Hello,
I have an Arduino Uno and an Ethernet Shield. There is no MAC address on the Ethernet Shield. I have tried the example sketches and the lights are blinking but the serial monitor isn't showing anything until I unplug my ethernet cable. Any thoughts?
I added a line to DhcpAddressPrinter to say "Started" when the serial monitor starts up and then does nothing until I hit the reset button then it says "Failed to configure Ethernet using DHCP".
Arduino plugged into COM14, ethernet plugged into laptop ethernet port.
I used the MAC address that my network sharing center showed for the ethernet port.
Is your laptop set up with a dhcp server on the ethernet port? If not, all is working as expected. It should take about 2 minutes to get the "dhcp failed" message.
Do not use the mac address of the laptop in the Arduino. Use DEAD BEEF FEED on the Arduino if a mac address was not included with the shield. No duplicate mac addresses are allowed on any network.
byte mac[] = {0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED};
I am not sure about how to set that up. I do have a network bridge set up. The tx/rx lights are going but it just does nothing untill I unplug it and then it says failed to connect.
Connect it to a router. Does it work then?