11000000.10101000
00000001.00001010
SYN → SYN-ACK → ACK
TTL=64 PROTOCOL=6
See How Networks
Actually Work
NetViz Studio transforms abstract networking concepts into interactive simulations. Watch packets move, inspect protocol fields, configure devices, break links, troubleshoot failures, and understand every step.
Built for visual, hands-on networking education.
Live Protocol Preview — TCP
Sender PC-1
192.168.1.10
Web Server
192.168.2.100
Current Event Trace
1. Sender initiates TCP Connection: Transmitting [SYN] segment (Seq=100)
Preview simulation — open the full visualizer to inspect packets and events.
Platform Value
Networking concepts become easier when you can see them.
Move beyond static diagrams and dry text. NetViz Studio provides an interactive sandbox to experiment, configure, and master networking fundamentals.
Visualize
Watch packets, acknowledgements, 3-way handshakes, broadcasts, route updates, retransmissions, and link failures live.
- Packet traversal step-by-step
- TCP SYN/ACK state machines
- Color-coded frame inspection
Configure
Build topologies, assign IP interface addresses, configure static routes, adjust link latency, and test connectivity.
- Drag & drop network canvas
- Host, switch & router configuration
- Dynamic fault injection
Understand
Inspect each event, packet header field, device table, and routing decision through guided step-by-step explanations.
- Layer-by-layer header inspection
- Live ARP & MAC address tables
- Guided labs with auto-validation
Comprehensive Capabilities
Everything you need to master computer networking
Explores protocol details across every layer—from raw binary subnetting to dynamic packet routing and state machines.
Protocol Visualizer
Step through protocol behavior from packet creation to delivery across L2, L3, L4, and L7.
- Packet header field inspection
- Handshake & termination state machines
- Event timeline & step-by-step playback
Topology Builder
Design networks using hosts, switches, routers, firewalls, servers, and configurable links.
- Drag-and-drop node canvas
- IP interface & static route configuration
- Failure injection & ping/traceroute simulation
CIDR Studio
Understand IPv4 addressing through calculations and 32-bit binary network vs host bit visualization.
- Subnet range calculation
- Binary network/host mask breakdown
- VLSM & subnet splitting calculations
Interactive Labs
Learn by completing guided configuration, packet flow prediction, and troubleshooting exercises.
- Automatic objective validation
- Progressive hint system
- Real-world networking scenarios
Packet Inspector
Inspect raw headers, payloads, checksums, and flags layer-by-layer like an educational packet analyzer.
- Layer 2 Ethernet II MAC headers
- Layer 3 IPv4/ICMP headers
- Layer 4 TCP/UDP flags & sequence numbers
Protocol Implementation Status Matrix
Accurate module status across available, in-development, and planned networking protocols.
Deep Layer Inspection
From packet creation to protocol decisions
Select a protocol below to preview its state machine, header structures, and frame delivery behavior.
TCP (Transmission Control Protocol)
Connection-Oriented
Reliable, connection-oriented protocol with 3-way handshake, sequence numbers, ACK tracking, and sliding window flow control.
Key Technical Concepts
- 3-Way Handshake (SYN, SYN-ACK, ACK)
- Retransmission on timeout/packet drop
- FIN 4-way termination flow
See sequence numbers, acknowledgements, window behavior, packet loss, and retransmission.
IPv4 Address Engineering
Calculate and visualize CIDR & subnetting
Enter any IPv4 CIDR prefix below to inspect usable host ranges, wildcard masks, and 32-bit binary network vs host bit allocations live.
192.168.1.0
192.168.1.255
255.255.255.0
0.0.0.255
Interactive Design Workspace
Build the network. Then watch it operate.
Construct custom multi-router subnets, configure IP interfaces and static routes, inject link failures, and trace ICMP pings live on screen.
Simulated End-to-End ICMP Ping Traversal Path
PC-1
Host
Switch-1
L2 Switch
Router-1
L3 Router
Router-2
L3 Router
Switch-2
L2 Switch
Web Server
Server
PC-1 — Host
192.168.1.10/24
Add hosts, switches, routers, and firewalls
Assign IP addresses and subnets per port
Configure L3 routing tables & gateways
Cut links and observe failover behavior
Interactive Guided Practice
Learn by solving real networking scenarios
Troubleshoot misconfigured gateways, analyze TCP handshakes, calculate subnets, and repair broken topologies with automated task validation.
Lab 1: Local Network Communication
Configure two host endpoints on the same Layer 2 switch segment, understand ARP resolution, and test ICMP connectivity.
Lab 2: Fix the Wrong Subnet
Troubleshoot a broken 2-host network where PC-2 was misconfigured into a separate subnet, causing communication failure.
Lab 3: Communicating Across Networks
Configure host default gateways and router Layer 3 interfaces to enable inter-subnet routing between two networks.
Lab 4: CIDR Fundamentals
Calculate subnet mask, network address, broadcast address, and usable host range for 192.168.1.130/26.
Lab 6: TCP Three-Way Handshake
Observe TCP SYN, SYN-ACK, and ACK packet exchange when establishing a connection between client and server.
Lab 7: TCP Packet Loss and Retransmission
Simulate loss of a TCP data segment across a congested link and observe reliable retransmission mechanisms.
Lab 9: DHCP Address Assignment
Simulate the 4-step DHCP DORA process (Discover, Offer, Request, Acknowledge) to dynamically assign IP addresses.
Lab 13: OSPF Neighbor Formation
Configure OSPF process ID, Router ID, and area matching to establish OSPF Full neighbor adjacency.
Simple 4-Step Process
How NetViz Studio Works
Designed for interactive discovery—from initial concept selection to deep packet header inspection.
Choose a Concept
Select a protocol module, guided lab challenge, CIDR subnetting exercise, or custom network topology.
Configure Scenario
Change IPv4 interface addresses, add static routes, adjust link latency, set drop rates, or break links.
Run Simulation
Play packet forwarding automatically or step through the network one event and handshake at a time.
Inspect & Understand
Inspect header fields, ARP/MAC tables, routing decisions, event timelines, and detailed explanations.
Tailored Learning Progression
Designed for every learning style
Whether you prefer watching prepared simulations or building complex multi-router topologies from scratch.
Observe
Watch a prepared simulation step-by-step.
Experiment
Change settings, protocol parameters, and compare outcomes.
Configure
Build custom topologies, interfaces, and static routes.
Troubleshoot
Diagnose and repair intentionally broken network scenarios.
Validate
Receive real-time automated task validation feedback.
Review
Study complete packet event timelines and final explanations.
Your networking lab, saved across sessions
Create a free account to save topologies, resume labs, track progress, and continue simulations from any supported device.
Sign in to sync your custom network diagrams, completed lab task scores, and preferences across devices.
Personalized Workspace Preview
Your centralized learning dashboard
Here is a preview of the personal dashboard available to registered learners to manage topologies, progress, and simulations.
Lab 1: Local Network Communication
Task 3 of 4 Completed (75%)
3-Router OSPF Subnet Topology
6 Devices • 5 Links • Last edited 2 hours ago
TCP 3-Way Handshake & Windowing
Last simulation run: SYN → SYN-ACK → ACK
Tailored For Your Goals
Built for every stage of networking learning
Whether you are preparing for certification exams, teaching lectures, or debugging socket behavior below application code.
Networking Students
Computer Science & IT Undergrads
Turn abstract textbook diagrams into observable, interactive packet movements and state machine transitions.
- Visualize OSI and TCP/IP layers side-by-side
- Watch 3-way handshakes step-by-step
- Understand header fields visually
CCNA & Network+ Learners
Certification Candidates
Master IPv4 subnetting, MAC table learning, default gateways, and static routing required for exam success.
- Practice 32-bit binary CIDR calculations
- Troubleshoot misconfigured subnets & gateways
- Validate answers with instant feedback
Software Developers
Full-Stack & Backend Engineers
Understand transport layer latency, connection pooling, TCP packet loss, and socket behavior below application code.
- See what happens during TCP handshake delays
- Compare TCP vs UDP performance tradeoffs
- Inspect packet drop and retransmissions
Technical Instructors
Professors & IT Trainers
Use dynamic interactive simulations during lectures to explain complex routing, switching, and protocol concepts clearly.
- Live interactive lecture demonstrations
- No local software installation required
- Pre-built lab challenges for assignments
Networking Beginners
Self-Taught Learners & Enthusiasts
Start with guided, plain-English explanations and step-by-step labs before progressing into advanced routing topology design.
- Beginner explanation detail mode
- Progressive hints during lab challenges
- Experiment safely in browser sandbox
Feature Inventory
Complete Platform Capabilities
A compact overview of the simulation controls, protocol inspection engines, and interactive learning tools built into NetViz Studio.
Packet Animation
Smooth canvas rendering of packet traversal across links
Step Playback
Pause, step forward, or rewind simulation steps
Event Timeline
Detailed log of every packet transmit, receive, and drop event
Packet Inspector
Layer-by-layer header field and payload inspector
TCP State Machine
SYN-SENT, ESTABLISHED, FIN-WAIT state visualization
Packet Loss & Delay
Inject link latency and drop rates to test resilience
ARP & MAC Tables
Live dynamic ARP binding and switch MAC table inspection
Routing Tables
L3 longest-prefix match routing decision inspection
CIDR Calculator
Instant IPv4 prefix calculations and usable host ranges
Binary Mask Visualizer
32-bit network vs host bit color-coded representation
Topology Builder
Drag-and-drop canvas for PCs, switches, routers, firewalls
Guided Labs
Step-by-step challenges with interactive objectives
Auto Validation
Real-time verification of IP, route, and packet delivery
Fault Injection
Simulate link cuts, misconfigured IP masks, and drops
Saved Progress
Isolated progress tracking for authenticated users
Responsive Layout
Tailored experience across desktop, tablet, and mobile
Dark & Light Themes
Instant switching between Light, Dark, and System modes
Accessibility First
Keyboard navigation, ARIA focus traps, and reduced motion
NetViz Studio balances rigorous protocol accuracy with visual learning clarity. We model realistic packet headers, MAC/IP lookup tables, and state machines while avoiding unnecessary complexity that obscures core concepts.
Frequently Asked Questions
Got questions? We have answers.
Everything you need to know about NetViz Studio's simulation capabilities, account features, and educational model.
Stop memorizing network diagrams.
Start watching networks work.
Explore packet flow, build topologies, calculate subnets, and practice networking through interactive labs.