ISC2 CISSP (Certified Information Systems Security Professional)Communication and Network SecurityMedium
An organization is deploying a new Software-Defined Wide Area Network (SD-WAN) solution across its geographically dispersed branch offices. The IT team needs a centralized component that can dynamically provision, configure, and monitor network services, as well as apply security policies consistently across the entire SD-WAN fabric. Which SD-WAN component fulfills this role?
- ASD-WAN Gateway
- BSD-WAN Edge Device
- CSD-WAN Orchestrator
- DSD-WAN Controller
Show answer & explanationAnswer & explanation
Correct answer: C. SD-WAN Orchestrator
The SD-WAN Orchestrator is the centralized management plane that provides a single pane of glass for configuring, monitoring, and managing the entire SD-WAN deployment, including security policies, across all edge devices and gateways. The controller handles runtime decisions, while edge devices are the endpoints.
Why the other options are wrong
- A. An SD-WAN Gateway provides connectivity between the SD-WAN fabric and external networks (e.g., cloud, internet), but it's a data plane component, not the central management.
- B. An SD-WAN Edge Device is the physical or virtual appliance at a branch office that connects to the WAN, but it's managed by the orchestrator/controller, not the central management itself.
- D. An SD-WAN Controller manages the data plane and control plane functions, making real-time routing and policy decisions, but the orchestrator provides the higher-level, centralized configuration and monitoring.
SD-WAN Orchestrator
A centralized management component in an SD-WAN architecture responsible for provisioning, configuration, policy application, and monitoring across the entire SD-WAN fabric.
- Provides a 'single pane of glass' for management.
- Translates high-level business policies into network configurations.
- Manages the lifecycle of SD-WAN deployments.
Memory trick: The 'Orchestrator' conducts the entire network symphony.