SD WAN connects employees, devices, and applications into a unified communication network where software takes the lead. This ensures network security, seamless internet connectivity, application prioritization and optimization, and complete control over employee activity.

 
 

How does SD WAN work?


Certified engineers analyze the customer’s specific needs and configure SD WAN routers accordingly. This includes establishing network policies and traffic rules at a central location, prioritizing applications, assigning access rights to specific applications and other content for each employee, and activating the necessary network security add-ons.


At each planned connection location, a preconfigured SD WAN router is installed, and all routers - i.e., locations - are then connected into a unified, secure, and reliable network.


Additionally, a secondary internet connection is installed, which automatically activates if the primary connection fails, ensuring uninterrupted service for the customer, even during network incidents.


Once the service is installed, comprehensive testing is conducted to ensure the network operates in full alignment with the defined requirements.

 

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The key features of SD WAN functionality are as follows


Centralized control

SD WAN uses a central controller that allows IT administrators to define network policies and traffic rules in a central location. These policies apply to all SD-WAN nodes in the network. Instead of manually configuring each router individually, everything is managed via the controller, simplifying network management.


Dynamic Traffic Routing

SD-WAN dynamically routes traffic across various WAN connections (such as MPLS, internet, 4G/5G, or others) based on real-time network conditions and predefined policies. This technology monitors the performance of each connection and automatically redirects traffic in real time to the best available connection if latency or disruptions occur, ensuring higher reliability and service quality.


Quality of Service (QoS) and Optimization

SD-WAN makes it possible to prioritize traffic based on the type of application. For example, business-critical applications like ERP, CRM, VoIP, or video conferencing can take priority over all other applications, such as social media or non-essential traffic types (like large file downloads). The technology leverages data compression and deduplication to optimize available connections and reduce network load.


Security

SD WAN often includes integrated security features, such as protection against attacks and monitoring of network threats. Centralized management ensures consistent application of security policies across all locations.


Easy Connection of Remote Locations

SD WAN is designed to easily connect various business locations, branches, and remote users using a variety of available connections, whether through standard internet, mobile networks, or private WAN lines. Implementing new locations is faster because it doesn’t require specialized equipment or complex network topologies.

 
 

Service benefits

 

Cost Reduction

No investment in hardware or specialized personnel for maintenance is required. In addition, the customer gains significantly higher available capacity per location.

Optimization of Internet Links

SD WAN enables the aggregation and simultaneous use of multiple internet links, implemented through various access technologies (DSL, fiber optic, LTE, etc.).

Improved Application Performance

Classify applications based on priority (e.g., high, medium, and low). SD WAN dynamically routes all traffic, significantly enhancing overall performance.

Simplified User Privilege Management

Through a user-friendly portal, you can easily define which applications/content specific employees are authorized to access. You can also specify the time intervals during which these permissions or restrictions apply.

Additional (Backup) Internet Connection

A backup 4G internet connection activates automatically if the primary internet connection fails. This ensures uninterrupted functionality of internet services at all times.

Enhanced Network Security

Network traffic is fully protected in accordance with the highest IPSec standards. Additionally, a security add-on is available to further enhance network safety. The security add-on includes URL, DNS, and video filters, as well as an anti-spam service.

Advanced Analytics and Monitoring

Monitor which websites employees visit, how much time they spend on them, internet traffic usage, system resource occupancy, full network analytics, and more – all in real time.

Scalability

SD WAN allows for quick and easy addition of new locations without requiring complex infrastructure.

 
 

Yettel SD WAN Offers

  • Free consultations with certified engineers.
  • Tariff packages tailored to real-world needs.
  • Turnkey solutions, regardless of complexity.
  • Professional support from specialized experts.
  • Detailed reporting on service performance.
  • The ability to reconfigure, remove existing locations, or add new ones.
 
 

FAQ


What is the difference between SD WAN and traditional WAN?

Traditional WAN typically uses hardware routers and fixed connections like MPLS to route traffic. SD WAN uses software for centralized management and enables dynamic routing across different types of connections, including cost-effective options like the internet or mobile networks.

 

What is the difference between SD WAN and VPN?

SD WAN is significantly more flexible, allowing for more efficient traffic routing across multiple transport media (mobile/5G, broadband internet, MPLS, etc.), whereas VPNs are designed to route all traffic through a single network connection.

 

What is the difference between SD WAN and MPLS?

Unlike SD WAN, MPLS is significantly more expensive and less flexible. It also requires longer planning, more complex implementation, and isn’t optimized for the cloud. The throughput of MPLS is significantly slower than that of SD WAN.

 

What are the most common use cases for SD WAN?

  • Connecting business branches and remote locations.
  • Optimizing traffic for cloud-based applications (e.g. Office 365, AWS).
  • Securely connecting remote employees.
  • Reducing costs by replacing expensive MPLS lines.
 

Is SD-WAN a good option for cloud applications?

Yes, SD WAN is especially effective for optimizing traffic to cloud applications. It dynamically routes traffic to the most efficient connections, reducing latency and improving the user experience with cloud services.

 

How complex is SD WAN implementation?

SD WAN is designed for ease of deployment. Centralized control allows for the quick addition of new nodes and connections. In many cases, it operates in a plug-and-play model, where equipment is easily connected and automatically configured according to predefined policies.

 

How does SD-WAN help reduce costs?

SD WAN allows businesses to use cost-efficient connections, such as the internet or mobile networks, instead of expensive MPLS lines. Its centralized management also reduces IT administration and maintenance expenses.