Auto-negotiation failure verification

Auto-negotiation bug verification (Part 1)

Introduces the results of verification using an actual machine for the case of mode mismatch (10Mbps full duplex on the other side) in 100BASE-TX.

 A Cisco switch is used here, but other companies' switches can be used as long as the communication speed and communication mode can be specified.

The network configuration diagram is shown below.

 Leave the auto-negotiation function of the S_A switch enabled, and set the f0/1 port on the S_B switch side to a communication speed of 10 Mbps and a communication mode of full duplex.

● Switch S_A setting