Network Diagram

About

A Network Diagram represents the architecture and communication flow between different network components such as servers, clients, routers, firewalls, and databases. It is widely used for network infrastructure planning, cloud architecture, and distributed systems.

Refer to the official documentation for more details - https://plantuml.com/nwdiag

Key Elements

• Nodes (Devices & Components)

  • Represented as rectangles or labeled icons.

  • Examples: Client, Web Server, Database, Load Balancer.

• Connections (Communication Links)

  • Represented as solid or dashed lines.

  • Can indicate protocols (e.g., HTTP, TCP/IP).

• Firewalls & Security Layers

  • Represented as a shield or labeled box.

  • Shows network security boundaries.

• Cloud Services & External Systems

  • Used to represent external APIs, cloud storage, or third-party integrations.

• Clusters & Zones

  • Represent subnets, VLANs, data centers, or availability zones.

1. Sample Network Diagram

@startuml
nwdiag {
  // Group outside of network definitions
  group {
    color = "#FFFAAA";

    web01;
    web02;
    db01;
  }

  network external {
    web01;
    web02;
  }
  network internal {
    web01;
    web02;
    db01;
    db02;
  }
}
@enduml