<html><head><style type='text/css'>p { margin: 0; }</style></head><body><div style='font-family: arial,helvetica,sans-serif; font-size: 10pt; color: #000000'>It seems incredibly simple to do, depending on the capabilities of your platform.<br><br>What am I missing?<br><br><div><span name="x"></span><br style="color:rgb( 0 , 0 , 0 );font-family:'times new roman';font-size:medium;font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:normal;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px"><br style="color:rgb( 0 , 0 , 0 );font-family:'times new roman';font-size:medium;font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:normal;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px"><span style="color:rgb( 0 , 0 , 0 );font-family:'times new 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noopener noreferrer"><img src="http://www.ics-il.com/images/youtubeicon.png" style="border:0pt none" src="http://www.ics-il.com/images/youtubeicon.png"></a><span name="x"></span><br></div><hr id="zwchr"><div style="color:#000;font-weight:normal;font-style:normal;text-decoration:none;font-family:Helvetica,Arial,sans-serif;font-size:12pt;"><b>From: </b>"Brandon Martin" <lists.nanog@monmotha.net><br><b>To: </b>nanog@nanog.org<br><b>Sent: </b>Tuesday, October 13, 2020 2:11:24 PM<br><b>Subject: </b>Re: Passive Wave Primer<br><br>On 10/13/20 8:27 AM, Rod Beck wrote:<br>> Looking for a tutorial on passive waves. How it works. Pros and cons. .<br><br>If you're talking about what I think you are, the term the folks who <br>make the transport gear seem to use is "spectrum" as in you (as service <br>provider) sell your customer some portion of the WDM transport spectrum. <br> It typically comes in 50GHz increments or sometimes 100GHz <br>corresponding to the standard ITU channel system but not always.<br><br>To the service provider, this is then an "alien wave" in that they have <br>essentially no control or visibility into it other than light shows up, <br>and they're responsible for getting it to the other end of the path with <br>acceptable path characteristics.<br><br>I have yet to find a service provider that is actually willing to sell <br>this even when they have it in their service offering catalog. The <br>difficulties of coordinating everything with the customer are so extreme <br>that it seems to usually make sense to either lease the customer dark <br>fiber or capitalize the transponders needed to carry it as a managed <br>wave on the provider's transport system. Might make sense if you <br>literally want half the spectrum on a long-haul span or something.<br><br>-- <br>Brandon Martin<br></div><br></div></body></html>