Network Topology Diagram Generator

Quick Start: Choose topology type → Declare stencil icons for network devices → Connect with arrow syntax → Group into zones with rectangle or package → Wrap in ```plantuml fence.

⚠️ IMPORTANT: Always use ```plantuml or ```puml code fence. NEVER use ```text — it will NOT render as a diagram.

Critical Rules

• Every diagram starts with @startuml and ends with @enduml
• Use mxgraph.* stencil syntax for network device icons (routers, switches, firewalls, etc.)
• Default colors are applied automatically — you do NOT need to specify fillColor or strokeColor
• Use rectangle "Zone" { ... } or package "Zone" { ... } to group devices into network zones
• Use cloud "Name" { ... } for cloud/Internet shapes
• Bidirectional physical links use -- (no arrow); directed flows use -->
• Dashed lines for VPN/wireless/logical links use .. or ..>
• Use skinparam for global styling

Full stencil reference: See stencils/README.md for 9500+ available icons.

Mxgraph Stencil Syntax

mxgraph.<namespace>.<icon> "Label" as <alias>
mxgraph.<namespace>.<icon> "Label" as <alias> #color
mxgraph.<namespace>.<icon> <alias>

Common Network Stencil Families

Connection Types

Quick Example

@startuml
mxgraph.networks.cloud "Internet" as inet
mxgraph.networks.firewall "Firewall" as fw
mxgraph.networks.router "Router" as rtr
mxgraph.networks.switch "Switch" as sw

rectangle "Office LAN" {
  mxgraph.networks.pc "PC 1" as pc1
  mxgraph.networks.pc "PC 2" as pc2
  mxgraph.networks.server "Server" as srv
}

inet -- fw
fw -- rtr
rtr -- sw
sw -- pc1
sw -- pc2
sw -- srv
@enduml

Network Diagram Types