<div dir="ltr"><div dir="ltr"><div style="color:rgb(0,0,0);font-family:Arial;font-size:13.3333px">> Looking at EDFA options... they are all ~1500nm as far as I can tell. Is there a specific model you are talking about?</div><div style="color:rgb(0,0,0);font-family:Arial;font-size:13.3333px"><br></div><div style="color:rgb(0,0,0);font-family:Arial;font-size:13.3333px">Yeah, that is a consequence of how the EDFA technology works. It really only works in the C-band and sometimes the L-band, depending on how it's manufactured. If you contact one of the manufacturers on this list they should be able to help you with solutions engineering.</div><div style="color:rgb(0,0,0);font-family:Arial;font-size:13.3333px">You would essentially be looking at a 10x 10G LAG <u>or</u> a single 100G channelized optic (which are a thing, just pay attention to how they achieve that, and that it runs at 100GHz)</div><div style="color:rgb(0,0,0);font-family:Arial;font-size:13.3333px"><br></div><div style="color:rgb(0,0,0);font-family:Arial;font-size:13.3333px">There are other amplifier systems, like the one Brandon mentioned, which operates via another mechanism. Personally, I would recommend the EDFA system for two reasons, it's more commoditized, and depending on the model you purchase, you will have some. spare DWDM channels. You might not need it today, but man is it nice to have that extra capacity sitting there.</div><div style="color:rgb(0,0,0);font-family:Arial;font-size:13.3333px"><br></div><div style="color:rgb(0,0,0);font-family:Arial;font-size:13.3333px">If you do go for a super extended range optic (like what Brandon mentioned), make sure the pluggable power draw is within range of your gear. No point in burning out an expensive optic and your gear.</div><div style="color:rgb(0,0,0);font-family:Arial;font-size:13.3333px"><br></div><div style="color:rgb(0,0,0);font-family:Arial;font-size:13.3333px">I could go on about chromatic dispersion for days, I think that is so interesting, but a little outside the scope of this chain. Whatever manufacturer you engage with will help with that. Thankfully this tech has gotten to the point where we can just slap that module in and not worry about what is actually going on behind the scenes.</div><div style="color:rgb(0,0,0);font-family:Arial;font-size:13.3333px"><br></div><div style="color:rgb(0,0,0);font-family:Arial;font-size:13.3333px">- Dan</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Mon, Sep 27, 2021 at 3:43 PM Pierre LANCASTRE <<a href="mailto:pierre.lancastre@gmail.com">pierre.lancastre@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="auto">Hi<div dir="auto"><br></div><div dir="auto">+1 for SmartOptics products. Got M-1601 + optics, did the job very well</div><div dir="auto"><br></div><div dir="auto">Pierre</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">Le lun. 27 sept. 2021 à 20:52, Kevin Menzel via NANOG <<a href="mailto:nanog@nanog.org" target="_blank">nanog@nanog.org</a>> a écrit :<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
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<p class="MsoNormal"><span>We’ve had DCP-M boxes in service for a few years now on our +40km links, with their PAM4 100Gb optics. It’s been SO easy.<br>
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If I had the money, we’d throw DCP-M boxes at every link we have.<u></u><u></u></span></p>
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<p class="MsoNormal"><span>-Kevin Menzel<u></u><u></u></span></p>
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<p class="MsoNormal"><b><span lang="EN-US">From:</span></b><span lang="EN-US"> NANOG <nanog-bounces+kevin.menzel=<a href="mailto:sheridancollege.ca@nanog.org" rel="noreferrer" target="_blank">sheridancollege.ca@nanog.org</a>>
<b>On Behalf Of </b>Joe Freeman<br>
<b>Sent:</b> September 24, 2021 17:07<br>
<b>To:</b> Randy Carpenter <<a href="mailto:rcarpen@network1.net" rel="noreferrer" target="_blank">rcarpen@network1.net</a>><br>
<b>Cc:</b> nanog <<a href="mailto:nanog@nanog.org" rel="noreferrer" target="_blank">nanog@nanog.org</a>><br>
<b>Subject:</b> Re: 100GbE beyond 40km<u></u><u></u></span></p>
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<p class="MsoNormal" style="background:yellow"><span style="font-size:10pt;font-family:Arial,sans-serif;color:black">This message was sent from outside of Sheridan College. Please be careful when opening attachments, clicking links, or responding to requests
for information.</span><span style="font-size:10pt;font-family:Arial,sans-serif"><u></u><u></u></span></p>
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<p class="MsoNormal">Open Line Systems can get you to 80K with a 100G DWDM Optic (PAM4) -
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<p class="MsoNormal">I've used a lot of SmartOptics DCP-M40 shelves for this purpose. They also have transponders that allow you to go from a QSFP28 to CFP to do coherent 100G out to 120Km using the DCP-M40, without a need for regen or extra amps in line.<u></u><u></u></p>
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<p class="MsoNormal">The DCP-M40 is a 1RU box. It looks like a deep 40ch DWDM filter but includes a VAO, EDFA amp, and a WSS I think. <u></u><u></u></p>
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<p class="MsoNormal">On Fri, Sep 24, 2021 at 4:40 PM Randy Carpenter <<a href="mailto:rcarpen@network1.net" rel="noreferrer" target="_blank">rcarpen@network1.net</a>> wrote:<u></u><u></u></p>
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How is everyone accomplishing 100GbE at farther than 40km distances?<br>
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Juniper is saying it can't be done with anything they offer, except for a single CFP-based line card that is EOL.<br>
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There are QSFP "ZR" modules from third parties, but I am hesitant to try those without there being an equivalent official part.<br>
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The application is an ISP upgrading from Nx10G, where one of their fiber paths is ~35km and the other is ~60km.<br>
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thanks,<br>
-Randy<u></u><u></u></p>
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</blockquote></div><br clear="all"><div><br></div>-- <br><div dir="ltr" class="gmail_signature"><div dir="ltr"><div><div dir="ltr">Daniel Murphy<div>Senior Data Center Engineer</div><div>(646) 698-8018</div></div></div></div></div></div>