On 9 August 2018 at 12:33, Stuart Henderson <[email protected]> wrote:
> I've been trying out FS transceivers. Nothing fancy, just 10Gb LR SFP+ > for data centre interconnects etc. Out of 8 deployed there have been > 2 where the link has failed, then the reported Tx power from DOM has > shown as -40.0 dBm - one shortly after deploying, one after ~2 months. > Worse still it's intermittent, they have come back to life afterwards. > fs support think this is faulty modules rather than a switch problem. > > I wondered if anyone else is seeing a similar failure mode, or what > sort of failure rate you're seeing? (FS themselves are claiming <1.5% > but then they would, wouldn't they..) > > I have heard at least one horror story (operator on this list) who had issues with transceivers being too cold and generating errors. May have been FS, not too sure. > Should I just buy flexoptix? They are over twice the price though it > doesn't take many train tickets to London to cover that .. > > > FlexOptix +1. We have had a small number of failures of those (a couple of older 1000base-T cu SFPs) but overall an excellent experience all the way upto 100G QSFP28. Majority (volume) of what we buy, however, is 10G BiDi for active FTTP. Rich. Network Engineering Manager Exa Networks Ltd :: AS30740 [email protected]
