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In computer networking, Point-to-Point Protocol (PPP) is a data link layer (layer 2) communication protocol between two routers directly without any host or any other networking in between. [1] It can provide loop detection, authentication, transmission encryption, [2] and data compression. PPP is used over many types of physical networks ...
Ethernet. The Point-to-Point Protocol over Ethernet (PPPoE) is a network protocol for encapsulating Point-to-Point Protocol (PPP) frames inside Ethernet frames. It appeared in 1999, in the context of the boom of DSL as the solution for tunneling packets over the DSL connection to the ISP 's IP network, and from there to the rest of the Internet.
In computer networking, the Point-to-Point Protocol over ATM (PPPoA) is a layer 2 data-link protocol typically used to connect domestic broadband modems to ISPs via phone lines. It is used mainly with DOCSIS and DSL carriers, by encapsulating PPP frames in ATM AAL5. Point-to-Point Protocol over Asynchronous Transfer Mode (PPPoA) is specified by ...
Both PPP variants handle passwords in the same way as any other PPP variant (e.g. pap or chap), most of the other schemes afaict don't do passwords at all. Ethernet is not ATM-based. See the Ethernet article to see how Ethernet works. To understand how PPPoE works, see the PPPoE article and the RFC for PPPoE. It doesn't use anything about ATM ...
The Serial Line Internet Protocol (SLIP) [1][2] is an encapsulation of the Internet Protocol [a] designed to work over serial ports and router connections. It is documented in RFC 1055. On personal computers, SLIP has largely been replaced by the Point-to-Point Protocol (PPP), which is better engineered, has more features, and does not require ...
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Multiprotocol Encapsulation over ATM is specified in RFC 2684. It defines two mechanisms for identifying the protocol carried in ATM Adaptation Layer 5 (AAL5) frames. It replaces RFC 1483, a standard data link access protocol supported by DSL modems. RFC 2684 describes two encapsulation mechanisms for network traffic: Virtual Circuit ...
PPPoX ( PPP over X) designates a family of encapsulating communications protocols implementing Point-to-Point Protocol . Specific implementations: PPPoE: PPP over Ethernet – which can use 802.1q VLANs. PPPoA: PPP over ATM. PPTP: PPP encapsulated over GRE with a parallel control connection and some optional encryption.