CSMA/CD

CSMA/CD

1. Step 1. A device with a frame to send listens until the Ethernet is not busy.

   • Step 2. When the Ethernet is not busy, the sender begins sending the frame.
     • Step 3.The sender listens while sending to discover whether a collision occurs
       • A. They send a jamming signal that tells all nodes that a collision happened.
       • B. They independently choose a random time to wait before trying again, to avoid unfortunate timing
       • C. The next attempt starts again at Step 1.