“Paying $3,000/month for a 10Mbps legacy MPLS link is unsustainable. SD-WAN overlays aggregate dual commodity broadband links into a 200Mbps encrypted fabric with sub-second failover.”

As Lead Consultant for enterprise clients at Wipro, legacy branch WAN architectures were throttled by expensive, low-bandwidth MPLS circuits that struggled under cloud SaaS traffic demands.

Architecture: Zero-Touch SD-WAN Overlay

We architected an enterprise SD-WAN Overlay deploying Cisco Viptela vEdge appliances and Velacloud orchestration across 50 remote offices.

• Dual Transport Fabrics: Aggregated 1x Primary Business Broadband + 1x Secondary 4G/LTE link under a unified IPsec OMP (Overlay Management Protocol) control plane.
• Application-Aware Routing (AAR): Real-time jitter and packet loss monitoring dynamically steered latency-sensitive VoIP traffic over broadband while backing up transactional traffic over LTE.

[!IMPORTANT] Always configure BFD probes across both SD-WAN transport color tunnels (biz-internet and lte) to trigger sub-second traffic steering when latency exceeds 150ms.

# # Cisco Viptela vEdge OMP & Application-Aware Routing Policy
policy
 app-route-policy AAR-VOIP-POLICY
  vpn-list CORPORATE-VPNS
  sequence 10
   match
    app-list VOIP-APPS
   action
    sla-class VOIP-SLA preferred-color biz-internet fallback-to-lte
!
 vpn 10
  name CORPORATE-DATA
  interface ge0/1
   ip address 10.50.1.1/24
   no shutdown

The Verdict

Key Takeaway

Replace Static MPLS Circuits with Application-Aware SD-WAN Overlays.

Deploying Cisco Viptela SD-WAN increases branch bandwidth by 20x while reducing WAN operational spend by 70%.