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VLSM · Network design

VLAN & subnet planner.

Describe your VLANs and host requirements, then build a right-sized addressing plan without overlaps.

The planner allocates largest requirements first using Variable Length Subnet Masking.

Requirements

VLANs to allocate

Addressing plan

10.20.0.0/20

VLANNameSubnetMaskUsable rangeCapacity