PPP in the Protocol Stack You can use PPP over both asynchronous and synchronous connections At the Physical layer of the OSI reference model Link Control Protocol (LCP) Used at the Data Link layer to establish, configure, and test the connection Network Control Protocols (NCPs) Allow the simultaneous use of multiple Network layer protocols and are required for each protocol that uses PPP CCNA Guide to Cisco Networking Fundamentals PPP (continued) PPP can be used over several different physical interfaces, including the following: Asynchronous serial ISDN synchronous serial High-Speed Serial Interface (HSSI) CCNA Guide to Cisco Networking Fundamentals PPP PPP Internet standard protocol defined in RFCs 21 Provide point-to-point, router-to-router, host-to-router, and host-to-host connections Considered a peer technology based on its point-to-point physical configuration Commonly used over dial-up or leased lines to provide connections into IP networks Serial Line Internet Protocol (SLIP) was the predecessor to PPP CCNA Guide to Cisco Networking Fundamentals Objectives (continued) Describe the role of virtual circuits and performance parameters in Frame Relay Understand the Frame Relay topologies Understand the difference between multipoint and point-to-point configurations Configure and monitor Frame Relay CCNA Guide to Cisco Networking Fundamentals Objectives Describe PPP encapsulation Configure PPP encapsulation and its options Describe and enable PPP multilink Understand Frame Relay standards and equipment CCNA Guide to Cisco Networking Fundamentals ![]() ![]() ![]() CCNA Guide to Cisco Networking Fundamentals Chapter 11 PPP and Frame Relay
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