Explain the key technology of the Internet of Things era of SDNFV

The world's mainstream operators, equipment vendors, cloud data centers, and Internet companies are all conducting research and deployment of SDN and NFV. Major international organizations are also making efforts to promote relevant standards and technology development. SDNFV will usher in a golden age. This article will explain to you the SDNFV.

1, the definition of SDNFV

SDNFV is an abbreviation of Software Defined Network FuncTIon VirtualizaTIon. It is a combination of Software Defined Network (SDN) and Network FuncTIon VirtualizaTIon (NFV).

SDN was born in the Stanford University Clean Slate project, and the research team led by Professor Nick McKeown of Stanford University put forward the concept of Openflow for the experimental innovation of campus network. Based on Openflow, the program brings open and programmable features. The concept of SDN came into being. . The typical architecture of SDN is divided into three layers, the upper layer is the application layer, including various services and applications; the middle is the control layer, which is mainly responsible for controlling and processing the data plane resources; the bottom layer is the infrastructure layer, which is responsible for the flow table based. Data processing, forwarding, and status collection. SDN essentially has four characteristics: control and forwarding separation, device resource virtualization, hardware generalization, and software open and programmable.

NFV is jointly proposed by a number of large operators to carry software processing of many functions by using general-purpose hardware such as x86 and virtualization technology. Typical applications are CPU-intensive features and do not require high network throughput. The main evaluation functions are: WAN accelerator, signaling session controller, message router, IDS, DPI, firewall, CG-NAT, SGSN/GGSN, PE, BNG, RAN, etc.

SDNFV combines SDN and NFV, with SDN controller as the control plane of the network, NFV as the new generalized infrastructure, ie forwarding plane, Orchestrator for business orchestration, opening up SDN and NFV, making fundamental innovations in network architecture. . SDNFV enables customers to get rid of deep-rooted vendor lock-in, software-based nature, flexible and fast on-demand flexible network, easy to drive growth, increase agility, and become a catalyst for business growth.

2, 5G / the key technology of the Internet of Things era of SDNFV

5G era. To meet the needs of more business applications in the future, 5G must achieve breakthroughs in performance (throughput and latency), reliability, flexibility, scalability, and power efficiency. Some "hard requirements" about 5G have been widely recognized in the industry in advance. In terms of capacity, 5G will achieve 1000 times more mobile data traffic per unit area than 4G; in terms of transmission rate, typical user data rate will increase by 10 to 100 times, peak transmission rate will reach 10Gbps; in terms of delay, end-to-end The delay will be 5 times shorter than 4G, the target is as low as 10ms, even in some special application scenarios as low as 1ms; and in terms of scalability, the number of networkable devices will be 10 to 100 times more than in the 4G era; in addition, low power The battery life of the MMC (machine type equipment) is also increased by 10 times.

The Internet of Things era. By 2020, there will be 50 billion connected devices worldwide, and at the same time, the possibility of each new device being exposed to hackers is further increased. Another big challenge comes from the amount of data that has migrated to this global Internet of Things. According to IDC, by 2020, the Internet of Things will account for 10% of all data on the planet. Then there are a variety of devices that need to be managed and supported, ranging from network switches that support popular management applications and protocols, to traditional legacy SCADA (monitoring and data acquisition) devices, and those that lack computing or memory. To support standard authentication or encryption. Finally, there is a need for very rapid, even real-time responses, especially for applications involving security (such as dangerous industrial processes) or commerce (such as monitoring inventory or customer behavior).

Given the complexity of 5G and the Internet of Things and such a large scale, manual network management is simply not feasible. And SDNFV provides the only viable, cost-effective way to manage 5G and the Internet of Things, and to strengthen the security of the network and the data on it, minimize bandwidth requirements, maximize the application and leverage the performance of data analysis. In the process of our move to 5G/Internet of Things, SDNFV plays a key role. We need to fundamentally refactor the network architecture, reorganize the functions, and most importantly, based on different scenarios and different traffic requirements, we can flexibly combine different functional modules, allocate resources, and enhance the flexibility of the network. And it can control the user layer, as well as the division of the user layer, for network segmentation. Let the business decide the network, and the network moves to the business as needed.

3. The ecosystem of SDNFV

Nearly all major operators, equipment vendors, cloud data centers, and Internet companies all over the world are conducting research and deployment of SDN and NFV. Major international organizations are also making efforts to promote relevant standards and technology development. SDNFV will usher in the golden age. .

SDNFV's ecosystem can be divided into Internet companies represented by Google/BAT, network equipment vendors represented by Cisco/Huawei, chip vendors represented by Broadcom/Intel, and SDNFV represented by Big Switch and Ximai Technology. New business.

3.1, Internet provider

Internet companies represented by Google/BAT are very active on SDN. Internet companies' SDN solutions are characterized by Internet-based services provided to customers, rather than specific SDN products.

Google's use of Openflow's B4 WAN is a typical SDN case, increasing WAN utilization from 30% to 90%.

Facebook announced the OCP Open Computing project, which is intended to customize a range of hardware designs including data centers, servers, and switches.

Ali has used Openflow and VXLAN to transform the cluster network. SDN plays an important role in the automation, rapid delivery and rapid change of Ali network.

Tencent is using SDN technology to optimize the data center network and propose "Network as a Router".

Baidu uses SDN to prevent traffic attacks and uses SDN to integrate remote data centers.

3.2, network equipment vendors

SDN is the trend of the times. The traditional network equipment vendors represented by Cisco/Huawei are actively transforming to SDN.

Cisco introduced ACI (Application Centric Infrastructure). ACI is primarily hardware-based, with new application-aware SDN switches that support custom ASICs and commercial chips. It also includes a policy controller, called the Application Policy Infrastructure Controller (APIC), which assigns service levels to applications and prioritization of various applications.

Huawei has launched an agile network. Huawei's agile network is a next-generation network solution released by Huawei for the enterprise market. It aims to transform itself into the IT enterprise network market through the advantage of the CT operator market. Its controller is SNC.

3.3, chip vendor

At present, most of the SDN hardware switches use the traditional chip or NP to implement the Openflow function, and there are still many potentials not mined. Chip companies such as Broadcom and Intel are actively developing SDNFV chips. Intel is increasingly using the DPDK to unify the NFV forwarding plane with x86.

3.4, SDNFV new business

Big Switch is a typical SDN startup, with everything from applications to Controllers. Big Switch dominates the open source project Floodlight.

Ximai Technology SDNFV Architecture

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Capacitive Touch Screen

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