The reported speed link in terminal(10Mbps) does not match the graphical UI(100Mbps). This happens on a RB Groove 52HPn v6.48 and a LHG 5 v6.46.3
The correct speed reported by the other device is 100Mbps. The link has no problems otherwise.

By executing /interface ethernet print .... you're getting actual static settings (similar but not exactly the same as /interface ethernet export). What you're after is output of command /interface ethernet monitor ether1 once ...