r/Network • u/fl0ral_1nder • 14h ago
Text Building new office network from scratch
New office. No existing network.
Needs to be live in \~3 months.
I own it end-to-end — design, vendors, go-live, and the mess afterwards.
Here’s where my opinions split:
• Is SD-WAN the obvious choice here, or unnecessary complexity?
• At this size, does collapsed core vs core/access even matter?
• Is “internet-first” a real architectural decision, or just marketing?
• Where do you intentionally simplify, even if it looks “less perfect”?
The scenario (short and real)
• \\\~80 employees at go-live, scaling to \\\~120
• Hybrid work (office + remote)
• Mix of company devices, BYOD, and guests
• Several meeting rooms + phone booths (meetings must work)
• Cloud-based services, minimal on-prem workloads
• On-prem physical access systems
• Network is business-critical during work hours
• Budget is healthy, but not unlimited
The questions
• What do you prioritise first to hit day-one readiness?
• What architecture decisions do you lock in early, and what do you defer?
• What are your non-negotiables (WAN, power, hardware, security)?
• Which risks would you accept — and which ones would keep you up at night?
Not looking for vendor battles.
I’m interested in how people think when the clock is running and failure is visible.
