Hey! I'm using an Arduino Mega 2560 with an original Arduino Ethernet Shield R3 which is working fine. I now also got an cheap asian "copy" ethernet shield for which I unfortunately don't have an exact name or brand. It uses an WIZnet iEthernet W5100 chip like the original one but has an slightly different number at the end which is: PGS71-010 1422. The shield also says "MEGA compatible" but I can't get it to work with my Arduino.
When using the WebServer example sketch from the IDE, I get the IP of the server on my serial monitor but I can't ping the shield, nor telnet or reach it with a browser. I've used the same settings as I did with the original shield (IP = 192.168.0.177 and a unique mac address and my mac has a static ip=192.168.0.2). The shields are always directly connected to my mac's lan-port. I now discovered that when I connect the original shield my mac immediately shows a correct IP for itself in the network utility and indicates an active connection but when i connect the other shield my mac doesn't show any ip nor indicates an valid connection.
I've no SD-card inserted and I've also tried to set the pin 4 to OUTPUT and write HIGH but it didn't work.
Is there anything else I can try to get this shield to work or am I missing anything?
Thanks for your help, Philipp