The principle and related architecture of telecom cloud
1. What is Telecom Cloud
NFV -- Network Functions Virtualization
By borrowing IT virtualization technology, many types of networks and device types can be incorporated into industry standards, such as servers\switches\storage
Services will be deployed in data centers, network nodes or users' homes. Network functions are implemented in software and can run on a range of industry standard server hardware. It can be migrated, instantiated, and deployed in different locations in the network as needed without installing new equipment.
2. Architecture of Huawei Telecom Cloud NFV
- Architecture of non-container network elements
The underlying hardware resources implement virtual network functions through the virtual network elements of the virtualization layer, and then are managed by VIM, VNFM, and NFVO.
- Architecture of Container NEs
The difference from the non-container network element architecture is that a PaaS layer is added between the virtual network element and the cloud operating system to manage the container, which can make the architecture more lightweight.
3. Functions of Telecom Cloud
1. Open Architecture and Compatibility
Support for devices from multiple manufacturers: Huawei's underlying servers currently support devices from more than 200 manufacturers. In addition, both the upper virtualization software layer and the upper cloud operating system can support multi-vendor compatibility.
Support for heterogeneous interconnection: MANO domains composed of devices from different manufacturers can achieve heterogeneous interconnection.
2. Advantages of virtualized architecture and cloud architecture
Traditionally, business logic is bound to business data, but software has been decoupled from hardware after virtualization. After cloudification, business data, business logic, and session forwarding are all separated, and horizontal expansion and memory distributed databases are supported.
3. Elastic expansion and elastic shrinkage
It can be elastically expanded during business peaks and elastically reduced during low periods, and resources can be used flexibly.
4. Reliability mechanism
The telecom cloud has a reliability redundancy mechanism, which can ensure that the application layer 0 session is interrupted. The method is to adopt a redundancy mechanism. Once a virtual machine hangs up, a new virtual machine will be established immediately to take over the business.
5. New ways, new throttling, new growth
The trend of NFV network architecture is to adopt automated operation and maintenance, adopt standardized hardware, and support third-party development.
2. Deployment of automated operation and maintenance of network elements
Device deployment process under NFV technology
- NFVO receives service requirements and decomposes them into virtual network element requirements.
- NFVO notifies VIM to provide virtual physical resources.
- NFVO notifies VNFM to deploy virtual network elements
- VIM creates a virtual VM
- VIM notifies VNFM that VM creation is successful
- VNFM deploys VNFs
- The VNF goes online on the EMS, and the initial configuration is performed by the EMS
- Business system release business
