Frame check sequence

Structure of an Ethernet packet, including the FCS that terminates the Ethernet frame[1]

A frame check sequence (FCS) is an error-detecting code added to a frame in a communication protocol. Frames are used to send payload data from a source to a destination.

  1. ^ "3.1.1 Packet format", 802.3-2012 - IEEE Standard for Ethernet (PDF), IEEE Standards Association, 2012-12-28, retrieved 2015-07-05