Hi, I'm trying to understand the optimal TX and RX power of an SFP installed in a Gigabit port. I've seen several times that when the value was something between -3.5 dbm to -4.5 dbm and this was causing problems even though the interface was always up and no errors. However looking at https://www.cisco.com/c/en/us/products/collateral/interfaces-modules/gigabit-ethernet-gbic-sfp-modules/datasheet-c78-366584.html it shows the range as TX: -3 to -9.5 and RX: -3 to -20.
So my question is that should you take these values as a reference or what is the highest and lowest ranges should be for a 1000BASE-LX SFP?
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