,
respectively;
9. SDN control entities detect the migration of the specific VM in its controlled network and report to
the orchestration entities;
10. Orchestration entities check the VM and network policies mapping and distribute the bound
network policies of the specific VM to SDN control entities;

11. SDN control entities re-install the network policies at the corresponding port of the specific VM and
remove the ones at the original port.

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