ITC542 201830 Lecture4.pptx

ITC542 201830 Lecture4.pptx - Internetworking with TCP/IP...

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SCHOOL OF COMPUTING AND MATHEMATICS 2018 - Dr Sabih Rehman, Charles Sturt University Lecturer: Dr Sabih Rehman Email: [email protected] Lecture 4- Data Link and Network Layer Protocols Figures in this presentation taken from Pyles.J., Carrell, J., Tittel, E (2017). Guide to TCP/IP: IPv6 and IPv4, Cengage Learning Internetworking with TCP/IP
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SCHOOL OF COMPUTING AND MATHEMATICS Lecture 4 – Synopsis from Previous Lecture 2018 - Dr Sabih Rehman, Charles Sturt University IPv4 header fields have been the method for providing reliable sending & receiving of data on networks for decades The IPv6 header structure is much simpler than the one for IPv4 , but it performs the same basic function.IPv6 extension headers are used to add special functionality to an IPv6 packet. The Hop-by-Hop Options extension header carries data that affects routers along the network path Jumbograms are a special type of service for IPv6 packets that can use the Hop-by-Hop Options extension header to add an alternate packet length field for the packet Although the IPv6 header is much larger than the IPv4 header, that’s mainly because of the much larger address space for IPv6
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SCHOOL OF COMPUTING AND MATHEMATICS Lecture 4 - Objectives 2018 - Dr Sabih Rehman, Charles Sturt University Explain the fundamental concepts associated with Data Link layer protocols that operate over different network link types Distinguish among the different types of packets used on IP networks Describe how hardware address resolution occurs for IPv4 and IPv6 with Address Resolution Protocol (ARP) and Neighbor Discovery Protocol (NDP) protocols Explain the essentials of the Internet Protocol, both for IPv4 and IPv6, including route resolution processes, IP datagrams, fragmentation, and the differences between IPv4 and IPv6
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SCHOOL OF COMPUTING AND MATHEMATICS Data Link Protocols Key functions of the Data Link layer Media Access Control (MAC) Logical Link Control (LLC) Point-to-point data transfer Shipping data from one MAC layer address to another 2018 - Dr Sabih Rehman, Charles Sturt University
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SCHOOL OF COMPUTING AND MATHEMATICS Data Encapsulation Techniques Data encapsulation techniques are used to enclose packet payloads for transmission across WAN links involve specialized protocols such as: Point-to-Point Protocol (PPP) High-Level Data Link Control Synchronous Data Link Control Special handling for X.25, frame relay and ATM 2018 - Dr Sabih Rehman, Charles Sturt University
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SCHOOL OF COMPUTING AND MATHEMATICS Data Encapsulation WAN encapsulation of frames at Data Link layer involves one or more of the following services Addressing Bit-level integrity check Delimitation Protocol identification (PID) 2018 - Dr Sabih Rehman, Charles Sturt University
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SCHOOL OF COMPUTING AND MATHEMATICS Point-to-Point Protocol Provides Frame delimitation Protocol identification and bit-level integrity check services RFC 1661 includes Encapsulation methods
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