Ethernet on LPCxpresso1769 with mbed library

I have a program written using mbed OS and libs, which makes use of TCPSocket. This has been tested on the popular LPC1768 board and works just fine. I’ve recently moved over to the LPCxpresso1769 to increase my pin capacity (amongst other things). Will I have trouble communicating with the board via Ethernet? I’ve heard it has a different chip? How can I get this to work?

The chip is different but very similar, LPC1768 vs. LPC1769. The boards looks quite similar except LPCxpresso1769 requires extra board for CMSIS-DAP (CIMSIS-DAP probe).

Most probably it should work as LPC1768. I would try with the same code you use LPC1768.