I have connected Arduino mega with ethernet shield W5100 through an ethernet cable and usb to serial cable to laptop
I have installed Cayenne libraries, selected the correct port and board.
Through Cayenne dashboard- selected Arduino Mega-shield W5100-sketch copy pasted using correct authorization token.
Compiled the code and uploaded, but still Arduino does not get connected to the Cayenne dashboard.
I get serial output as  MAC: FE-DB-D6-E2-9F-C5
 Getting IP…
 DHCP Failed!
How do i solve this? pls help. Its urgent. Thanks in advance