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1. The Three Planes of SD-Access Instead of a traditional routing model, SD-Access splits network functions into three distinct planes: Control Plane (LISP): Moves the destination routing database to a centralized mapping system (similar to DNS). It tracks end...

1. The Core Concept: EID vs. RLOC In traditional IP networking, an IP address represents both identity (who the host is) and location (where the host is connected). This dual-nature severely limits security, subnet stretching, and IP mobility. LISP solves this...

1. Why SD-Access Uses VXLAN Instead of LISP for the Data Plane Although LISP is used to manage the control plane, it has a key limitation that makes it unusable for the data plane on its own: LISP Header Limitation: LISP only supports Layer 3 overlays because ...

1. The Policy Plane Framework In a Cisco SD-Access fabric, operational duties are cleanly split across three specialized planes: the control plane runs on LISP, the data plane runs on VXLAN, and the policy plane runs on Cisco TrustSec. Role of VXLAN Headers: T...

1. Core Solution Components Cisco SD-Access provides automated, end-to-end user, device, and application segmentation without requiring a physical network redesign. This architecture relies on two primary components: Cisco DNA Center (DNAC): The central automa...

Applications used by enterprise organizations have evolved over the past several years. As a result, the enterprise WAN must evolve to handle the rapidly changing needs placed on it by these new resource-consuming applications, as shown in the following figure...

1. Core SD-WAN Architecture Concepts Role Separation: The Cisco Catalyst SD-WAN solution separates operational planes to build a highly scalable, secure, and efficient network fabric. Virtualization of Routing: It is based on the same routing principles used o...

The management plane provides control and visibility to the entire fabric. It has the following characteristics: Single pane of glass for Day 0, Day 1, and Day 2 operations Real-time alerting Centralized provisioning Configuration standardization Simplicity of...

The orchestration plane is responsible for zero-touch deployment and security validation during deployment. It has the following characteristics: Performs initial authentication Orchestrates the connectivity between the management, control, and data plane Requ...

Cisco Catalyst SD-WAN Controllers provide a highly resilient, scale-out control plane for the SD-WAN fabric. Key Characteristics Fabric Discovery & Control: Facilitates fabric discovery and distributes control plane information, data plane policies, and applic...

The Cisco Catalyst SD-WAN data plane is responsible for tunnel establishment and data forwarding within the fabric. The main characteristics of the data plane with Cisco Catalyst SD-WAN Edge routers are as follows: Provides secure data plane with other WAN Edg...

Cisco Catalyst SD-WAN software provides a REST API, a programmatic interface for controlling, configuring, and monitoring the Cisco Catalyst SD-WAN devices in an overlay network. You can access the REST API through the Cisco Catalyst SD-WAN Manager web server....

The Cisco Catalyst SD-WAN Analytics platform provides graphical representations of the performance of your entire Cisco Catalyst SD-WAN overlay network over time and enables you to drill down to the characteristics of a single carrier, tunnel, or application a...

Cisco IOS XE is a single image that can be used to deploy both IOS XE and IOS XE SD-WAN on supported platforms. Cisco IOS XE now supports the use of a single "universalk9" image to deploy Cisco IOS XE SD-WAN and Cisco IOS XE functionality on the following devi...

The Cisco Catalyst SD-WAN architecture provides maximum flexibility regarding the deployment of the controllers. You can deploy the three controller types (Cisco Catalyst SD-WAN Manager, Cisco Catalyst SD-WAN Controller, and Cisco Catalyst SD-WAN Validator) ac...

Introduction to APIs Generally speaking, an API is code that allows for two different software programs to communicate with each other. The different software programs represented in the SDN architecture are composed of three stacked layers called the data pla...

Cisco customers and partners can use the Cisco Catalyst Center platform to create value-added applications that use the native capabilities of Cisco Catalyst Center. You can use Cisco Catalyst Center Intent APIs, integration flows, Events and Notification Serv...