This report provides a detailed analysis of the IT infrastructure network design for AusEd, an educational institution with approximately 2000 students and 100 staff members. The project focuses on designing a flexible, resilient, and manageable network to support various applications, including an accounting system using MYOB software, customer relationship management with Sugar CRM, and email services via MS Exchange Server 2007. The report outlines the purpose and scope of the project, emphasizing the need for a scalable network design that can accommodate future growth and ensure easy troubleshooting. It details the equipment used, including fiber cables, scalable switches, routers, wireless access points, servers (DHCP, mail, file, and DNS), access devices, and security devices (firewalls and VPNs). The report uses a three-layered hierarchical network model to illustrate the network design, including core, distribution, and access layers. It also provides a cost analysis of the hardware and justifies the selection of Cisco switches and routers due to their reliability, manageability, scalability, and interoperability. The report concludes by emphasizing the importance of a well-designed network for AusEd's sustainable economic growth and smooth implementation across all its branches.