All network tools

VLAN and address planning

VLAN planner

Describe the networks you need. The planner allocates right-sized subnets from the largest requirement down and keeps the remaining address space visible.

Local only

Your plan stays here. VLAN names and network details remain in this browser unless you choose to export the CSV.

Initializing the local planner. If this message remains, reload the page.

Available address space

Parent network

Segmentation requirements

Networks to allocate

Host counts exclude the network, broadcast, and gateway addresses. Up to 64 VLANs can be planned at once.

NETWORK VISIBILITY / NEMESIS

Take the plan into your network.

Nemesis discovers devices, preserves topology evidence, and watches the infrastructure you choose—without requiring a cloud control plane.

Explore Nemesis