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Services · Network Architecture & DataCenter / WAN
Network & DataCenter / WAN Architecture for Stability and Growth
We design network, DataCenter and WAN architectures that support business for years: clear core/distribution/access, security by design, connections between offices, DataCenter and cloud, with redundancy and predictable performance.
What type of organizations is this service for?
The architecture makes sense when the network is already critical: disruptions are felt directly in operations, and "on-the-fly" expansions have complicated things.
- Companies with HQ, DataCenter and multiple branches or warehouses.
- Organizations migrating to a new DataCenter or new HQ.
- Businesses that need real DR (not just mentioned in documents).
- Infrastructures with WAN/MPLS/SD-WAN and critical links with partners or institutions.
6-step methodology for network & datacenter architecture
- 1
Context & inventory
We discuss with IT and business, collect existing diagrams (if any), WAN/MPLS contracts, critical application requirements, and growth plans (new locations, new services).
- 2
“As-is” map (current state)
We map the current network: topology, equipment, versions, addressing schemes, routing, security rules, and single-point-of-failure points.
- 3
“To-be” design (target architecture)
We define the target architecture: core/distribution/access, HQ–DC–DR interconnection, WAN/MPLS/SD-WAN, segmentation, security zones and cloud integration (if applicable).
- 4
Addressing & Routing Plan
We establish IP plan, VLANs, VRFs, inter-site routing policies, critical traffic prioritization and how failover is done (manual/automatic, metrics, timers).
- 5
Migration plan in steps
We define migration waves: what changes, when, what impact it has, what tests we do, and what success/rollback means. We start with less critical pieces, then move towards the core.
- 6
Documentation, handover & tuning
We deliver the final documentation, have a handover session with your team, define runbooks for incidents, and review together areas where we can further refine the design.
Layers in a healthy network & datacenter architecture
We look at architecture in layers – from cables and ports, to routing, security, and observability.
| Layer | Focus | Recommended practice |
|---|---|---|
| Physical & wiring | Ports, links, physical redundancy | Redundant links where it matters, clear labeling, separate routes, cabling documentation and patch panels. |
| Switching (L2) | VLANs, STP, access/distribution | Loop-free topology, VLANs per zone, correctly configured STP/RSTP, avoiding "flat network" at the organization level. |
| Routing (L3) | Connectivity between areas and sites | OSPF/BGP where it makes sense, separation per VRF, clear routing policies between internal and DMZ/internet/partner zones. |
| WAN / SD-WAN | Links between headquarters, DC, DR | Design with main links + backup, QoS on critical flows, clear SLAs with operators, permanent monitoring. |
| Security | Segments, firewalls, zones | User–server–DMZ–admin segregation, L7 policies on firewalls, logging and integration with monitoring. |
| Management & observability | Day-to-day operation | Separate management network, controlled administrative access, integrated monitoring (Zabbix/Grafana) and runbooks. |
What we deliver at the end of an architecture project
- L2/L3 diagrams (PDF + editable source) for HQ, DataCenter, DR and WAN.
- Complete IP plan: VLANs, subnets, VRFs, and high-level routing rules.
- Equipment recommendations (if applicable) and their positioning in the topology.
- Step-by-step migration plan, with clearly described windows, tests, and rollback scenarios.
- Runbooks for key incidents and checklists for major changes.
Do you need your network to keep up with your business plans?
Send us your current structure (number of locations, DC/DR, WAN connection type) and your plans for the next 2–3 years. We propose a network & DataCenter architecture that does not limit you, but does not over-dimension the costs either.