PPP(Point to Point Protocol), the point to point protocol defined by IETF, is to replace Serial Line Internet Protocol(SLIP). PPP provides solution to the direct data transmission between applications connected with point to point line.

• PPP协议 (PointtoPointProtocol)是由IETF定义的点对点的协议 ；用来取代串行链路互连网络协议SLIP(SerialLineInternetProtocol) ；它为在点对点链路上直接相连的两个设备之间提供一种传送数据包的方法 .