100 gig is going to have I believe 4 wavelengths. This command shows you the level on each channel:
show interfaces et31/1 transceiver dom I think if one channel isn’t connected you wouldn’t get 100G link, but you’d still have receive power. Bends and such can impact one channel and not another. This is just a WAG. Good luck, sir. From: AF <af-boun...@af.afmug.com> On Behalf Of Zach Underwood Sent: Wednesday, January 24, 2024 8:45 AM To: AnimalFarm Microwave Users Group <af@af.afmug.com> Subject: Re: [AFMUG] optical TX power levels TX Power 2~6.5dBm I am struggling to get this 100gb link up. In the field this link is quoted at 31 miles. The rx levels are -22 and -20 on both sides but I can't get it to link. I take the same optics to the lab and add 20dbm of attenuator to get almost the same rx levels as the field and it will link up. I have added error-correction encoding reed-solomon per the user guide for links over 40km. So far I have not found a way to change the TX levels in arista, the options are in the CLI but they dont seem to change the outcome. For me this is the first time dealing with 80km optics or 100gb optics over 10km. switch is Arista DCS-7060SX2-48YC6-R https://resource.fs.com/mall/doc/20230531114903y4ljxw.pdf https://www.fs.com/products/115818.html?attribute=29032 <https://www.fs.com/products/115818.html?attribute=29032&id=3462585> &id=3462585 On Wed, Jan 24, 2024 at 8:35 AM Colin Stanners <cstann...@gmail.com <mailto:cstann...@gmail.com> > wrote: There should be. What does their datasheey indicate for tx power range? On Wed, Jan 24, 2024, 7:31 a.m. Zach Underwood <zunder1...@gmail.com <mailto:zunder1...@gmail.com> > wrote: Yep labels identical but there is a difference in default power levels. On Wed, Jan 24, 2024, 8:13 AM Mike Hammett <af...@ics-il.net <mailto:af...@ics-il.net> > wrote: Oh, meaning the variance between the two, otherwise identical models? ----- Mike Hammett <http://www.ics-il.com/> Intelligent Computing Solutions <https://www.facebook.com/ICSIL> <https://plus.google.com/+IntelligentComputingSolutionsDeKalb> <https://www.linkedin.com/company/intelligent-computing-solutions> <https://twitter.com/ICSIL> <http://www.midwest-ix.com/> Midwest Internet Exchange <https://www.facebook.com/mdwestix> <https://www.linkedin.com/company/midwest-internet-exchange> <https://twitter.com/mdwestix> <http://www.thebrotherswisp.com/> The Brothers WISP <https://www.facebook.com/thebrotherswisp> <https://www.youtube.com/channel/UCXSdfxQv7SpoRQYNyLwntZg> _____ From: "Zach Underwood" <zunder1...@gmail.com <mailto:zunder1...@gmail.com> > To: "AnimalFarm Microwave Users Group" <af@af.afmug.com <mailto:af@af.afmug.com> > Sent: Tuesday, January 23, 2024 12:51:39 PM Subject: [AFMUG] optical TX power levels I got 2x 100gb 80km optics from FS that run difficult default TX power levels one is 3.81dBm and the other 2.63dBm, the config on the arista devices hosting the optics is the same. Has anyone seen much difference between optic like this? My sample size is small due to the optices costing $4k each -- Zach Underwood (RHCE,RHCSA,RHCT,UACA) My website <http://zachunderwood.me> advance-networking.com <http://advance-networking.com> -- AF mailing list AF@af.afmug.com <mailto:AF@af.afmug.com> http://af.afmug.com/mailman/listinfo/af_af.afmug.com -- AF mailing list AF@af.afmug.com <mailto:AF@af.afmug.com> http://af.afmug.com/mailman/listinfo/af_af.afmug.com -- AF mailing list AF@af.afmug.com <mailto:AF@af.afmug.com> http://af.afmug.com/mailman/listinfo/af_af.afmug.com -- AF mailing list AF@af.afmug.com <mailto:AF@af.afmug.com> http://af.afmug.com/mailman/listinfo/af_af.afmug.com -- Zach Underwood (RHCE,RHCSA,RHCT,UACA) My website <http://zachunderwood.me> advance-networking.com <http://advance-networking.com>
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