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Data Link Layer

  • Chris Carthern
  • William Wilson
  • Richard Bedwell
  • Noel Rivera

Abstract

This chapter discusses protocols associated with the data link layer. The protocols covered are Address Resolution Protocol (ARP), Reverse Address Resolution Protocol (RARP), link layer functions, Link Layer Discovery Protocol (LLDP), and Cisco Discovery Protocol (CDP). As mentioned earlier, the data link layer must ensure that messages are transmitted to devices on a LAN using physical hardware addresses, and they also must convert packets sent from the network layer, and convert them into frames to be sent out to the physical layer to transmit. The data link layer converts packets into frames, which adds a header that contains the physical hardware device of the source and the destination address, flow control, and a footer with the checksum data (CRC). We are going to dive deeply into this layer.

Keywords

Link Layer Simple Network Management Protocol Medium Access Control Address Address Resolution Protocol Data Link Layer 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Copyright information

© Chris Carthern, William Wilson, Richard Bedwell, and Noel Rivera 2015

Authors and Affiliations

  • Chris Carthern
    • 1
  • William Wilson
    • 1
  • Richard Bedwell
    • 1
  • Noel Rivera
    • 1
  1. 1.AEUSA

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