1 WIZnet chip to work properly, you can wake up mcu
2 TCP_Client the mode immediately after power restart can not connect to the server: the need KEEP_ALIVE mechanism, send heartbeat packets in a period of time, does not receive the disconnect connector reinitialize
3 as a TCP server, not the establishment of a SOCKET correspond to multiple clients, but to create some multi-socket initialization, corresponding to multiple clients.
Unique MAC address. 4: A: Solution:Application MAC address from the IEEE organization. B: Solution:After the first byte of the first MAC address must guarantee an even number, followed by the selected sequence of their products MCU ID 5 bytes 5 bytes as the MAC address
5 WIZnet chip and PC communication, then it can Wireshark packet capture by direct, public direct communication has not been a good tool.