Wide Area Network — Reliable, Low-Latency Connectivity Across Sites, Clouds & Users
A WAN (Wide Area Network) links your branches, campuses, data centers, and clouds into one reliable fabric.
SolveForce designs WANs that are application-aware, secure-by-default, and evidence-rich—combining SD-WAN, MPLS/VPLS, Lit/Wavelength/Dark Fiber, fixed/mobile/satellite underlays, and cloud on-ramps with clear SLOs.
Related pillars:
🔀 SD-WAN → /sd-wan • 🛡️ SASE / ZTNA → /sase / /ztna • 🧭 BGP → /bgp-management
🧵 Underlays → Fiber /fiber-internet • MPLS /mpls • VPLS /vpls • Wavelength /wavelength • Dark Fiber /dark-fiber • Lit Fiber /lit-fiber • Fixed Wireless /fixed-wireless • LTE/5G /mobile-connectivity • Satellite /satellite-internet
☁️ On-Ramps → /direct-connect • 🖧 Fabric → /networks-and-data-centers • 🌐 Catalog → /connectivity
🎯 Outcomes (Why SolveForce WAN)
- Deterministic performance— per-app SLOs for loss/latency/jitter; failover measured in seconds.
- Resilience by design— dual underlays (fiber + wireless/satellite), diverse POPs/paths, and rapid brownout steering.
- Cloud-ready— private on-ramps (Direct Connect/ExpressRoute/Interconnect) with policy-based routing. → /direct-connect
- Security built-in— SASE/Zero Trust for users, encryption (IPsec/MACsec/L1) for links, and microsegmentation for east-west. → /sase • /microsegmentation
- Audit-grade evidence— turn-up baselines, SLO dashboards, and carrier tickets exported to SIEM/SOAR. → /siem-soar
🧭 Scope (What We Build & Operate)
- Topologies— hub-and-spoke, partial/full mesh, regional hubs, cloud-edge, and Anycast front doors.
- Overlays— SD-WAN for app-aware routing, brownout detection, packet duplication/FEC. → /sd-wan
- Underlays— DIA fiber, MPLS/VPLS, Wavelength/Lit/Dark Fiber, fixed wireless, LTE/5G, satellite.
- Cloud WAN— on-ramps, Private Link/Endpoints, policy routing to VPC/VNet workloads.
- Routing— BGP for multi-homing, policy & communities; OSPF/IS-IS internally. → /bgp-management
- Encryption— L3 IPsec, L2 MACsec, optional L1 encryption on waves. → /encryption
🧱 Building Blocks (Spelled Out)
- Class-based SLOs(per app): EF/AF/BE mapping, loss/latency/jitter thresholds, brownout vs blackout behavior.
- Path diversityseparate laterals, conduits, bridges, and POPs; request diversity letters.
- QoSEF for voice/telemetry; AF for interactive; shape/back-pressure for bulk.
- DNS & Anycastnearest healthy entry points; health-based withdraw at the edge.
- SecuritySASE SWG/CASB/FWaaS/ZTNA for user traffic; microsegmentation for workloads; WAF/Bot for web. → /waf
🔁 WAN Topology Patterns (Choose Your Fit)
1) Dual-Path Branch (Gold Standard)
Fiber DIA + LTE/5G (or Fixed Wireless) underlays; SD-WAN steers per-app by SLOs; tertiary Satellite for remote sites.
→ /fiber-internet • /mobile-connectivity • /fixed-wireless • /satellite-internet
2) Hybrid WAN (MPLS + Internet)
3) DCI / High-Throughput Inter-Site
Use Wavelength (L1) or Lit Fiber (EPL) for predictable latency and jumbo frames; encrypt with L1/MACsec if needed.
→ /wavelength • /lit-fiber
4) Cloud-First
Regional hubs at carrier-dense colos; private on-ramps; SD-WAN breaks out near cloud regions; ZTNA for private apps.
→ /colocation • /direct-connect • /ztna
5) Regulatory/Policy Networks
Deterministic controls mapped to HIPAA/PCI/FedRAMP/NIST; segmentation + immutable logs; measured failover.
→ /cybersecurity
📐 SLO Guardrails (Targets You Can Measure)
| Class | Typical Transports | One-Way Latency | Jitter Target | Packet Loss (sustained) | Availability* |
|---|---|---|---|---|---|
| A | Metro fiber / wavelength | ≤ 2–5 ms | ≤ 15% of latency | < 0.1% | 99.99% (core/DC) |
| B | Regional DIA / MPLS | 15–35 ms | ≤ 15% | < 0.1% | 99.95% |
| C | Continental/global DIA (+ CDN/Anycast assist) | 80–120 ms | ≤ 15% | < 0.1% | 99.9% |
| D | LEO/GEO satellite / remote | variable | engineered per path | engineered | 99.5–99.9% |
*Availability depends on path diversity/protection. SD-WAN masks brownouts by shifting flows before outages.
🔒 Security & Zero-Trust (Concrete, Enforceable)
- User access: ZTNA per app/session with posture; SWG/CASB/FWaaS at SASE POPs; no flat VPNs. → /sase • /ztna
- Site-to-site: IPsec (Ikev2, PFS) or MACsec/L1 where policy requires; vault-managed keys. → /secrets-management
- East-west: Microsegmentation to contain lateral movement; identity-aware policies. → /microsegmentation
- Boundary: WAF/Bot for web/API; DDoS protections and Anycast withdraw options. → /waf • /ddos
📊 Observability & NOC
- Metrics: latency/jitter/loss per class, throughput, path health, optical light levels/FEC/BER, RF RSSI/SNR, tunnel states.
- Dashboards & alarms; carrier escalation playbooks; monthly SLO & availability reports.
→ /circuit-monitoring • /noc • /siem-soar
💵 Commercials (What Drives Cost)
- Underlay mix (fiber/MPLS/wireless/satellite), speeds, distance, protection/diversity, on-ramp ports, cross-connects.
- SD-WAN/SASE licensing, headend capacity, monitoring/NOC scope, and change windows.
🛠️ Implementation Blueprint (No-Surprise Rollout)
1) Inventory & SLOs — sites, apps, clouds, regulatory needs; per-app loss/latency/jitter targets.
2) Underlay plan — dual paths per site (fiber + wireless/satellite); request diversity letters.
3) Overlay — SD-WAN policy (per-app SLOs, packet dup/FEC, brownout thresholds).
4) Cloud — regional hubs, private on-ramps, BGP policy; Anycast where useful.
5) Security — SASE/ZTNA for users; IPsec/MACsec/L1 for sites; microsegmentation for workloads.
6) Routing — BGP communities, local-pref/MED; pin golden prefixes; failover drills.
7) Turn-up tests — RFC 2544 / ITU-T Y.1564 baselines; archive evidence to SIEM.
8) Operate — NOC thresholds, SLO dashboards, carrier escalation & monthly reports; quarterly optimization.
✅ Pre-Engagement Checklist
🔄 Where WAN Fits (Recursive View)
1) Grammar — dedicated links & policies in Connectivity.
2) Syntax — composes the fabric in Networks & Data Centers and Cloud.
3) Semantics — Cybersecurity preserves integrity and trust on every path.
4) Pragmatics — SolveForce AI predicts congestion/outages and auto-tunes steering.
5) Foundation — consistent terms via Primacy of Language.
6) Map — indexed in SolveForce Codex & Knowledge Hub.
📞 Build a WAN That’s Fast, Secure & Auditable
Key terms in plain language
Open a term for a concise explanation of language used on this page.
Fiber Internet
Internet delivered through strands of glass using light. Fiber commonly supports high capacity, low latency, and strong upload performance, but availability must be confirmed for the exact address.
Latency
The time it takes data to travel between two points. Lower latency improves voice, video meetings, cloud applications, gaming, and other real-time services.
Dedicated Internet Access (DIA)
A business-grade Internet connection with capacity dedicated to the customer rather than shared in the same way as typical consumer broadband. It often includes symmetrical speeds and an SLA.
SD-WAN
Software-defined wide area networking. It manages multiple connections and chooses paths based on application needs, performance, and policy to improve resilience and control.
MPLS
Multiprotocol Label Switching, a private-network technology that directs traffic along managed paths. Organizations use it for predictable connectivity between locations.
VPN
A virtual private network creates an encrypted connection across another network, commonly allowing remote users or offices to access private resources securely.
Software as a Service (SaaS)
Software accessed as an online service instead of being installed and maintained entirely on the customer’s own computers or servers.
Cybersecurity
The practices and controls used to protect identities, devices, networks, applications, and data from unauthorized access, disruption, or manipulation.