SFF8472-5-THRESHOLD_VIOLATION: Te1/1/1: Rx power high warning; Operating value: -0.4 dBm, Threshold value: -1.0 dBm.
This is a strange problem. Normally, fiber problems have high atenuation. This problem ocurres because the signal is too strong, probably due to a fiber cable that is too small Solution: Change the fiber size. If does not work change the SFP.