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Understanding Point-to-Point Protocol Operation in Networking

Learn about the layers of PPP, including Physical and Data Link Layers, HDLC derivatives, LCP, NCP, PAP, and CHAP. Explore PPP frame structure, LCP fields, configuration, negotiation, and termination of links.

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Understanding Point-to-Point Protocol Operation in Networking

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  1. Point to Point Protocol • Operation

  2. Point to Point Protocol • Protocol Layers of PPP • Physical Layer • Data Link Layer – HDLC derivative • Other protocols used by PPP • LCP – Link control protocol • NCP Network control protocol • PAP – Password Authentication protocol • CHAP – challenge handshake Authentication protocol

  3. Point to Point Protocol • PPP frame

  4. Point to Point Protocol • LCP – Link Control Protocol • Establish, configure, maintain and terminate links • Negotiate options across end points – max receive unit, authentication, compression • Protocol id C021(hex)

  5. Point to Point Protocol • LCP – Link Control Protocol field • Code : type of LCP packet • Configure request • Ack, nak, reject • ID – match request and reply • Length • Information

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