Hybrid Network Architecture for Outsourced Data Centre Backup

Project Overview

This project focuses on the design and implementation of a hybrid network architecture to support outsourced data center backup operations. The network ensures secure communication, high availability, and optimized performance through QoS and segmentation policies.

The proposed design integrates:

• Backup Server – Deployed within the organization’s on-premises data center to manage backup operations.
• Storage Devices – Network Attached Storage (NAS) or SAN-based storage systems for local backup storage.
• Network Infrastructure – High-bandwidth, segmented network with QoS for prioritizing backup traffic.

Project Scope

The network is designed to guarantee the security, integrity, and reliability of communication between:

• On-Premises Data Center (Core Server, Monitoring Server, Backup Server)
• Two Remote Sites – Connected via serial links with high availability enabled between them.
• Cloud Data Center – Integrated using secure VPN GRE tunnels.
• OSPF Routing – For dynamic, efficient path selection.
• ACL Security – To filter and protect network traffic.
• QoS – To optimize bandwidth usage and prioritize critical backup traffic.

Objectives

• Develop a comprehensive hybrid architecture aligned with organizational security requirements.
• Clearly define the number and roles of routers and switches in the design.
• Assess the existing network infrastructure for compatibility and connectivity.
• Identify vulnerabilities and potential security weaknesses.
• Enable real-time monitoring and logging for proactive threat detection.
• Provide comprehensive documentation and training for IT staff.

Requirements Delivered

• Topology Diagram (Visio-based, professional format)
• Test Cases ensuring reliable communication
• Configuration Commands for:
  • OSPF Routing
  • VPN GRE setup
  • ACLs for access control
  • QoS for traffic optimization
• Security gap analysis and integration with existing infrastructure

Tools & Technologies

• Cisco Packet Tracer (Latest Version)
• Microsoft Visio (Topology Design)
• Networking protocols: OSPF, VPN GRE
• Security controls: ACLs, QoS

Outcome

The implemented hybrid network provides:

• Reliable inter-site connectivity with high availability
• Secure cloud integration for outsourced backup services
• Optimized traffic flow for backup operations
• Real-time monitoring capability
• A scalable and secure foundation for future expansions

Topology:

Presentation: