Importance of SD-WAN
SD-WAN is more than just a WAN version of SDN. SD-WAN does not refer to a specific technology, but is an important trend for solving problems in corporate networks. At present, the functions provided and the technologies adopted differ depending on the operator / vendor, but the study should be started after fully understanding the value as an effective solution for agile development of the company's business and reduction of network operation management cost.
In the IT department of domestic companies, the construction and operation of their own network has been one of the important tasks for many years. Japan is capable of using a wide variety of network lines and services such as MPLS (Multi-Protocol Label Switching) for enterprises, wide area Ethernet, leased lines, and broadband lines, which are generally called "IP-VPN" in Japan. Is in a rare environment in the world, and by making full use of its abundant choices, the IT departments of domestic companies have built / operated a robust and high-performance network at a reasonable cost.
A typical example of network configuration in a large company. It is very common to select lines / services with excellent cost performance and interconnect them after the new line / service is launched or before the end of the contract period of the network line / service. .. However, networks with different architectures and policies such as office LANs, data center LANs, domestic WANs, overseas WANs, mobile WANs, remote access, and Internet connections coexist, making it difficult to manage integrated operations of the entire corporate network. I'm falling.