About the course

Note: This course is in English Language

Why I Created This Course

 

I will be honest with you. When I first heard the word SD-WAN, I thought, okay, this is going to be another one of those complicated technologies that will take months to understand. I put it off. I kept saying "I will learn it later." I was afraid, right?

 

But then one day my client asked me , "Vishnu, we want to migrate our entire WAN to SD-WAN. Can you design it for us?" And I had no choice. I had to learn it. Fast.

 

So I sat down, took some courses, read some documents, and started building a lab. And I want to tell you what happened next, because this is the part that surprised even me. Within one week, I was able to configure SD-WAN controllers, bring up edges, build tunnels, and configure basic policies. One week. That is it.

 

And the reason was simple. I already knew routing. I already knew IPSec. I already knew BGP fundamentals. And guess what? SD-WAN uses all of these. The same OMP protocol is just like BGP. The same IPSec is used for tunnel security. The same routing concepts apply just now there is a centralized controller doing the work instead of you typing on each device.

 

I thought SD-WAN would be a completely new world. It was not. It was the same old networking, just done in a smarter way. That moment, I decided that I have to teach this. Because I know there are thousands of network engineers sitting exactly where I was. Afraid of SD-WAN. Thinking it is too complex. Thinking they need to learn from scratch again. They do not. They just need someone to show them the connection between what they already know and what SD-WAN is doing.

 

That is why this SD-WAN course exists. I created these 40 hours of content for you. So you can have the same "oh, I get it" moment that I had but in a much more organized way.

 

What This SD-WAN Course Will Do For You

 

After completing this 40-hour SD-WAN course, you will not be afraid of SD-WAN anymore. That is the most important thing. Fear will go. Confidence will come. You will be able to sit in a meeting where someone says "we need to design an SD-WAN network" and you will not go blank. You will ask intelligent questions. You will understand the architecture. You will know what controllers are needed, how edges connect, what OMP does, how policies work.

 

You will be able to design a real SD-WAN network from high level design to low level design. Not just understand it from a book but actually design it for a customer. You will be able to do a legacy to SD-WAN migration. This is a big deal. In the real world, most projects are not greenfield. You have existing MPLS, existing routers, existing configurations. You need to migrate. After this course, you will know how to do that without breaking things.

 

You will be able to configure Application Aware Routing. This is one of the most powerful features of SD-WAN. You tell the network that if video conferencing is going, take this path. If file transfer is going, take that path. You will know how to set this up.

 

And you will be able to do all of this in a lab. We build the entire SD-WAN lab from scratch in this course. Virtual devices, controllers, edges and everything.

 

Who Should Take This Course

 

This SD-WAN course is for network engineers who already understand routing fundamentals. If you know what BGP does, if you have configured OSPF, if you understand what a WAN link is, you are ready for this course.

 

This course is also good for senior engineers who have been in networking for many years but have been avoiding SD-WAN because it looks complicated. Believe me, your experience will actually make this course faster for you. You will connect the dots very quickly.

 

This course is for anyone preparing for Cisco ENSDWI 300-415 SD-WAN certification exam. The topics we cover align with the exam blueprint. You will build strong conceptual and practical understanding that will help you in the exam.

 

If you are working in a company that is planning an SD-WAN migration, this course is for you. You will learn the real-world design and migration process, customer requirement collection, high level design, low level design, migration strategy, all of it.

 

This course is also for people who are moving from MPLS or DMVPN networks and want to understand how SD-WAN compares and what the migration path looks like. One honest point is that if you have zero networking knowledge and have never configured a router, this is not the right starting point for you. I recommend you first take the Routing Fundamentals course or the free CCNA course available at BridgeWhy. Once you understand basic routing, come back here. SD-WAN will make complete sense then.

 

The Real Problem This Course Solves.  Mr. Rahul's Story

 

Let me tell you about Rahul. Rahul is a network engineer with 8 years of experience. He knows OSPF very well. He has configured BGP in production. He is good with MPLS. His manager trusts him.

 

One day, Rahul's manager calls him. "Rahul, we have a big project. The client wants to migrate from MPLS to SD-WAN. I want you to lead the design." Rahul says "sure" on the call. But inside, he is nervous.

 

That evening, Rahul sits at his computer and searches "SD-WAN architecture." He reads about vManage, vBond, vSmart. He reads about OMP, TLOC, BFD, App-Aware Routing. He watches some YouTube videos. But after 3 hours, he is more confused than when he started. Nothing is connecting. Everything looks new.

 

Next day in the meeting, when the client starts asking questions about SD-WAN design, Rahul is quiet. He cannot contribute. His manager covers for him, but the confidence is gone.

This happens to so many engineers. Not because they are not smart. But because they are trying to learn SD-WAN without connecting it to what they already know.

 

Here is what Rahul actually needed to hear. vManage is the manager,  like a smart NMS. vBond is the first point of contact, like a receptionist that helps edges find controllers. vSmart is the brain, it runs OMP, which is just like BGP for SD-WAN. And the edges are like your regular routers, just now managed centrally.

 

That is it. That is the whole architecture. And once you see it this way, everything else, OMP, TLOC, policies, Application Aware Routing, all of it starts to make sense. This is how I teach in this course. I connect SD-WAN concepts to what you already know. And that connection changes everything.

 

 

Complete SD-WAN Course Curriculum: 40 Hours, 20 Classes

 

Module 1: SD-WAN Foundation — Why Behind SD-WAN

Before we touch any configuration, we talk about why. Why did SD-WAN come into existence? What problem was the networking world trying to solve? We look at the business drivers, the technical triggers, and the architectural philosophy behind SD-WAN. This module gives you the foundation that makes everything else easy to understand. 2 hours.

 

Module 2: WAN History — How We Got Here

To understand SD-WAN, you need to understand traditional WAN. We cover the full history from leased lines to Frame Relay to MPLS to DMVPN. We look at how enterprise WAN evolved and what limitations each technology had. When you understand the history, the problems that SD-WAN solves become very clear. 2 hours.

 

Module 3: Issues in Current WAN

What is actually broken about traditional WAN? We go deep into the specific technical and business problems which include high cost of MPLS, rigid architecture, inability to use broadband efficiently, lack of application visibility, slow provisioning time, and manual management. Each problem directly maps to an SD-WAN solution. 2 hours.

 

Module 4: Control Plane vs Data Plane. The Core Concept

This is the foundation of all SDN technologies including SD-WAN. What is the control plane? What is the data plane? Why does separating them matter? We use very simple analogies to explain this, and once you understand this separation, SD-WAN architecture will feel very natural to you. This is one of the most important modules in the course. 2 hours.

 

Module 5: SD-WAN Controllers and Network Security

Now we meet the controllers, vManage, vBond, and vSmart. What does each one do? How do they communicate with each other? How do edges find the controllers? We also cover the security architecture — certificates, authentication, and how trust is established in the SD-WAN fabric. 2 hours.

 

Module 6: TLS and IPSec in SD-WAN

SD-WAN uses two types of security. TLS for control plane communication between controllers and edges. IPSec for data plane tunnels between edges. We explain both technologies clearly. If you already know IPSec from traditional networking, you will recognize it immediately here. 2 hours.

 

Module 7: Create SD-WAN Lab from Scratch

Hands-on time. In this module, we build a complete SD-WAN lab using virtual devices. I show you exactly how to set up the environment, install the controllers, and prepare for configurations. No expensive hardware needed. Everything runs virtually. You will have your own working SD-WAN lab after this module. 2 hours.

 

Module 8: Initial Configuration of Controllers and Edges

Now we configure. vManage initial setup. vBond configuration. vSmart setup. And then we onboard edge devices. I walk you through every step. By end of this module, you have a working SD-WAN fabric — controllers talking to each other, edges connected, basic connectivity established. 2 hours.

 

Module 9: OMP, Templates and NAT

OMP is the Overlay Management Protocol, the routing protocol of SD-WAN. Think of it as BGP for the overlay. We explain OMP in detail and how it works, what routes it advertises, how vSmart uses it to control traffic. We also cover templates, which are one of the biggest time-savers in SD-WAN management. And we configure NAT for internet access. 2 hours.

 

Module 10: DIA, TLOC Extension and Restricting Tunnels

Direct Internet Access: how to let branch sites access internet directly without going through hub. TLOC Extension: how to extend transport locators for complex deployments. And how to restrict tunnels between specific sites. These are real-world features that come up in almost every SD-WAN design. 2 hours.

 

Module 11: Application Aware Routing

This is one of the most exciting features of SD-WAN. You can tell the network — if delay is below 50ms, use MPLS. If MPLS delay goes above 100ms, switch to broadband automatically. We configure Application Aware Routing policies and see them working in the lab. This is the power of SD-WAN made visible. 2 hours.

 

Module 12: Customer Requirement Collection

Now we shift to design. Before you design anything, you need to understand what the customer needs. What sites do they have? What applications run on their WAN? What are their bandwidth requirements? What is their budget? What is their tolerance for downtime? We cover the complete requirement collection process with real templates. 2 hours.

 

Module 13: SD-WAN High Level Design

Based on customer requirements, we create a high level design. How many controllers? Where to place them? What transport types to use?  MPLS, broadband, LTE? Hub and spoke or full mesh? What is the migration approach? We go through complete HLD creation with a real case study. 2 hours.

 

Module 14: SD-WAN Low Level Design

From high level to low level. IP addressing plan, controller sizing, edge device selection, policy design, template design, routing design. All the detailed engineering decisions that go into an SD-WAN LLD. This module prepares you for real enterprise SD-WAN projects. 2 hours.

 

Module 15: SD-WAN Policies Deep Down

Policies are the heart of SD-WAN. Control policies, data policies, application policies — we cover all of them in detail. What is a control policy? What is a data policy? How do you create them? How do they interact? By the end of this module, you will understand SD-WAN policies at a deep level. 2 hours.

 

Module 16: Legacy to SD-WAN Migration

This is extremely important for real projects. How do you migrate from existing MPLS network to SD-WAN without service disruption? What is the cutover process? How do you manage coexistence period? How do you rollback if something goes wrong? We cover the complete migration methodology. 2 hours.

 

Module 17: Service Chaining and Cloud on Ramp

Service Chaining — how to insert security appliances (firewalls, IPS) into the traffic path in SD-WAN. Cloud on Ramp — how SD-WAN optimizes connectivity to cloud applications like Microsoft Azure, AWS, Salesforce. These are advanced but important features in modern SD-WAN deployments. 2 hours.

 

 

What Makes This SD-WAN Course Different

 

1. Taught by Someone Who Was Afraid of SD-WAN

 

I do not pretend that SD-WAN was always easy for me. I was afraid of it, just like you. And because of that, I know exactly where the confusion happens. I know which concepts look complicated from outside but are actually simple once you see the connection to basics. I teach from that perspective. I do not assume you know everything. I start from where you are.

 

2. 40 Hours is Complete, Not Rushed

 

Many SD-WAN courses are 10 to 15 hours. They cover the surface. They show you some configurations. But after you finish, you cannot actually design anything. You cannot do a migration. You cannot answer customer questions.

 

This course is 40 hours because I believe in completeness. We cover foundation, architecture, deep configuration, design, real-world project methodology, and migration. When you finish this course, you are actually ready to work on SD-WAN projects. Not just pass a quiz.

 

3. Real Design Skills, Not Just Theory

 

Most courses stop at configuration. I take you further. I teach you how to collect customer requirements, create high level design, create low level design, plan migration strategy. These are the skills that differentiate a senior network engineer from a junior one. These are the skills that clients pay for.

 

4. Available in Hindi and English

 

I am from northern India. Hindi is my mother tongue. I know how much easier it is to understand complex technical concepts in the language you think in. Both Hindi version and English version of this SD-WAN course are 40 hours. Same content. You choose your language.

 

5. 5 Hours Free Preview — No Commitment

 

I want you to be sure before you invest money. So the first 5 hours of this SD-WAN course are completely free. No credit card needed. Watch the free modules. See how I explain. See if my teaching style connects with you. Then decide.

 

Watch how I explain why behind SD-WAN. Watch how I connect traditional WAN problems to SD-WAN solutions. If that clarity resonates with you, the rest of the course will too.

 

6. Lab from Scratch — You Build It Yourself

 

We do not just show you configurations on a pre-built lab. You build the entire SD-WAN lab yourself from Module 7 onwards. This hands-on approach means you understand every component — not just as a viewer, but as someone who actually set it up.

 

7. 1300+ Students Already Learning

 

More than 1300 students have already enrolled in this SD-WAN course. Network engineers from India, from Middle East, from the US, from Europe — all learning SD-WAN together through BridgeWhy. Their enrollment is their vote of confidence. Come join them.

 

What you need for this SD-WAN course:

 

A computer with at least 32 RAM and 8 vCPU is ideal for running virtual SD-WAN lab. An internet connection. Willingness to practice — this is not a passive course. And patience — SD-WAN has many components and we go deep.

 

What you do not need:

 

Physical Cisco devices. We use virtual devices and the course shows you how to set them up. Advanced programming knowledge. We do not write code here. Expensive lab infrastructure. Everything we use is virtual. Any prior SD-WAN experience. We start from zero.

 

Learning Approach

 

I ask questions throughout the course. I say "right?" often because I want you to pause and confirm your own understanding. I use very plain English — no complicated jargon. If a technical term must be used, I explain it in simple language first.

 

I connect every SD-WAN concept to something you already know. OMP? Think of it like BGP for overlay. vBond? Think of it like a directory service. vSmart? Think of it like a central policy server. These connections make learning faster and make it stick longer.

 

I use stories and examples throughout. You will meet characters like Rahul who faces real network engineering situations. You will see how SD-WAN solves problems that come up in actual jobs.

 

Courses in Hindi version have a more casual, conversational energy. English version is equally detailed and thorough. Both versions have the same 40 hours, same 17 modules, same hands-on labs.

 

 

Student Outcomes

 

After completing this SD-WAN course, you will be able to:

 

Design a complete SD-WAN network from scratch based on customer requirements. Do a legacy WAN to SD-WAN migration in real production environments. Configure SD-WAN controllers, edges, OMP, templates, policies in a lab environment. Explain SD-WAN architecture to customers and management with confidence. Implement Application Aware Routing to optimize application performance. Configure Service Chaining and Cloud on Ramp. Prepare for the Cisco ENSDWI 300-415 certification exam with solid conceptual foundation.

 

Build Your Complete Networking Career Path

 

SD-WAN is one important skill in your networking journey. Here are other courses to build your complete knowledge:

 

Start or Strengthen Your Foundation:

CCNA for Know-Nothing Learner (FREE): Perfect for beginners

Routing Fundamentals (FREE): Essential before SD-WAN

 

Deep Dive into Routing Protocols:

- OSPF, BGP, MPLS from Scratch: The three most important routing protocols

- TCP from Scratch: Understand transport layer deeply

 

Modern Enterprise Networking:

- SD-WAN from Scratch in Hindi Version — Same content in Hindi

- SD-Access from Scratch (FREE) — Software defined campus networks

- VXLAN and BGP-EVPN — Data center overlay networks

 

Automation and Programming:

- Network Automation from Scratch — Python, Ansible, Linux

- Python for Network Engineers — Just Python

- Linux for Network Engineers — Just Linux

 

Save Money — Get Everything:

- One year plan — This plan has all the courses in website for one year.

 

See all BridgeWhy courses Here

 

CALL TO ACTION

 

Start learning SD-WAN today. First 5 hours are completely free.

 

Watch the free preview. See how I explain the why behind SD-WAN. See how your existing routing knowledge makes SD-WAN easy. Then enroll for full access.