ARP (Address Resolution Protocol)

  • Works in conjunction with IPv4 to discover MAC address of host or node on local network

ARP Table

Sample ARP table

  • Database containing IP --> MAC mappings
  • Two types of entries
    • Dynamic
      • Created when client makes an ARP request that could not be satisfied with data existing in ARP table
    • Static
      • Those someone entered in manually with an ARP utility

Networking Computer Science