A F M Bakabillah

Technical Brief: Orchestrated the comprehensive infrastructure discovery, structural design, and consultation for the Data Center (DC) Channel Network of The Bank in Poland. Engineered a multi-tier, highly redundant, enterprise-grade architecture implementing High Availability (HA), Intelligent Resilient Framework (IRF) fabric virtualization, hardware load balancing, and strict VLAN isolation across core, distribution, and edge layers.

Device Configuration Brief & Inventory:

• Edge Routers: Dual HPE MSR 3026 Routers linked via 10G SFP+ for WAN edge routing.
• L2 Access/Aggregation Switches: Dual HPE 5520 24G Switches providing cross-connected 10G uplink redundancy.
• Perimeter Firewalls: High-Availability pair of Fortinet FortiGate 200F Firewalls configured with dedicated HA heartbeats.
• L3 Distribution Switches: Dual HPE 5710 24SFP+ Core Switches executing high-throughput multi-VLAN routing.
• Hardware Load Balancers: Dual F5 BIG-IP r4600 L4 ADC Appliance Nodes managing application traffic distribution via ports 7.0 & 8.0.
• Backbone IRF Core Fabric: HPE 5945 High-Density Core Switches deployed in an IRF Virtual Stack over 10G SFP+ links.
• QA & Server Compute Layer: Dedicated HPE 5520 24G QA Switch interconnecting QA and production server infrastructure.

• VLAN Subnet Segmentation: logically divides a single physical network into isolated sections to improve security, reduce network traffic congestion, and simplify management without additional hardware..
• Routing & Path Engineering: Engineered dual-tier routing using Default Routing toward external networks/firewalls and Static Routing traversing L3/L4 ADC load balancers into the IRF backbone.
• Physical Interconnect Standard: High-bandwidth 10G SFP+ multi-mode fiber links across core/firewall layers paired with 10G/1G RJ-45 redundant uplinks across server farm layers.

Sample Diagram

• Designed and deployed an enterprise-grade campus network infrastructure supporting 270+ active endpoints with high-uptime internet connectivity.
• Configured Allied Telesis Enterprise Firewalls/Routers for advanced perimeter security, dual-stack routing, and stateful threat inspection.
• Engineered high-speed core interconnections utilizing Allied Telesis SFP Fiber Switches and managed Ethernet switches.
• Architected and implemented 7 distinct IEEE 802.1Q VLANs to isolate academic labs, faculty workspaces, servers, admin, and guest networks, optimizing broadcast traffic and security ACLs.

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• Re-architected multi-tier web platforms on AWS to achieve high availability, fault tolerance, and automated load scaling.
• Implemented strict FinOps cost-optimization strategies, drastically reducing infrastructure operational expenses.

• Drive corporate vision, technology roadmaps, and business operations delivering bespoke IT infrastructure, enterprise cloud blueprints, and cybersecurity solutions.
• Architected and executed high-availability, cost-optimized AWS migration strategies for major web properties including believers.com.bd.
• Consult and deliver high-tier security assessments, business continuity plans, and comprehensive system architecture optimizations for enterprise clientele.

• Direct curriculum development, specialized training delivery, and infrastructure roadmaps for advanced technical scholarship tracks.
• Train the next generation of systems administrators and network engineers in Linux/Windows administration, core enterprise services, and network defense strategies.
• Formulate comprehensive scholarship assessment strategies, system architecture blueprints, and remote laboratory environments for continuous skill evaluation.

• Designed, deployed, and maintained enterprise-scale Windows Server domains and Linux servers hosting business-critical line-of-business applications.
• Implemented cross-platform file storage facilities utilizing SAMBA, enterprise-grade DNS infrastructure using BIND, and secured mail exchange environments.
• Managed data center hardware, localized network topologies, automated server backup configurations, and executed system patch policies.

Advanced postgraduate study focused on statistical analysis and quantitative research methodologies.