IT & InfrastructureBeginner 2 to 3 hours

Subnet and VLAN Plan for an SME

Design a clean IP scheme and VLAN layout for a 30-person office.

The Scenario

A 30-person SA accounting firm is moving offices and the new landlord has installed a flat /24 network. Your IT contractor needs a clean subnet and VLAN plan that separates staff devices, the partner laptops, the guest Wi-Fi, voice handsets, and the print and finance servers.

The Brief

Produce a complete IP and VLAN design for the new office. The plan must be implementable by a junior technician with the existing /24 split into appropriately sized subnets and VLANs.

Deliverables

  • A VLAN table listing each VLAN ID, name, purpose, IP subnet, gateway, DHCP range, and inter-VLAN routing rules
  • A short rationale paragraph explaining how you sized each subnet and which VLANs you deliberately kept isolated from each other
  • A guest Wi-Fi statement covering captive portal, bandwidth limits, and isolation from internal traffic
  • A handover note listing three things a technician should verify after rolling the design out

Submission Guidance

Real corporate IT does not put VoIP, printers, and finance servers on the same broadcast domain. Show that you understand why segmentation matters, not just how to do CIDR maths.

Submit Your Work

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