At first glance my initial thought is that this a L1 issue. Have you tried replacing the RJ-45 cable connecting e0d to e0d ?
Also, manually setting the speed may be worth a shot
network port modify -node FAS2520-01 -port e0d -speed-admin 10000
!
network port modify -node FAS2520-02 -port e0d -speed-admin 10000