As distributed organizations experience abundant Internet bandwidth, prioritize access to key applications, and simplify the benefits of centralized management, SD-WAN technology is becoming mainstream.
Leading IT organizations are deploying SD-WAN solutions with software-based routing and replacing traditional branch router architectures.
As SD-WAN becomes the main platform, the branch router market will suffer major damage. The spread of SaaS-based applications, hybrid cloud deployment and universal mobility continues to drive the transformation of WAN traffic patterns.
In addition to the substantial increase in WAN bandwidth requirements, traffic is now flowing directly from branch/mobile locations to cloud-based applications. This reduces reliance on traditional MPLS networks that connect branch offices to centralized data centers.
Traffic back from the branch to the Internet, back to the headquarters, and then to the Internet to access SaaS or Web applications, which is very inefficient in connecting distributed labor to the cloud.
The SD-WAN architecture can achieve a fundamental transformation of the branch network architecture. SD-WAN provides the routing required to connect branch offices to appropriate WAN links (including MPLS, Ethernet, Internet broadband, cables, and 4G LTE), allowing IT organizations to replace (reuse) existing branch routers .
Whenever traffic patterns, application QoS or security policies change, the replacement of routers eliminates the need to manually reprogram each router, which simplifies branch network operations. SD-WAN's centralized simplified management system can be easily deployed and automatically control application traffic.
SD-WAN supports other functions in the branch, including WAN optimization and stateful firewall.
This eliminates the need for separate WAN optimization equipment and provides IT organizations with the option of distributing or centralizing branch network security.
The popularity of SD-WAN and the benefits it brings are the improvement of bandwidth economy, the advantages of application priority division and centralized management, which are rapidly changing the network architecture of branch offices. Distributed IT organizations can now implement an application-driven WAN Edge architecture, which provides a flexible branch network deployment model.
IT leaders should choose SD-WAN technology, which is fully compatible with existing routers and firewalls, and can achieve the transition to a "thin" branch network architecture-an architecture that does not require traditional routers or firewalls.
The new WAN edge architecture will provide consistent application performance, strong security and operational efficiency.
The above is the introduction that SD-WAN has made traditional routers attract much attention.
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