Network Topology Diagram Template

Document your infrastructure — servers, routers, firewalls, and connections. Essential for DevOps, network planning, and incident response.

Use this template

What you get

Server, router, firewall, and client nodes
Connection lines with protocol labels
Grouped zones for subnets and DMZ

What this template is for

A network topology diagram shows the physical or logical layout of a network — routers, switches, firewalls, servers, and the connections between them. This template helps IT teams document existing infrastructure, plan network changes, and communicate architecture to stakeholders. Use standard network symbols to represent each device and draw labeled connections between them.

When to use this template

Document your office or data center network layout for the operations runbook.
Plan a network expansion: adding a new VLAN, segment, or remote office connection.
Create a network diagram for a security audit or compliance review.
Onboard new IT staff by giving them a visual map of the network they will manage.

How to use it

1Identify all network devices: routers, switches, firewalls, access points, servers, endpoints.
2Group devices by location or function — core network, DMZ, office floor, cloud VPC.
3Draw connections between devices with labels indicating link type and bandwidth.
4Mark security boundaries: where does the firewall sit? Which segments are in the DMZ?
5Add IP ranges, VLAN IDs, and device hostnames as annotations.

Quick example

Small office network

Internet → Firewall → Core Switch

Core Switch → Office Switch → Workstations

Core Switch → Server VLAN → File Server, AD Server

Core Switch → WiFi AP → Mobile Devices

How it compares to similar tools

Network Topology vs Cloud Architecture Diagram

A network topology diagram focuses on connectivity — who is connected to whom and how. A cloud architecture diagram focuses on services — which cloud resources are provisioned and how they interact. Use a topology diagram for on-prem and hybrid networks; use a cloud architecture diagram for AWS/Azure/GCP deployments.

Common mistakes to avoid

Mixing physical and logical topology on one diagram
Physical topology shows cable paths and device locations. Logical topology shows data flow and subnet structure. Combining both on one diagram creates confusion. Keep them separate or use color to distinguish layers.
Omitting security boundaries
A network diagram without firewall placement and DMZ markings is incomplete for security reviews. Always show where trust boundaries sit.

Frequently asked questions

What is the difference between physical and logical network topology?+

Physical topology shows the actual cable connections and device placement — which port on which switch connects to which server. Logical topology shows how data flows through the network regardless of physical layout — IP addressing, VLANs, and routing paths.