It’s that time of year again when real Viavi customers share their greatest network nightmares. These bloodcurdling tales of IT terror will give you chills and send you scrambling for your monitoring tools. 1. The Case of the Disappearing Network Let’s face it, nothing’s worse than logging on to find that your entire network has made like Houdini and disappeared from the face of the earth. But that’s exactly what happened to Peter Lee when a legacy switch went bump in the night.