![]() #Point to point protocol explained serialIn particular, router vendors could not interoperate over serial dial-up or leased lines because no standard for high-speed synchronous communications had yet been defined.3 Hence, internetwork connectivity was difficult and limited. Many of the original proponents of the PPP protocol were router vendors who found that the many existing data link protocols used to envelop transport protocols were proprietary in nature. The original purpose was to allow one uniform, standardized way to encapsulate the IP Protocol for point-to-point communications in a mixed environment of varying vendors and devices. PPP was first proposed as an Internet standard in the early 1990’s by a working group of the Internet Activities Board’s Internet Engineering Task Force (IETF).2Network World April 2, 1990: 2. The protocol aspect lies in the fact that PPP is the intermediate packet structure which facilitates transmission of higher level protocols, such as TCP/IP, across diverse communication links. This definition explains the point-to-point aspect of PPP. A circuit connecting two points without the use of any intermediate terminal or computer.1Technical Aspects of Data Communication (3rd ed. ![]() ![]() The connection may include switching facilities. A network configuration in which a connection is established between two, and only two points.Two precise definitions of “point-to-point” in the context of data communications follow: The Point-to-Point Protocol (PPP) is a data link layer protocol which encapsulates other network layer protocols for transmission on synchronous and asynchronous communication lines. ![]()
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