Hey folks - I have a new install comming up that I am pretty sure I will need a ZX transceiver for. Ill be connecting a remote 3560-E to a 6513 using SFP connectors. I am pretty positive Ill be using a GLC-ZX-SM on both ends, but I am not sure how to determine 1) if I need attenuation, 2) how much to use, and finally 3) does cisco sell these, or will i need a 3rd party vendor?
I need to re-scan the fibers again with a power meter and OTDR, because I seem to recall getting massivly different distance readings from each end - one side said 19 miles, the other said 32. Either way, I am positive I am going to be over the (approximate) 6 miles for LH, right?