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Fairoz Faisal's Enterprise Network Redesign project - Complete redesign of corporate network infrastructure for improved security, performance, and scalability.

Enterprise Network Redesign

network
Network Design
Cisco
Security
High Availability

Completion Date

December 2022

Duration

6 months

Role

Lead Network Engineer

Project Overview

Led a comprehensive redesign of the corporate network infrastructure for a financial services company with 500+ employees across multiple locations. The project involved replacing legacy networking equipment, implementing a new security architecture, and establishing a robust foundation for future growth.

Challenges

  • Legacy infrastructure with frequent outages and security vulnerabilities
  • Need for minimal disruption during transition
  • Complex compliance requirements for financial data
  • Multiple office locations with different connectivity requirements

Solutions

  • Implemented a hierarchical network design with clear separation between core, distribution, and access layers
  • Deployed redundant Cisco Catalyst 9300 switches with StackWise technology for high availability
  • Established a defense-in-depth security approach with next-generation firewalls and network segmentation
  • Created a phased migration plan with after-hours cutover to minimize business impact

Key Features

  • Redundant 10Gbps fiber connections between core switches
  • Network segmentation with VLANs and ACLs
  • Quality of Service (QoS) for voice and video traffic
  • 802.1X network access control
  • Centralized network management and monitoring
  • SD-WAN implementation for branch offices

Technologies Used

Cisco Catalyst 9300/9500 Switches
Cisco Firepower NGFW
Cisco ISE
Cisco DNA Center
Cisco SD-WAN
802.1X
OSPF/BGP Routing

Outcomes

  • 99.99% network uptime (up from 98.5%)
  • 70% reduction in security incidents
  • 40% improvement in network performance
  • Scalable infrastructure supporting 30% year-over-year growth
  • Simplified network management and troubleshooting

"The network redesign has transformed our infrastructure from a liability to a competitive advantage. We've seen dramatic improvements in reliability, security, and performance."

Sarah Johnson

CIO, Financial Services Inc.

Fairoz Faisal's Enterprise Network Redesign project - Network topology diagram showing the new hierarchical design
Network topology diagram showing the new hierarchical design
Fairoz Faisal's Enterprise Network Redesign project - New network equipment rack implementation
New network equipment rack implementation
Fairoz Faisal's Enterprise Network Redesign project - Custom network monitoring dashboard
Custom network monitoring dashboard
Fairoz Faisal's Enterprise Network Redesign project - Network segmentation and security zones
Network segmentation and security zones
Cloud Migration Strategy
Cloud Migration Strategy

Strategic migration of on-premises infrastructure to a hybrid cloud environment using Azure and AWS.

Network Automation Platform
Network Automation Platform

Custom network automation platform for streamlining configuration management, compliance, and troubleshooting.

SD-WAN Implementation
SD-WAN Implementation

Software-defined wide area network deployment for 50+ branch locations with improved performance and reduced costs.