Chapter 10 Data Link Control Protocols. Data Link Control Protocols., Point to Point Data Link Control. One sender, one receiver, one link: easier than broadcast link: No Media Access Control. No need for explicit MAC addressing. E.g., dialup link, ISDN line. Popular point-to-point and high-level DLC protocols: PPP (point-to-point protocol), Routing to avoid forming loops Increase virtual channel ID every time a packet passes a link (works for low dimensional topology). Routing Once the topology is fixed, routing determines the path from the source to the destination. Why routing matters? Consider an 8-node ring with two routing schemes, shortest path routing and random routing., The Data Link Layer in the Internet A home personal computer acting as an internet host. PPP – Point to Point Protocol The PPP full frame format for unnumbered mode operation., Times New Roman Blank Presentation Chapter 9 Agenda Definitions Type of Circuits Point-to-Point Circuits Multipoint circuits Two-wire and Four-wire circuits Analog Circuits Digital Circuits Integrated Services Digital Network (ISDN) - I Integrated Services Digital Network (ISDN) - II T-carrier Systems Switched Multimegabit Data Ser, .