Full Duplex

The device must not wait before sending a Frame. It can Send at Receive at the same time. (E.g. Landline Telephone)

• When Full Duplex is enabled it disables CSMA/CD because both can send & receive at the same time in Full Duplex settings so collisions cannot occur.

• Ethernet Switch is a dedicated Bandwidth device that supports Full duplex hence it does not share the bandwidth between the devices & provide full 10Mbps connection to each device connected to it.

• On Full Duplex side you will see CRC / RUNT Errors.

• Autonegotiation failure leads to Duplex Mismatch

Reference:

• CCNA 200-301 OCG, Volume 1, Pg. 160 - Wendell Odom.

• https://courses.davidbombal.com/courses/267624/lectures/4152523