Hi all,
I have 4 Cisco 2960x switches, 1 acting as a "core" with port channels to the other 3 distribution switches. 1 of the port channels is fiber and the other 2 are copper. On the interfaces of every distribution switch I have CRC and Input errors on the links going to the core. It's too big of a coincidence that all 3 would have bad cables or dirty fiber, we've already tried different ports and changing fiber and we still get errors. The configs are pretty simple, nothing real complicated and all interfaces are set at 1000/full with 1500mtu size. Other than a bug I have no idea what could be causing these errors.
