TAILIEUCHUNG - Computer Networking: A Top Down Approach Featuring the Internet - Chapter 5 Link Layer and LANs

Tham khảo bài thuyết trình 'computer networking: a top down approach featuring the internet - chapter 5 link layer and lans', công nghệ thông tin, quản trị mạng phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | Chapter 5 Link Layer and LANs Computer Networking: A Top Down Approach Featuring the Internet, 3rd edition. Jim Kurose, Keith Ross Addison-Wesley, July 2004. A note on the use of these ppt slides: We’re making these slides freely available to all (faculty, students, readers). They’re in PowerPoint form so you can add, modify, and delete slides (including this one) and slide content to suit your needs. They obviously represent a lot of work on our part. In return for use, we only ask the following: If you use these slides (., in a class) in substantially unaltered form, that you mention their source (after all, we’d like people to use our book!) If you post any slides in substantially unaltered form on a www site, that you note that they are adapted from (or perhaps identical to) our slides, and note our copyright of this material. Thanks and enjoy! JFK/KWR All material copyright 1996-2006 Kurose and . Ross, All Rights Reserved 5- Chapter 5: The Data Link Layer Our goals: understand principles behind data link layer services: error detection, correction sharing a broadcast channel: multiple access link layer addressing reliable data transfer, flow control: done! instantiation and implementation of various link layer technologies 5- Link Layer Introduction and services Error detection and correction access protocols Link-Layer Addressing Ethernet Hubs and switches PPP Link Virtualization: ATM and MPLS 5- Link Layer: Introduction Some 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, encapsulates datagram “link” data-link layer has responsibility of transferring datagram from one node to adjacent node over a link 5- Link layer: context Datagram transferred by different link protocols over different links: ., Ethernet on first link, frame relay on intermediate .

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