PPT-Data Link

Layer Review Advanced Computer Networks Advanced Computer Networks Data Link Layer Data Link Layer Provides a welldefined service interface to the network layer Determines how the bits of the physical layer are grouped into frames . Instructor: Rob Nash. Readings: Chapter 2.1-2.4. Where We’ve Been…. Application. Presentation. Session. Transport. End host. One or more nodes. within the network. Network. Data link. Physical. Network. Office of Public Health Scientific Services. CDC . Health Information Innovation Consortium. August . Forum. Brian Lee. Acting Chief Public Health Informatics Officer. Office of Public Health Scientific Services. Kerry Lynn. <. kerlyn@ieee.org. >. 15 December 2015. IoT. Background. Review (Layered Model). source A. source B. source C. dest. . A. dest.B. dest. . C. HTTPS. COAPS. TCP/TLS. UDP/DTLS. IPv6. The two main functions of the data link layer are data link control and media . access control. . . The . first, data link control, deals with the design and procedures for . communication between . two adjacent nodes: node-to-node communication. 5-. 1. . Review of . MAC protocols. channel partitioning,. by time, frequency or code. Time Division, Frequency Division. random access . (dynamic), . ALOHA, S-ALOHA, CSMA, CSMA/CD. carrier sensing: easy in some technologies (wire), hard in others (wireless). 5-. 1. . Review of . MAC protocols. channel partitioning,. by time, frequency or code. Time Division, Frequency Division. random access . (dynamic), . ALOHA, S-ALOHA, CSMA, CSMA/CD. carrier sensing: easy in some technologies (wire), hard in others (wireless). 6. th. edition . Jim Kurose, Keith Ross. Addison-Wesley. March 2012. A note on the use of these . ppt. slides:. We. ’. re making these slides freely available to all (faculty, students, readers). They. Data Link Layer Outline. Parallelism between Transport and Data Link Layer. Tanenbaum’s. Treatment/Model of Data Link Layer. Protocol 1: Utopia. Protocol 2: Stop-and-Wait. Protocol 3: Positive Acknowledgment with Retransmission [. Data Link Protocols. The set of specifications used to implement the DLL.. Timing. Co-ordination . No Timing Co-ordination. Character-Oriented Protocols: interpret a transmission frame as a succession of characters, each usually composed of one byte. (Byte-oriented Protocols). Advanced . Computer Networks . Term . D11. Data Link Layer Outline. Parallelism between Transport and Data Link Layer. Tanenbaum’s. Treatment/Model of Data Link Layer. Protocol 1: Utopia. Protocol 2: Stop-and-Wait. Kevin K. Gifford . University of Colorado . BioServe Space Technologies. 16-January-2013. 1. FISO DTN Overview. Presentation Outline (what to. expect). DTN on the ISS. CGBA payloads. ESA telerobotics and testing. COS . 463. : Wireless . Networks. Lecture. . 5. Kyle Jamieson. [Parts adapted from . J.. . Kurose,. . K. Ross,. . D.. . Holmar. ]. Packet radio Wireless LAN Wired LAN. ALOHAnet . 1960s. Amateur packet radio Ethernet . Introduction to Networks v7.0 (ITN). Module Objectives. Module Title: . Data Link Layer. Module Objective. : Explain how media access control in the data link layer supports communication across networks. Terminology:. hosts and routers are . nodes. communication channels that connect adjacent nodes along communication path are . links. wired links. wireless links. LANs. layer-2 packet is a . frame. ,.