The manufacturers supply a ‘programmer box’ that usually have a USB connector, a SFP slot, and some software to reprogram the SFP’s. The software usually lets you set how the SFP identifies itself to the switch / router so that you can work around the asinine vendors that insist on locking to vendor specific optics, and to set the frequency on the tunable optics.
https://www.flexoptix.net/en/flexbox.html?395=1357&co9424= <https://www.flexoptix.net/en/flexbox.html?395=1357&co9424=> for example. They will send one for free if you order optics from them. Mark > On Jan 26, 2022, at 8:25 AM, [email protected] wrote: > > How do you tune the tunable optics? Is it done in the config of the router, > or do you tune it before installing somehow? > > From: AF <[email protected]> On Behalf Of Mark Radabaugh > Sent: Tuesday, January 25, 2022 9:33 PM > To: AnimalFarm Microwave Users Group <[email protected]> > Subject: Re: [AFMUG] CWDM vs DWDM, Single Fiber vs Dual fiber > > We spare with tunable optics. Production is channel specific but spares are > tunable to the frequency. Price is usually 4x the fixed optics, but as you > noted, having to spare every channel gets pricy. > > Mark > > >> On Jan 25, 2022, at 7:57 PM, [email protected] >> <mailto:[email protected]> wrote: >> >> My recollection is the DWDM optics are slightly cheaper, but the CWDM muxes >> are cheaper. I think if you fully populate the CWDM MUX then the cost was a >> wash and it didn’t matter which one you bought. If you are only ever going >> to use a few channels then CWDM is noticeably cheaper. >> >> The biggest hassle IMO is inventory and spares. If you’re using 10 >> different color optics then you need 10 different spares on the shelf. If >> you use 40 colors that cost $400 each then you need $16,000 in spare optics. >> That’s not even a bad scenario. Some of the more exotic optics are $2300 >> from Fiber Store. I have a quote in hand for 80km 100G Arista branded >> optics from another vendor for over $6000. If you’re using multiple colors >> of those then you may find yourself with a whole lotta capital tied up in >> spare parts. >> >> >> >> >> From: AF <[email protected] <mailto:[email protected]>> On >> Behalf Of Carl Peterson >> Sent: Tuesday, January 25, 2022 4:43 PM >> To: AnimalFarm Microwave Users Group <[email protected] >> <mailto:[email protected]>> >> Subject: [AFMUG] CWDM vs DWDM, Single Fiber vs Dual fiber >> >> We are leasing a few new strands of dark to a couple locations. On our >> other paths we have just Done BiDi for our ring or payload and used another >> for our routed/management network. For these strands, I'm thinking of doing >> passive WDM. >> >> Any benefit to DWDM vs CWDM if you aren't expecting to scale it? Why would >> you use two strands vs one strand? We generally use one strand for >> everything, either BiDi or GPON so my brain just sort of assumes that. What >> am I missing? >> >> -- >> https://www.fs.com/products/43711.html?attribute=4364&id=297095 >> <https://www.fs.com/products/43711.html?attribute=4364&id=297095> >> -- >> AF mailing list >> [email protected] <mailto:[email protected]> >> http://af.afmug.com/mailman/listinfo/af_af.afmug.com >> <http://af.afmug.com/mailman/listinfo/af_af.afmug.com> > > -- > AF mailing list > [email protected] > http://af.afmug.com/mailman/listinfo/af_af.afmug.com
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