What is SDWAN?
Essentially, SD-WAN is based on SDN, which stands for Software Defined Networking. Software-defined networking logically separates the control layer and the data layer within the underlying infrastructure abstracting control, so the infrastructure can be automated and programmed from a common controller via software. SD-WAN takes the principles of SDN and applies them to the wide area network.
The WAN is the highway that interconnects enterprise resources to each other. Some methods of connectivity are broadband, Metro Ethernet, T1, MPLS and LTE. Usually we verbalize the LAN as a single entity but many organizations have more than one WAN, because connectivity will vary based on location and availability.
Each site could have combinations of MPLS, LTE or broadband and each transport is viewed as a separate WAN which is managed separately as unique addressing and may even have different providers. SD-WAN simplifies this and makes it easier to manage.
Plus, it takes all these different LANs and converts what used to be separate disparate networks into one common encrypted network managed by software. SDN provides the achievement of higher network performance and it can dramatically improve availability and application user experience by intelligently leveraging multiple paths.
Gain visibility and active monitoring for the network and the applications running on it. So the network becomes a single entity controlled from a single point increasing agility. You can quickly deploy new sites services or just more bandwidth with no truck rolls or on-site expertise. So SD-WAN is a revolutionary technology. it’s designed to streamline processes saving time and money, but more importantly turn a network into an application intelligent and fully automated software-defined infrastructure.
Cisco SD-WAN Solution
As an industry leader company, Cisco can provide the robust SD-WAN using a secure, cloud-scale architecture that is open, programmable, and scalable. Using the Cisco vManage console, you can quickly establish an SD-WAN overlay fabric to connect data centers, branches, campuses, and colocation facilities to improve network speed, security, and efficiency.
The Cisco SD-WAN solution is made of separate orchestration, management, control and data plane. In this innovative architecture vBond plays as orchestrator, vManage as manager, vSmart as the controller and Cisco edge routers take part as data plane.
In this technology the WAN Edge device is uniquely identified by the chassis ID and certificate serial number. Hardware-based vEdge device certificate is stored in the on-board Tamper Proof Module (TPM) chip installed during manufacturing. Hardware-based Cisco IOS-XE SD-WAN device certificate is stored in the on-board SUDI chip installed during manufacturing. Finally, virtual platforms will be identified using a One-Time Password (OTP) provided by vManage to authenticate the device with the SD-WAN controllers.
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