This is assuming your cabling is: switch, LC patch cable to patch panel, fiber backbone to another patch panel, LC patch cable to 2nd switch. On one end of one of the LC patch cables, you may need to flip the two fibers - depending on how your location is cabled. For example, if the patch cable is a straight through cable, you can flip or cross the fibers on one end so that the patch cable is A to B. Again, only on one end of one patch cable in the link. Most (at least in my experience) fiber patch cables are built so that the LC connector housing is able to be removed in the field in order to flip (swap places is probably a better description) them in cases where it is needed. I don't want to steer you down a path that you are not comfortable with doing. I thought I would just at least mention this as a possible course of action if it is needed. Another possibility is to contact Proline tech support. I've always had a great experience with them.
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