✦ Hands-on, lab-driven learning
Learn by building it.
No slideware. You build real systems, break them on purpose, and walk away understanding why before how.
Mental model
→ Why before how
→ Mechanism (deep)
→ Build it in a lab
→ Verify the output
→ Break & observe
→ Lessons
Catalog
Three tracks, one rhythm
Every module follows the same loop so the pattern sticks — pick a track and start building.
✅ Available
Foundations
The core mental models. Build a minimal working system from scratch and understand every moving part.
▶ In progress
Deep Mechanisms
Go under the hood. Trace the control path, read the real output, and reason about failure modes.
🧪 Labs & Drills
Break & Observe
Intentional-failure scenarios. Break the system, watch what happens, and learn to debug fast.
The build
You build the whole fabric
Every lab is a real topology you stand up yourself — spines, leaves, and hosts wired end to end.
Spine
Leaf
Host
Reference
Layer by layer
A single source of truth for how the pieces fit together.
| Layer | Description | Location |
|---|---|---|
| Underlay | Reachability between every node in the fabric | Spines & leaves |
| Overlay | Virtual networks carried on top of the underlay | Leaf (VTEP) |
| Control plane | How endpoints and routes are learned and shared | Fabric-wide |
| Edge | Where hosts and external connectivity attach | Leaf ↔ Host |
Spin up your first lab in minutes
One instance, one config, and you're building. No prior setup required.
Start Course 1 →