You are saying that the original SFPs became completely inoperable? Power-cycling or reseating the SFPs had no positive effect? You had to resort to replacing the SFPs with new/different units? You had to do this simultaneously on both ends?
-- Espi On Thu, Nov 9, 2017 at 2:26 PM, CSSU NetAdmin <[email protected]> wrote: > We have an interesting situation with a dark fiber connection between two > of our schools. For 15 months, the connection was great- an HP switch with > 10 GB SFP on one end and a Sophos 10 GB SFO on the other. Last Friday, the > connection dropped. After switching out the switch, the SFP for the switch > and the SFP and port on the Sophos, the connection only came up when we > replace the SFP's on both ends. It was fine until today- the connection > dropped. We could only bring it back by replacing the SFP's- with 1 GB > units because we did not have 10 GB replacements. Last week, our fiber > provider test the fiber from both ends and it was clear all the way to > other end- which is about 12 miles. We talked to them today and they > remain convinced that the fiber is fine. We are going to replace the patch > cables next but remain skeptical that it isn't an issue with the fiber > somewhere along the line. > > Does anyone have suggestions on where else to look? Thanks! >
