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Re: Alien Waves


From: Dave Cohen <craetdave () gmail com>
Date: Sun, 12 May 2024 22:07:35 -0400

My point was that the technology has little to do with the operational
success of the service. Spectrum controllers better enabling providers to
get out of their own way in selling spectrum did not actually enable the
providers* to get out of their own way in selling spectrum. It *should* be
easier than it used to be, but it isn't, and the problem is not really
technical, but a question of 1) not having full-throated commitment to
wanting to sell spectrum and 2) not having the talent to support it, which
is really just a function of #1.

*Speaking specifically about the very largest CLEC wavelength providers in
North America

On Sun, May 12, 2024 at 6:34 PM Mark Tinka <mark@tinka.africa> wrote:



On 5/13/24 00:11, Dave Cohen wrote:

Mark,

Many/all of these points are fair. My experience is purely terrestrial and obviously both the capacity and economic 
calculations are vastly different in those situations, which I should have called out.


Actually, terrestrial economics are easier to consider because you have
the one thing the subsea applications don't have in abundance... power.

Fair point, terrestrial revenues are significantly lower than subsea
revenues on a per-bit basis, but so are the deployment costs. That evens
out, somewhat.

However, I don’t think that the optical vendor is really the challenge - I would agree that, generally, spectrum is 
going to be available through larger providers that are using “traditional carrier grade” platforms - but rather at 
the service provider level. When something invariably breaks at 3 AM and the third shift Tier I NOC tech who hasn’t 
read the service playbook says “I don’t see any errors on your transponder, sorry, it’s not on our end” because 
they’re not aware that they actually don’t have access to the transponder and need to start looking elsewhere, that’s 
the sort of thing that creates systemic challenges for users regardless of whether the light is being shot across a 
Ciena 6500 or a Dave’s Box-o’-Lasers 1000.


I think you are contradicting yourself a bit, unless I misunderstand your
point.

Legacy vendors who have spectrum controllers have made this concern less
of an issue. But then again, to be fair, adopting spectrum controllers
along with bandwidth expansions via things like gridless line systems and
C+L backbone architectures that make spectrum sales a lot more viable at
scale do come at a hefty $$ premium. So I can understand that offering
spectrum independent of spectrum controllers is going to be more trouble
than it is worth.

Ultimately, what I'm saying is that technologically, this is now a solved
problem, for the most part. That said, I don't think it will be the
majority of DWDM operators offering spectrum services en masse, for at
least a few more years. So even if you want to procure managed spectrum or
spectrum sharing, you are likely to come up against a limited set of
providers willing to sell it, if at all.

Mark.



-- 
- Dave Cohen
craetdave () gmail com

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