SDN still faces many problems and challenges. For SDN, first, the standard fragmentation is serious, especially the northbound interface between the controller and the cooperative orchestrator is not uniform, and it is difficult to achieve cross-manufacturer collaboration; the second is that the southbound interface of the controller is still immature. Cross-vendor interoperability is not feasible; third, complexity makes end-to-end cross-vendor management and operation still a dream. But overall, SDN has entered the commercialization track, and SD-WAN is the main business application scenario.
Since 2017, SD-WAN has become a popular niche for operator network transformation and enterprise private line upgrades. By 2018, large equipment vendors have entered the market and released SD-WAN solutions with the help of the overall strength of cloud-network collaboration. From a global perspective, SD-WAN is even hotter.
SD-WAN:
demand has now
from the analysis of Gartner, IDC, Ovum market research and other institutions, global business-to-SD-WAN to show interest. In China, operators have also shown great openness, striving to balance the impact of SD-WAN on traditional private line services and actively embrace it. The development trend of SD-WAN and hybrid networks is unstoppable.
The large-scale commercial implementation of SD-WAN is mainly due to two keys:
one is deployability.
Many major manufacturers provide end-to-end solutions, and some non-industry manufacturers provide fast-packed products, which usually means that many devices are not specifically designed for SD-WAN, or the solutions lack sufficient flexibility; at the same time, Adopting a whole set of solutions from the same manufacturer may lead to difficulties in interconnection and interoperability with other manufacturers' equipment, hindering openness, but actually hindering deployment.
For example, some chain companies have hundreds of branches, and it is unlikely that all branches across the country will launch SD-WAN at one go. Instead, they will consider the actual situation of each branch to deploy in a "fancy arrangement", and some branches may not be willing to change. From the perspective of the supply side, although operators say that the network is a game of chess across the country, we have found that the needs of different departments and regions are still different. For example, in the customer department, the deployment progress varies from place to place, and there are also flower arrangements that are superimposed on traditional networks. With mixed and smooth evolution, services cannot be affected.
The second is operational.
The fundamental purpose for operators to deploy SD-WAN is to use SD-WAN to transform from a traditional "pipeline" provider to an ICT integrated service provider. This requires deconstruction of the network, conforms to the characteristics of software definition and openness, and provides various flexible network services to customers. For example, application agency services. Operators become “wholesalers” of network services, providing customers with value-added services such as cloud, firewall, Internet behavior management, and various IT applications. Customers do not need to deploy their own networks and services, and provide one-stop solutions to all networks Access and IT service requirements can be used at a low cost, operation and maintenance are simple, and security is guaranteed.
The business needs of small and medium-sized customers have become complicated, instead of building complex networks and purchasing and maintaining IT services by themselves. This is also the value manifestation and transformation needs of operators. Large-scale enterprises and chain organizations are accelerating their cloud and virtualization activities, and correspondingly, the demand for SD-WAN is also rapidly increasing.
New production methods such as the Industrial Internet have increased the demand for companies to go to the cloud. Chinese companies tend to adopt a hybrid cloud architecture, with both public and private clouds. Cloud channels need to be opened up and even drifted; the network will also change in coordination. This is also an opportunity for SD-WAN and SD-WAN enterprises.
The above is the introduction of SD-WAN's goal to be deployable and operable.
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