2017-10-05 1:00 GMT+02:00 Aaron Gould <aar...@gvtc.com>: > Thanks Pavel, Ok here it is. Does this mean it should work ? > > > > Lane 0 > > Laser bias current : 32.187 mA > > Laser output power : 1.135 mW / 0.55 dBm > > Laser receiver power : 0.000 mW / -40.04 dBm >
As Sebastien mentioned above, this output means that you don't receive any light. -40 dBm is just a fancy way to say "darkness". At the same time you see some emitted power, this means you "send" light to the other end. Check it on both sides: if A doesn't see what B emits or vise-versa, it normally means you have a problem in the middle. Check your cabling (make sure that it's not MMF :) NB: as 40GE is technically 4×10GE (wavelength multiplexed in this case), you have four lanes for each port, this is why it's called Quad-SFP and ER4. When you manage to have the light on the other side of your fiber, you might face another problem. As this is an ER, you can saturate your receiver if you don't have enough attenuation. So either use an attenuator or the above mentioned common trick with turning the fiber around your finger to let the light escape through the cladding (fix it with tape). See Chuck's comment for more details. Or just replace the optics with a QSFP-DAC ) _______________________________________________ juniper-nsp mailing list juniper-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/juniper-nsp