Page 1366 - 5G Basics - Core Network Aspects

3 Signalling aspects

8.6 Smo

The Smo interface permits the interaction between the management plane and the orchestration entities.
Via this interface, the policy configuration and the software updates of orchestration entities can be
provided.

8.7 Smc

The Smc interface permits the interaction between the management plane and SDN control entities. Via this
interface, the policy configuration and software update of control entities can be provided. In addition, the
network status can also be collected for continuous policy adaptation over this interface.

8.8 Smn

The Smn interface permits the interaction between the management plane and the network entities. Via this
interface, the initial device setup/configuration and software update of network entities can be provided.
The network performance monitoring, fault isolation and energy-efficient operation can also be
implemented over this interface.

9 Signalling protocol procedures

9.1 Procedure for VM live migration
As described in clause 6.3.3, VM live migration across different computing nodes, even a geographically
distributed data centre, requires network policies (such as access control list (ACL), QoS, etc.) attached to the
migrated VM to be aware of the migration action and be re-deployed at the new port of the VM
automatically. In this context, the management plane acts as a cloud computing management platform,
which is responsible for the configuration, control, deployment and management of computing and storage
resources, and interacts with orchestration entities to exchange the VM migration notice. The orchestration
entities take the VM migration role of awareness and trigger the updated network policies on SDN entities.
The detailed information flows are illustrated in Figure 9-1, as follows:

Applications Management Orchestration SDN ontrolc Network
entities plane entities entities entities
1.1. A sk for VM creations
2.1. C reate VM on the
specific computing node
1.2. A sk for the corresponding network policies of this VM
2.2. R eport the notice of
VM creation
3.1. B ind the VM and its
network policies
3.2. R egister and monitor
VM MAC
4. D etect the specific VM
in the network
5. D istribute the corresponding
network policies 6 nstall the network. I
7. A sk for the VM migration policies at specific port
8. M igrate the 9. D etect the migration of
specified VM the specific VM in the network
10. D istribute the corresponding
network policies 11. Re-install the network
policies at new port
Q Suppl.67(15)_F9-1

Figure 9-1 – VM live migration procedures

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