Dutch-Bangla Bank Limited Enhances Performance and Access to Its Banking Services with F5 Solutions

Dutch-Bangla Bank Limited logo


Empowered the network to load balance and offload incoming traffic

Ensured near perfect application uptime

Allowed for seamless Cisco ACI integration


Load balance incoming traffic

Improve application availability and uptime

Integrate with application-centric infrastructure

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The Dutch-Bangla Bank Limited, Bangladesh's first joint-venture bank, was exploring ways to ensure peak performance and availability of their Core Banking, Mobile Banking, Agent Banking,  Switching and Internet banking applications across three data centers. Leveraging a high-performance F5 solution, the bank managed to reduce system downtime and vastly improve end user experience.

Business Challenges

The Dutch-Bangla Bank Limited (DBBL), a scheduled joint-venture commercial bank in Bangladesh, has the unique distinction of being the first fully automated bank in the country. Since 2002, the Information Technology division of the bank has undertaken rapid automation to provide modern banking services to its customers. Today, DBBL has a vast network of over 170 Branches, 4,100 ATMs, 10000 POS and 20 millions customers across Bangladesh, making it the largest in the country.

To drive further growth, DBBL wanted to improve the performance of its Core Banking System (CBS), Mobile Banking System (MBS), Agent Banking System (ABS), Switching and Internet banking solutions. The bank built three  data centers in an active/active/standby mode to ensure the highest quality of service for its customers through highly secure 24/7 access to digital banking services.

At DBBL, customer satisfaction is a key driving force. The bank is always looking at ways to improve services and make transactions easier and accessible for its customers. “The active utilization of our ATMs for all banking activities generates a high volume of incoming traffic. There was a need for effective management of this traffic through balancing and diversion of requests into the servers. Given the sensitive nature of these interactions, there was a need to implement a reliable solution that ensures high bandwidth and continuous availability to speed up processes and deliver applications to our users quickly and effectively,” said Mr. Sk. Shakil, Ahmed, Head of the bank’s IT security division and Senior Assistant Vice President.


F5 enabled us to boost our systems by delivering the speed, availability, and security essential for internet banking services.


DBBL opted for F5 BIG-IP Local Traffic Manager (LTM) and BIG-IP DNS to leverage the modules’ load balancing features. The failover process between three data centers was automated for the bank’s CBS, MBS, ABS, Switching and Internet-facing applications. The bank also deployed BIG-IP Link Controller to load balance data traffic across demilitarized zones of the data centers.F5 technology was integrated with Cisco Application Centric Infrastructure (ACI) to streamline the IT environment and create a centralized policy control. 

The solution improved the capacity of DBBL’s servers and optimized SSL traffic management to efficiently address incoming queries and respond to them from all the Banking Systems. The bank could now guarantee service stability and ensure a high-quality user experience.

F5’s professionalism and quick turnaround enabled us to integrate the new setup almost seamlessly! We are now online more than ever before, and our customers are delighted!


With the appropriate routing of all incoming traffic, DBBL can efficiently respond to customer queries and ensure greater reliability, performance, availability, and security for all its digital banking services.

No revenue loss due to application outage

BIG-IP LTM and BIG-IP DNS diverted the incoming traffic between the bank’s data centers, and balanced the load of the incoming traffic. This reduced the load on the servers and prevented application outages. By doing so, DBBL was able to reduce costs of maintenance and avoid revenue loss. In addition, data center consolidation and technology standardization with F5 and Cisco also lead to cost savings. The power and throughput of the F5/ACI solution now means fewer data centers can handle more computational work.

“Application downtime was a serious concern for us, since in the banking sector it can lead to significant business loss as well as reputation loss. By eliminating app outages, we were able to prevent any downtime and consequently avoided any adverse impact to the business,” explained Mr. Shakil.

Improved end user experience

F5 solutions reduced the load on the servers and helped the bank manage user traffic intelligently. Since F5 and ACI technologies are standardized, centric applications are now possible, leading to efficiencies in IT operations. By leveraging the BIG-IP platform’s load balancing capabilities, DBBL was able to redirect inbound traffic, leading to an overall improvement in the speed of transactions. The bank’s employees now enjoy faster page load times and the customers enjoying seamless Internet banking experience.

“Customers appreciate a quality experience and availability. We are now able to respond to queries faster and ensure smoother transactions. Also, we are now confident that we can deliver continuous availability of our services to our customers,” said Mr. Shakil.

Near perfect application uptime

The F5/ACI fabric combination provides the bank’s customers with reliable service. As its data centers intelligently manage traffic with transparent application turnover, the bank’s employee as well as the customers can have anytime, anywhere access to financial services, which ultimately helps boost the end user experience.

Mr. Shakil said, “With near perfect application uptime, we are able to deliver on our customers’ needs across a wide spectrum of touchpoints and timeframes without loss of service quality. This ability is immensely important to us and highly beneficial to our business.”