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ABSTRACT

Nowadays the number of people who are using Internet is dramatically increasing. With no hesitation, it can be said that the Internet is indeed the most popular media of communication prevailing in the present world scenario. But many of the users are nowadays facing the problem of failure in maintaining the connection with the cyber world.

The prime reason for the problem is that in the existing technology of connection with the Internet, a client is connected to a server through a number of nodes which depends on each other to facilitate the flow of information. The problem with the existing technology is that, even if a single intermediate node malfunctions, the whole system collapses. The solution to the problem is RAIN-Reliable Array Of Independent Nodes developed by the California Institute of Technology (Caltech), in collaboration with NASA’s Jet Propulsion Laboratory and the Defense Advanced Research Projects Agency (DARPA).
RAIN technology was able to offer the solution by minimizing the number of nodes in the chain connecting the client and server and also by making the existing nodes more robust and independent of each other. Also RAIN technology provides the novel feature of replacing a faulty node by a healthy one there by avoiding the break in information flow. In effect with the aid of RAIN connection between a client and server can be maintained despite all the existing problems.

INTRODUCTION

The Internet is changing the way that people manage and access information. In the last five years, the amount of traffic on the Internet has been growing at an exponential rate. The World Wide Web has evolved from a hobbyists’ toy to become one of the dominating media of our society. Ecommerce has grown past adolescence and multimedia content has come of age. Communication, computation and storage are converging to reshape the lives of everyone. Looking forward, this growth will continue for some time. The question is: what can we do to scale the Internet infrastructure to meet this growth?.

There are four trends in the current growth of the Internet:
1. Internet clients are becoming more numerous and varied. In addition to the ever-increasing number of PCs in offices and homes, there are new types of clients, such as mobile data units, (cell phones, PDAs, etc.) and home Internet appliances (set-top boxes, game consoles, etc.) In the next five years, these new types of Internet devices will pervade the Internet landscape.
2. To support these new clients, new types of networks are being designed and implemented. Examples are wireless data networks, broadband networks and voice-over-IP networks. Technologies are being developed to connect these new networks with the existing Internet backbone.
3. The content delivered over the Internet is evolving, partly because of the emergence of the new clients and new networks. There will be a growing presence of multimedia content, such as video, voice, music and gaming streams. The growth in content adds not only to the volume of the traffic, but also to the computation complexity in transporting and processing the traffic, thus accelerating the convergence between communication and computation.
4. New Internet applications emerge, both on the server side and the client side. As the Internet penetrates deeper and deeper into everyone’s life, the demand for security, reliability, convenience and performance sky-rockets. With the popularity of cars comes the invention of traffic lights and stop signs, the gas station and the drive-thru. As Internet makes its way into daily lives, the demand will grow for firewalls and VPNs, intrusion detection and virus scanning, server load balancing and content management, quality of service and billing/reporting applications. The list goes on, and will keep expanding.

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