I have an Ethernet peripheral (manual here) controlled by an STM32. I have to test that the Ethernet peripheral works correctly right after the board is manufactured. Conveniently, there are three "loopback" modes for testing. (See page 41: near-end, far and connector loopback.)
I wonder if using these three loopback testing modes (doing basic I/O) is sufficient to guaranty that the Ethernet peripheral will work properly in production.
Are there non-loopback tests that I should consider to test the integrity and functionality of my Ethernet peripheral?