1, SDNFV definition SDNFV is an abbreviation for Software Defined Network Function Virtualization. Software Defined Network (Software Defined Network, SDN) plus Network Function Virtualization (Network Function Virtualization, NFV) merged. SDN was born at the Clean Slate at Stanford University in the United States. The research team headed by Professor Nick McKeown at Stanford University put forward the concept of Openflow for pilot innovation in campus networks. Based on Openflow's open and programmable features for the network, the concept of SDN came into being . The typical architecture of SDN is divided into three layers, the top is the application layer, including a variety of different services and applications; the middle is the control layer, which is mainly responsible for controlling and processing the data plane resources; the lowest layer is the infrastructure layer, Data processing, forwarding and status collection. SDN inherently has four major characteristics: separation of control and forwarding, equipment resource virtualization, hardware universalization and software open and programmable. The NFV was co-sponsored by a number of large carriers to carry a wide range of functional software processes by using generic hardware such as x86 and virtualization technology. Typical applications are some CPU-intensive features that require less network throughput. The main functional virtualization evaluations are WAN Accelerator, Signaling Session Controller, Message Router, IDS, DPI, Firewall, CG-NAT, SGSN / GGSN, PE, BNG, RAN and others. SDNFV combines SDN with NFV, takes SDN controller as the control plane of the network, takes NFV as a new generalized infrastructure or forwarding plane, orchestrator for business orchestration, gets through SDN and NFV, and makes a fundamental innovation change to network architecture . SDNFV enables customers to get out of entrenched vendor lock-in, flexibly and quickly provide elastic networks on demand based on the nature of software, facilitate growth, increase agility, and become a catalyst for business growth. 2,5G / Key Technologies in the Internet of Things 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 demand" on the 5G has been widely recognized by the industry in advance. In terms of capacity, 5G compared to 4G will achieve 1000 times the mobile data traffic per unit area; in the transmission rate, the typical user data rate increased 10 to 100 times the peak transmission rate will reach 10Gbps; in terms of delay, end to end Delay will be 5 times shorter than 4G, the target as low as 10ms, and even in some special scenarios as low as 1ms; and scalability, the number of networkable devices than the 4G era will increase 10 to 100 times; In addition, low power MMC (machine type device) battery life also increased by 10 times. Internet of Things era. There will be 50 billion connected devices worldwide by 2020, while the likelihood of each new device being exposed to hacker attacks is further increased. Another big challenge stems from the amount of data migrating to this globalized IoT, which IDC predicts will be 10% of all data on Earth by 2020. Then there is a wide variety of devices that need to be managed and supported, ranging from network switches that support popular management applications and protocols to legacy legacy SCADA devices and those that lack computing or memory To support standard authentication or encryption. Finally, there is also a need for very rapid and even real-time responses, especially to applications that involve safety (eg, hazardous industrial processes) or business (such as monitoring inventory or customer behavior). Given the complexity and so large scale of 5G and IoT, manual network management simply does not work. SDNFV provides the only viable, cost-effective way to manage 5G and the Internet of Things and enhances network and data security on it, minimizes bandwidth requirements, maximizes the performance of applications and leverages data analytics. SDNFV plays a key role in our journey towards 5G / IoT. We need to fundamentally refactor and reorganize the network infrastructure. The most important thing is that we can flexibly combine different functional modules, allocate resources, and enhance the resilience of the network based on different scenarios and traffic requirements. And it can control the user layer, as well as the user layer division, network slicing. Let the business decide the network, the network on the business move. 3, SDNFV ecosystem Nearly all of the world's major operators, equipment providers, cloud data centers and Internet companies are conducting research and deployment of SDN and NFV. All major international organizations are also making every effort to promote the development of relevant standards and technologies. SDNFV will usher in a golden age . The ecosystem of SDNFV 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 SIM Technologies New business. 3.1, Internet providers Internet companies represented by Google / BAT are very active on SDN. The Internet company's SDN solution features Internet-based services to customers rather than specific SDN products. The B4 WAN that Google uses Openflow to transform is a typical SDN case, increasing WAN utilization from 30% to 90%. Facebook announced the OCP Open Computing project, aiming to customize a range of hardware designs including data centers, servers and switches. Ali has already used Openflow and VXLAN to transform the cluster network. SDN Ali network automation, rapid delivery, rapid change plays an important role. Tencent in the use of SDN technology to optimize the data center network, made "Network as a Router." Baidu uses SDN to prevent traffic attacks and uses SDN to integrate remote data centers. 3.2, network equipment providers SDN is the trend of the times, the traditional network equipment vendors represented by Cisco / Huawei, are actively transforming to SDN. < 1 2 > China Industrial Electronics Network: This content is reproduced in the co-media or other Internet sites, China Industrial Electronics Network posted this article for the purpose of passing more information does not mean agree with their views or confirm their description! News, technical articles submitted QQ: 928246603 E-mail: news@cnelc.com Related Reading