400G Does Not Fail — It Degrades
An interface can be up while the link is already operating outside a stable margin. At 400G, a link being 'up' is not a useful indicator of health.
An interface can be up while the link is already operating outside a stable margin. At 400G, a link being 'up' is not a useful indicator of health.
A $350 optic turned into an $18,000 problem. Not because the optic failed — because nobody cleaned the connector.