Overview

A clean wired backbone with a small multi gig switch serves most small offices well. Keep WiFi for light clients and guests.

Goals and constraints

Define success early.

• Fast file access for key desktops
• Simple remote access without exposing services
• Capacity and growth plan for three years

Topology and switch choices

Select a quiet switch with enough multi gig ports.

• Use a core switch with a few 2.5 GbE ports for NAS and heavy desktops
• Fanless models reduce noise in small rooms
• Avoid daisy chains, home everything at the core

VLANs and segmentation

Segmentation adds safety without complexity.

• Separate staff, NAS, guest, and IOT where possible
• Route between VLANs on the router with explicit rules
• Keep management interfaces reachable from admin VLAN only

Cabling and WiFi planning

Good cables and access points prevent slowdowns.

• Use Cat5e or better; prefer short runs and tidy labels
• Place access points centrally and wire them back to the core
• Avoid powerline for critical links

Internet and router settings

The router sets policy and VPN access.

• Enable a VPN for remote access to NAS and desktops
• Reserve static leases for NAS and servers
• Keep DNS and time servers reliable

QoS and prioritisation

Only shape traffic when you must.

• Prioritise VPN and critical backup windows if links are congested
• Avoid over tuning when links are already fast
• Monitor utilisation before and after changes

Redundancy and power

Basic resilience reduces incidents.

• Add a UPS for the NAS, router, and core switch
• Keep spare cables and a cold spare drive on hand
• Document failover plans for internet outages

Deployment steps

Roll out in stages and validate at each step.

• Rack and cable the core gear and label ports
• Connect the NAS and verify link speed
• Add desktops and test file copies and permissions
• Enable VPN and verify remote access to shares

Troubleshooting checklist

If users see slowdowns, start here.

• Swap cables and try different switch ports
• Check link speeds and duplex on both ends
• Test a direct link to isolate the switch

FAQs

Short answers for common design questions.

• Do we need 10 GbE - upgrade when workloads and budget align
• Is WiFi 6 enough - fine for light devices, wire heavy users
• Can we run two NAS units - yes for replication and growth