On Wed, 2013-10-09 at 11:31 +0200, Peter Rathlev wrote: > All fibers were spliced in a new vault and OTDR showed nothing wrong > afterwards. We can see the loss/reflection from the splice but it's well > within tolerances. The total link loss (according to DOM) is 0.6 dB in > one direction and 2.4 dB in the other direction. Budget should be at > least around 8 dB.
Several people on and off list points out the 2.4 dB loss is in itself strange even though it's within the budget. That points towards bad splices. Another interesting point is that the link flaps are not completely random. It depends on time of day and from cursory inspection it looks correlated with when many cars are driving near the area where the splices are made. This could lend itself to this being a fiber problem. Only thing that bothers us is that two different pairs in two different tubes (pairs 1,2 and 43,44) exhibit the exact same symptoms. Which led us to believe that it was unrelated to the fiber itself. -- Peter _______________________________________________ cisco-nsp mailing list cisco-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/