The tweet indicates it is at a specific bit position. That isn't symptomatic of a bad cable/sfp/etc. Analog problems like that tend to be more random. Random bi

The tweet indicates it is at a specific bit position. That isn't symptomatic of a bad cable/sfp/etc. Analog problems like that tend to be more random. Random bit flipping in a fixed bit position is symptomatic of bad ram somewhere, or a router asic gone bad, or various software/config issues.