Hi,
I have upgraded a connection between a WS-C3750X-48P and WS-C3850-48P from a 1 gig connection to 10 gig.
The 1 gig connection was solid, but the 10 gig connection has input errors and crc errors on both ends.
Does the config need to be changed, to upgrade from a 1 gig to a 10 gig connection? I swapped out the fiber on both ends and the sfp+ manufacturer advises that I look at my config.