Do you need dispersion compensation for 100GBASE-ZR4? On Wed, Jan 24, 2024 at 8:03 AM Mike Hammett <af...@ics-il.net> wrote:
> Well, and it would depend on which type of 100G. Some is 10x10, some is > 25x4, and some is 100x1. > > > > ----- > Mike Hammett > Intelligent Computing Solutions <http://www.ics-il.com/> > <https://www.facebook.com/ICSIL> > <https://plus.google.com/+IntelligentComputingSolutionsDeKalb> > <https://www.linkedin.com/company/intelligent-computing-solutions> > <https://twitter.com/ICSIL> > Midwest Internet Exchange <http://www.midwest-ix.com/> > <https://www.facebook.com/mdwestix> > <https://www.linkedin.com/company/midwest-internet-exchange> > <https://twitter.com/mdwestix> > The Brothers WISP <http://www.thebrotherswisp.com/> > <https://www.facebook.com/thebrotherswisp> > > > <https://www.youtube.com/channel/UCXSdfxQv7SpoRQYNyLwntZg> > ------------------------------ > *From: *dmmoff...@gmail.com > *To: *"AnimalFarm Microwave Users Group" <af@af.afmug.com> > *Sent: *Wednesday, January 24, 2024 7:53:21 AM > *Subject: *Re: [AFMUG] optical TX power levels > > 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&id=3462585 > > > > On Wed, Jan 24, 2024 at 8:35 AM Colin Stanners <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> > 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> wrote: > > Oh, meaning the variance between the two, otherwise identical models? > > > > ----- > Mike Hammett > Intelligent Computing Solutions <http://www.ics-il.com/> > [image: Image removed by sender.] <https://www.facebook.com/ICSIL>[image: > Image removed by sender.] > <https://plus.google.com/+IntelligentComputingSolutionsDeKalb>[image: > Image removed by sender.] > <https://www.linkedin.com/company/intelligent-computing-solutions>[image: > Image removed by sender.] <https://twitter.com/ICSIL> > Midwest Internet Exchange <http://www.midwest-ix.com/> > [image: Image removed by sender.] <https://www.facebook.com/mdwestix>[image: > Image removed by sender.] > <https://www.linkedin.com/company/midwest-internet-exchange>[image: Image > removed by sender.] <https://twitter.com/mdwestix> > The Brothers WISP <http://www.thebrotherswisp.com/> > [image: Image removed by sender.] > <https://www.facebook.com/thebrotherswisp>[image: Image removed by > sender.] > > > <https://www.youtube.com/channel/UCXSdfxQv7SpoRQYNyLwntZg> > ------------------------------ > > *From: *"Zach Underwood" <zunder1...@gmail.com> > *To: *"AnimalFarm Microwave Users Group" <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 > > > -- > AF mailing list > AF@af.afmug.com > http://af.afmug.com/mailman/listinfo/af_af.afmug.com > > > > -- > AF mailing list > AF@af.afmug.com > http://af.afmug.com/mailman/listinfo/af_af.afmug.com > > -- > AF mailing list > AF@af.afmug.com > http://af.afmug.com/mailman/listinfo/af_af.afmug.com > > -- > AF mailing list > 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 > > -- > AF mailing list > AF@af.afmug.com > http://af.afmug.com/mailman/listinfo/af_af.afmug.com > > -- > AF mailing list > AF@af.afmug.com > http://af.afmug.com/mailman/listinfo/af_af.afmug.com >
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