Network Design is one of the most critical processes in building network structure in networking. A good network design involves providing better security, prevention against network congestions, easy scalability of the network and providing performance in terms of speed, without compromising connectivity between the devices. As the need of connectivity between the devices is tremendously increasing day by day the network are also becoming larger in size and complex in understanding. In order to satisfy all the need for a good network design as well as building a network simple to administer, we established connectivity, and improved scalability and security by means of Virtual Local Area creation and maintaining the connectivity between different VLAN’s using Inter-VLAN Routing technologies. However by using these we are able to create logical segmentation of the network and form separate networks and add constraints between these network to allow communication with some specific networks making the administration and scalability of the network to be performed with more ease. In this paper we discuss about Flat networks and necessity of VLAN’s, and provide with a brief overview of VLAN’s and Inter-VLAN Routing for improving the connectivity and solving security and scalability issues within the network and how using VLAN’s improves the network performance and throughput of the network .
