Impact of Local Domain Name System (DNS) on Corporate Network Bandwidth

Abstract: The Domain Name System (DNS) is the most crucial component of today‟s Internet. DNS is a service which translates human readable domain names into IP addresses and acts like the telephone directory of internet. Just as a phone number such as 0181-2226715 is mapped into a name in telephone directory, similarly every device on internet is identified by unique id known as IP address and are mapped to human readable names known as host names such as

generally it is the first service used for accessing a web page. Performance enhancement of internet and effective use of bandwidth has been a major concern for researchers in the field of computer networks. In this study concept of having a local DNS in the network is used so that impact of Local DNS on the bandwidth can be studied. In this study, Network Simulator (NS2) is used to analyze the behavior of network when local DNS is used. Two different scenarios are created in the simulation one without local DNS and the other having local DNS. NS2 traces the flow of packets and generates graphs, from which impact of local DNS will be studied.

Keywords: Local DNS, NS, NS2