Network Diagram Tool — Draw Network Topology Online

Why Network Diagrams Still Matter

Network diagrams are the universal language of infrastructure. They give IT teams, stakeholders, and new hires a visual map of how systems connect, communicate, and depend on each other.

A well-documented network topology accelerates troubleshooting, simplifies capacity planning, and ensures compliance with security audits. Without one, even simple networks become black boxes that only one person understands.

How It Works — Network Topology Types

This tool supports drawing the most common network topologies by letting you place devices and connect them with links. Here are the topologies you can represent:

• Star — all devices connect to a central switch or hub. Simple to manage and troubleshoot.
• Mesh — devices connect to multiple peers for redundancy. Used in critical infrastructure where uptime matters.
• Tree (Hierarchical) — a root node branches into layers (core → distribution → access). Common in enterprise LANs.
• Bus — all devices share a single backbone cable. Legacy topology rarely seen in modern networks.
• Ring — devices form a closed loop. Data travels in one direction (or both in dual-ring). Used in token ring and some WANs.
• Hybrid — combinations of the above. Most real-world networks are hybrid, mixing star segments with mesh backbones.

Use the Connect tool to draw links between devices and choose the topology that best represents your actual or planned network.

Common Network Symbols

Each device type in the toolbar corresponds to a standard network diagram symbol. Here's a quick reference:

• Server — represents any server (web, database, file, application). Stacked rectangles with indicator lights.
• Router — a device that forwards traffic between networks. Stacked layer icon representing routing layers.
• Switch — a device that connects devices within a single network. Rectangle with port indicator lights.
• Cloud — represents the internet, a WAN, or an external cloud service (AWS, Azure, etc.).
• Computer — a workstation, laptop, or end-user device. Monitor on a stand.
• Firewall — a security device that filters traffic. Grid pattern representing access control rules.

Consistent use of these symbols makes your diagrams immediately readable by IT professionals and stakeholders.

Tips for Clear Network Diagrams

• Label every device — double-click to add meaningful names (e.g., "Web Server 01" instead of "Server").
• Group by function — place servers together, routers at network boundaries, and firewalls between zones.
• Use the cloud icon for anything outside your direct control (ISP, cloud providers, the internet).
• Keep link lines clean — avoid crossing lines when possible; rearrange devices to minimize visual clutter.
• Export as SVG for lossless scaling — perfect for embedding in documentation, wikis, or presentations.
• Load the sample diagram to see an example layout and adapt it for your own network.

Use Cases

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