Network diagrams templates
Physical and logical network topologies. Every one opens as a real, editable diagram — restyle it, extend it and export it as your own. See also the system architecture diagram tool.
All 14 network diagrams templates
Small office LAN
Router, switch and endpoint devices.
MermaidHub-and-spoke WAN topology
Branch offices connecting through a central hub.
MermaidLoad-balanced web tier
A balancer distributing across redundant web nodes.
MermaidSite-to-site VPN
Two office networks joined over an encrypted tunnel.
MermaidDMZ network topology
Public-facing services isolated from the internal network.
MermaidCDN edge topology
Requests served from the nearest edge before hitting origin.
MermaidCampus network: core, distribution & access
A classic three-tier enterprise campus with redundant core switches, distribution blocks per building, access switches, wireless and a firewall edge — for network engineers.
MermaidData centre spine-leaf fabric
A two-tier spine-leaf data centre fabric with border leaves, server leaf pairs, storage and an EVPN-VXLAN overlay — for data centre and cloud network architects.
MermaidSD-WAN branch network
A branch office on SD-WAN with dual internet and LTE underlays, a central orchestrator, regional hubs and direct cloud breakout for SaaS — for WAN engineers.
MermaidHome network with mesh Wi-Fi & IoT VLAN
A home network with fibre router, a mesh Wi-Fi system and separate VLANs for trusted devices, IoT gadgets and guests behind a firewall — for home-lab enthusiasts.
MermaidZero-trust network access (ZTNA)
How ZTNA replaces VPN: identity provider, device posture, policy engine and app connectors broker per-application access with no inbound firewall ports — for security architects.
MermaidKubernetes cluster networking
Traffic paths inside a Kubernetes cluster: cloud load balancer, ingress controller, Services, kube-proxy, CNI pod network, CoreDNS and network policies — for platform engineers.
MermaidDNS resolution path
What happens when a browser resolves a domain name: local caches, recursive resolver, root, TLD and authoritative servers, plus DNSSEC and CDN steering — for developers and students.
MermaidMulti-site MPLS with internet backup
Head office, data centre and branches linked by a carrier MPLS VPN, with IPsec over internet as automatic failover using BGP and tracked routes — for enterprise WAN teams.
Mermaid