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The Clean Slate moniker in its proper sense refers to a research program initiated by Nick McKeown from Stanford, but it has since expanded to include a variety of government-led projects such as the Global Environment for Network Innovations (GENI) project, a subproject of the Future Internet Network Design (FIND) initiated by the U.S. This radical solution, known in academia as the “Clean Slate,” represents the abandoning of the original network structure altogether with a new one built from scratch, one that can satisfy current as well as future needs. Many researchers are starting to believe that the problem can be ultimately solved by redefining the network structure, though this a task is on par with replacing a jet engine at 30,000 feet. However, the Internet’s fundamental flaws remain, and no amount of patching can ultimately overcome them. Improvements and innovations have been carried out to address them, including classless inter-domain routing (CIDR), network address translation (NAT), and multiprotocol label switching (MPLS), which, miraculously, have enabled the Internet to stay ahead of obsolescence to this day.
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However, the Internet has inherent flaws in its scalability, security, mobility, and QoS. The TCP/IP-based Internet was destined to succeed due to three factors – connectionless packet switching, best-effort operational principles, and end-to-end transmission all have helped it prevail over traditional circuit-switched architecture at each turning point in its development. Software-defined networking (SDN) is considered the next stage in the evolution of telco architecture, but it is worth noting that it is in fact a splendid example of technological cross-pollination OpenFlow and its protocol brethren came about through recent efforts to remake the Internet for the 21st century, and these technologies will no doubt continue to intertwine for the foreseeable future.īorn in 1969 as a Defense Advanced Research Projects Agency (DARPA) test network, the Internet is now more than 40 years old.