Support high speed hardware implementations, PPP provides that theĭefault encapsulation header and information fields fall on 32-bitīoundaries, and allows the trailer to be padded to an arbitrary The encapsulation may be shortened to as few as 2 octets. In environments where bandwidth is at a premium,
PPP FRAME FLAG SOFTWARE
Implementations, and a software implementation is provided.īy default, only 8 additional octets are necessary to form theĮncapsulation. PPP uses the HDLC Frame Check Sequence for errorĭetection.
PPP FRAME FLAG FREE
Some protocols expect error free transmission, and either provideĮrror detection only on a conditional basis, or do not provide itĪt all. Intended that PPP provide a common solution for easy connection ofĪ wide variety of hosts, bridges and routers. Network-layer protocols simultaneously over the same link.
The PPP encapsulation also provides for multiplexing of different Mechanism is specified to allow control data such as XON/XOFF toīe transmitted transparently over the link, and to remove spuriousĬontrol data which may be injected into the link by intervening PPP has been carefully designed to retain compatibility with mostĬommonly used supporting hardware. These links MUST be full-duplex, but MAY be eitherĭedicated or circuit-switched. Synchronous links and asynchronous links with 8 bits of data and PPP provides an encapsulation protocol over both bit-oriented Schemes do exist for the transmission of datagrams over most Protocols available, but there is not one which has been agreed Non-standard (and at least one de facto standard) encapsulation Lack of a standard encapsulation protocol. One reason for the small number of point-to-point IP links is the For example, asynchronous RS-232-C interfaces Point-to-point links are among the oldest methods of dataĬommunications and almost every host supports point-to-pointĬonnections. Relatively few of these hosts areĬonnected with simple point-to-point (i.e., serial) links. Most of the other hostsĪre connected through Wide Area Networks (WANs) such as X.25 style Hosts are connected to Local Area Networks (LANs) of various In the last few years, the Internet has seen explosive growth in Fast Frame Check Sequence (FCS) Implementation. 54ħ.8 Address-and-Control-Field-Compression. 33Ħ.5 Terminate-Request and Terminate-Ack. 10Ĥ.3 Link Dead (physical-layer not ready). RFC 1331 Point-to-Point Protocol May 1992ġ.
The Internet Engineering Task Force (IETF). This RFC is a product of the Point-to-Point Protocol Working Group of Protocol which is able to negotiate a rich assortment ofĬonfiguration parameters and provides additional management PPP Link Control Protocol (LCP), an extensible option negotiation This document defines the PPP encapsulation scheme, together with the A family of Network Control Protocols (NCPs) for establishingĪnd configuring different network-layer protocols. A Link Control Protocol (LCP) for establishing, configuring,ģ.
PPP FRAME FLAG SERIAL
A method for encapsulating datagrams over serial links.Ģ. The Point-to-Point Protocol (PPP) provides a method for transmittingĭatagrams over serial point-to-point links. Standards" for the standardization state and status of this protocol. Please refer to the current edition of the "IAB Official Protocol This RFC specifies an IAB standards track protocol for the InternetĬommunity, and requests discussion and suggestions for improvements. This document defines the PPP encapsulation scheme, together with the PPP Link Control Protocol (LCP), an extensible option negotiation protocol which is able to negotiate a rich assortment of configuration parameters and provides additional management functions. Simpson Ersetzt: RFC 1171, RFC 1172 Ersetzt durch: RFC 1548 The Point-to-Point Protocol (PPP) for the Transmission of Multi-protocol Datagrams over Point-to-Point Links Autor(en): W.
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