Things to Remember: Cerf and Kahn's Internetworking Principles: Minimalism, autonomy - no internal changes required to interconnect networks Best effor service model Stateless routers Decentralized control GOTO TOP Metcalfe's Original Conception of the Ethernet In addition to the DARPA internetworking efforts and the Aloha/Ethernet multiple -access networks, a number of companies were developing their own proprietary network architectures. Digital Equipment Corporation (Digital) released the first version of the DECnet in 1975, allowing two PDP -ll minicomputers to communicate with each other. DECnet has continued to evolve since then, with significant portions of the OSI protocol suite being based on ideas pioneered in DECnet. Other important players during the s were Xerox (with the XNS architecture) and IBM (with the SNA architecture. Each of these early networking efforts would contribute to the knowledge base that would drive networking in the sands. It is important to note here that in the sand even before, researchers such as Fraser 1983, 1993] and Turner 1986] were also developing a competitor technology to the Internet architecture. These efforts have contributed to the development of the ATM architecture, a connection -oriented approach based on the use of fixed -size packets, known as cells. GOTO TOP
