Dictionary · Networking Fundamentals
Frame
Data units · Beginner
A data-link unit that wraps a packet for one local segment, including hardware addresses and a check sequence that detects corruption on that hop.
This unit is rebuilt at every hop. Its hardware addresses get the packet across this cable or wireless cell, and the next router creates a different one.
Example: An Ethernet frame contains source and destination hardware addresses, a type field, the packet, and a frame check sequence.
Common misconception
- A frame does not survive unchanged across a router. The router strips it and builds another one.