Frame (Networking)

First encountered this during my time at Ericsson.

A frame is the primary structured unit of transmission at at the Data Link Layer (Layer 2) of the OSI model.

Frame vs. packet?

A frame is the data unit for the data link layer, whereas a packet is the transmission unit of the network layer.

• https://www.reddit.com/r/networking/comments/9fugxn/whats_the_difference_between_a_packet_and_a_frame/

Generally consists of:

• Header
• Payload (Data)
• Trailer
  • has the CRC

For example, see CAN frame.

Frame Format