Case Study: Large Asian Bank achieves 50%+ annual cost reduction and secure, redundant branch network with Nucleus Software

Branch Network Re-design for a Large Asian Bank

Large Asian Bank — a Japanese retail bank serving more than 2 million customers through 30+ branches, 24x7 phone banking and a nationwide ATM network — faced a rigid, high‑cost WAN architecture: dedicated links to two data centers with unencrypted traffic, insufficient ADSL backups and low utilization that caused productivity loss. Nucleus Software was engaged to redesign the branch network, using capacity planning, link aggregation and security/QoS improvements to meet uptime, redundancy and cost objectives.

Nucleus Software aggregated multiple low‑cost consumer ISP links on a link‑aggregation device supporting Layer‑3 encryption and QoS, fine‑tuned load balancing, and validated peak performance and failover at device, ISP and site levels. The deployment delivered encrypted traffic, optimized primary and backup utilization, scalable redundancy and improved voice/video performance — and cut annual recurring network costs by more than 50%, supporting the bank’s goal of near‑100% uptime.