The Data Link Layer

• Error detection and possible correction

• Physical addressing – MAC(Media Access Control)

  • 48 bit address
    • First 24 bits – Brand
    • Last 24 bits – Model?
  • Hard coded

• Best known example: Ethernet

• Flow Control & Order(010 is 010 not 100)

• Examples:

  • Bridge
  • Switch

• PDU: frame