Free VLAN Diagram Maker — Map Network Segments

See it work

VLAN diagram examples.

Same tool, four requests. Every drawing below is a real render.

What you type

Create a VLAN network with separate production and IoT routers connected to a core switch, production and IoT access switches, office devices and file server on VLAN 10, and an entrance camera and NVR on VLAN 20.

Then tryAdd a printer to the production VLAN.Change the IoT VLAN from 20 to 30.

Network topology: IoT and production VLANs

Network topology · Cisco-convention topology icons · schematex-network

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The drawing

What a VLAN diagram is.

A VLAN diagram shows how one physical network is divided into separate logical networks. It identifies the VLAN IDs, the switches and devices in each segment, and the links that carry one or more VLANs.

Use access labels for a device that belongs to one VLAN and trunk labels for an uplink carrying several VLANs. Add the router, firewall or Layer 3 switch that provides inter-VLAN routing when segments must communicate.

Standard: Cisco-convention topology icons
Also follows: Hierarchical / spine-leaf models · ANSI/TIA-606 · ONVIF
Engine: schematex-network
Editable: Double-click text, drag nodes
Export: SVG · PNG · PDF

Network topology: What a VLAN diagram is

Who uses it

Who uses VLAN diagrams.

Network engineers

Record trunk uplinks, access ports and VLAN assignments before changing a switch configuration.

IT and security teams

Review whether cameras, point-of-sale devices and office systems are separated into the intended zones.

Virtualization administrators

Document redundant host uplinks and the management and workload VLANs they carry.

How it works

How to make a VLAN diagram in three steps.

Describe it

One paragraph is enough to start.

“Create a VLAN network with separate production and IoT routers connected to a core switch, production and IoT access switches, office devices and file server on VLAN 10, and an entrance camera and NVR on VLAN 20.”

See the drawing

Drawn by the right engine.

Say what changes

Every edit keeps a version.

Add a printer to the production VLAN.

V2 · DRAWN FROM V1, NOTHING RETYPED

FAQ

Common questions

What is a VLAN diagram?

A VLAN diagram maps the logical segments on a switched network. It can show VLAN IDs, member devices, access ports, trunk links and the device that routes between VLANs.

What is the difference between an access port and a trunk port?

An access port carries traffic for one VLAN, usually to an endpoint. A trunk port carries traffic for multiple VLANs, usually between network devices, using VLAN tags.

How do I show inter-VLAN routing?

Include the router, firewall or Layer 3 switch that connects the VLANs, and label its uplink or interfaces with the VLANs it handles.

What should I label in a VLAN diagram?

Label each VLAN with an ID and purpose, then label relevant switch ports as access or trunk. Include connected devices where they help explain the segment.

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