Abstract: A basic Network infrastructure allude to the resources like hardware and software of an entire network that let network connectivity, communication, operations and control of an enterprise network of a city, industries or home. Enterprise network infrastructure provides the communication path and services between users, processes, applications, services and external networks. The main objective of this research paper is to design a hierarchal enterprise network design of a city with consideration network enterprise edge. Cisco packet Tracer latest version was used to design & simulate this design. Using Cisco packet tracer we can simulate application layer protocols, basic routing with RIP, OSPF and EIGRP. Our design consist three locations in Dhaka, Bangladesh: Data center, Banani Branch & Motijheel Branch.

Keywords: LAN/WAN, OSI Model, Network Switch, Cisco Packet Tracer, Internet Cloud.