Network Equipment TCO: Calculate the True Cost

Network Equipment TCO: Calculate the True Cost of Your Infrastructure

April 15, 2026·2 min read·304 words

Calculating network TCO (Total Cost of Ownership) over 3-5 years is essential for IT departments. The purchase price accounts for only 30-40% of the total cost. This guide provides a complete TCO methodology covering CAPEX, OPEX, overlooked and hidden costs, and vendor comparisons.

TCO Components

CAPEX (Capital Expenditure)

Hardware: switches, routers, firewalls, and WiFi APs
Initial licenses (Network Essentials/Advantage, DNA)
Installation and deployment services
Team training

OPEX (Operating Expenditure)

Support / SmartNet / FortiCare: 12-20% of the pre-tax price/year
License renewals (often 75-100% of the initial price every 3 years)
Energy (electricity for PoE switches = €1,100/year per 48-port switch)
Staff: internal IT team (% of time spent on networking)
Outsourcing / MSP
Data center hosting (for colocation)
Internet connectivity (FTTH, MPLS)

Hidden Costs

Downtime: 1h = €5-15k for an SMB, €100k+ for a large enterprise
Ongoing team training
Migrations at EoL
Unplanned scaling
Ad hoc consulting

3-Year TCO Example for an SMB with 100 Users

Hardware (FortiGate + switches + APs): €25,000
3-year licenses: €10,000
SmartNet/FortiCare: €6,000
Initial deployment: €8,000
3-year FTTH service: €5,400
3-year electricity costs: €5,000
MSP support: €18,000
Training: €3,000
Total 3-year TCO: €80,400 (for €25k of hardware!)

Cisco vs FortiGate TCO Comparison

Cisco: premium hardware, expensive DNA licenses, and a 3-year TCO 30% higher than an equivalent FortiGate solution
FortiGate: all-in-one Security Fabric, lower cost, and a more favorable TCO
Meraki: simple cloud management, with a TCO comparable to Cisco due to recurring licenses

TCO Optimization Levers

OPTINOC refurbished equipment: 40-70% savings on hardware + new licenses
Multi-service consolidation (FortiGate = FW + managed APs + switches)
SD-WAN vs MPLS: 40-70% savings
5-year vs 3-year refresh cycles (if there is no critical EoL issue)
Vendor negotiation: potential savings of 20-40% for volume purchases

Order from OPTINOC

Customized comparative TCO analysis. CAPEX/OPEX-optimized solutions. Refurbished + new equipment. Quote within 2h.

Frequently Asked Questions

Quels coûts inclure dans le TCO réseau ?

Le TCO inclut le prix d'achat, les licences logicielles, le contrat de support constructeur (SmartNet, FortiCare), l'énergie, le refroidissement, l'espace rack, la formation des équipes, le coût de déploiement et le coût de décommissionnement. Le prix d'achat ne représente que 30-40% du TCO total.

Quelle est la durée de vie typique d'un switch réseau ?

La durée de vie technique est de 7-10 ans. La durée de vie support constructeur est de 5-8 ans (End of Support). La durée de vie économique optimale est de 5-7 ans. Au-delà, les coûts de maintenance et le risque d'obsolescence dépassent le coût de remplacement.

Comment comparer le TCO de différents constructeurs ?

Normalisez le TCO sur 5 ans avec les mêmes hypothèses : nombre de ports, débit, fonctionnalités requises, coût de support, consommation énergétique. Le constructeur le moins cher à l'achat n'est pas toujours le moins cher en TCO sur 5 ans.