Logical Network Segmenter
Design port assignments and 802.1Q trunk tagging for enterprise-grade managed switches.
Port #1 Configuration
Configured Segments
What does the VLAN & Trunk Designer do?
This tool helps visualize logical segmentation on switches. It explains access ports, trunk ports, VLAN IDs, and 802.1Q tagging so you can plan how traffic should move between users, servers, wireless networks, and network devices.
Why VLAN planning matters
VLANs separate broadcast domains and support security boundaries. Good VLAN design can isolate guests, voice devices, cameras, management interfaces, production servers, and user networks while still allowing controlled routing between them.
Who benefits from it?
Network engineers, sysadmins, MSPs, students, campus IT teams, and small business administrators can use it to reason about switch port roles before touching production equipment.
FAQ
What is an access port? An access port carries traffic for one untagged VLAN, usually to an end device.
What is a trunk port? A trunk port carries multiple VLANs between switches, routers, firewalls, or virtualization hosts.
What is 802.1Q? 802.1Q is the common Ethernet tagging standard used to identify VLAN membership on trunk links.