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[Source] PPP protocol explained in detail

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Posted on 11/29/2014 10:18:39 PM | | |
First of all, let's briefly introduce some basic contents of the PPP protocol: PPP (Point-to-Point Protocol) protocol isOne of the earliest routing protocols, it only requires routers to be interoperable and does not provide any routing options,This applies to connecting two networks, each with a different routing protocol。 The PPP protocol can pass the basic structure information of data grouping between two routers.The PPP protocol is a link-layer protocol designed for simple links such as transmitting packets between equal units.This link provides full-duplex operation and delivers packets in sequence. The purpose of the design is mainly to useBy dial-up or dedicated lineEstablish point-to-point connections to send data to make it variousHosts, bridges, and routersA common solution for simple connections between
    The PPP protocol provides a complete set of solutions to solve the problems of link establishment, maintenance, dismantling, parent protocol negotiation, authentication, etc. PPP protocol includes the following parts: link control protocol LCP (Link Control Protocol); Network Control Protocol (NCP); The most commonly used authentication protocols include PAP (Password Authentication Protocol) and CHAP (Challenge-Handshake Authentication Protocol). LCP is responsible for creating, maintaining, or terminating a physical connection. NCPs are a family of protocols that are responsible for solving what network protocols run on physical connections and troubleshooting problems that occur with upper layer network protocols.




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Posted on 11/29/2014 10:35:29 PM |
PPP protocol is a data link layer protocol in a point-to-point line; It consists of three parts: a method for encapsulating IP datagrams into serial links, a link control protocol LCP for establishing, configuring, and testing data link connections, and a set of network control protocols. PPP is byte-oriented, handles error detection, and supports multiple protocols; PPP does not use serial numbers and confirmation mechanisms, so it does not provide a reliable transmission service. It is suitable for use in point-to-point line transmission.
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