markdown-viewer__skills/network/examples/lan-topology.md

LAN Topology Diagram

Shows a typical local area network with workstations, server, firewall, and Internet connection.

Key Elements

Component	Stencil
PC	mxgraph.networks.pc
Laptop	mxgraph.networks.laptop
Switch	mxgraph.networks.switch
Wireless Hub	mxgraph.networks.wireless_hub
Server	mxgraph.networks.server
Printer	mxgraph.networks.printer
Firewall	mxgraph.networks.firewall
Cloud	mxgraph.networks.cloud
Mobile	mxgraph.networks.mobile

Connection Types

Syntax	Description
A -- B	Wired Ethernet link
A .. B	Wireless WiFi link

Example

Small office LAN with wired and wireless segments:

@startuml
mxgraph.networks.cloud "Internet" as inet
mxgraph.networks.firewall "Firewall" as fw
mxgraph.networks.switch "Core Switch" as sw_core

rectangle "Wired Segment" {
  mxgraph.networks.switch "Switch" as sw1
  mxgraph.networks.pc "PC 1" as pc1
  mxgraph.networks.pc "PC 2" as pc2
  mxgraph.networks.pc "PC 3" as pc3
  mxgraph.networks.server "Server" as srv
  mxgraph.networks.printer "Printer" as prn
}

rectangle "Wireless Segment" {
  mxgraph.networks.wireless_hub "AP" as ap
  mxgraph.networks.laptop "Laptop 1" as lap1
  mxgraph.networks.laptop "Laptop 2" as lap2
  mxgraph.networks.mobile "Mobile 1" as mob1
  mxgraph.networks.mobile "Mobile 2" as mob2
}

inet -- fw
fw -- sw_core
sw_core -- sw1
sw_core -- ap
sw1 -- pc1
sw1 -- pc2
sw1 -- pc3
sw1 -- srv
sw1 -- prn
ap .. lap1
ap .. lap2
ap .. mob1
ap .. mob2
@enduml

Pattern Notes

1. mxgraph.networks.* stencil family — all LAN diagrams use this library for unified device icons
2. Zone containers use rectangle "Zone Name" { ... } to group devices into network segments
3. Wired connections use -- (solid line, no arrow) for bidirectional Ethernet links
4. Wireless connections use .. (dashed line) to visually distinguish WiFi links from wired connections
5. Two-segment topology: Core switch splits into wired segment (switch → PCs/server/printer) and wireless segment (AP → laptops/mobiles), each inside its own zone container
6. Firewall placement: Single firewall between Internet cloud and core switch — the standard small office pattern
7. No arrows: All physical network links are bidirectional (-- not -->)

Related Icons

Icon	Stencil	Use When
Router	mxgraph.networks.router	Gateway device
NAS Filer	mxgraph.networks.nas_filer	Network attached storage
Hub	mxgraph.networks.hub	Legacy hub device
Tablet	mxgraph.networks.tablet	Wireless tablet client
Monitor	mxgraph.networks.monitor	Workstation display
Security Camera	mxgraph.networks.security_camera	IP surveillance camera