Improve signal integrity of Ethernet signals (if indeed is needed)
As I can deduct from Picture #1, the design has the interface trace length of about 10 cm (about 600ps one way flight time), and the trace impedance is quite higher than the impedance of driver. For unterminated transmission lines the transmitter-side "shoulder" is normal, but it should be half way (Rdriver = Rtline) for the best signal integrity.  

The overshoot and undershoot on signals is likely caused by bad probe connection to ground. 

You may want to increase values of serial resistors and see if it improves waveforms, although they do not look bad at all already.