nanog mailing list archives

Re: The future of transport in the metro area


From: Mark Tinka <mark.tinka () seacom mu>
Date: Sat, 3 Aug 2019 12:58:01 +0200



On 3/Aug/19 03:14, Brandon Martin wrote:

 

How are they handling optical power balancing across amplifiers and
such?  Do they just trust the customer to provide light at the power
levels agreed upon?  Bulk attenuate the entire "spectrum"
automatically?  Monitor and drop the whole lot if something is out of
whack and causing saturation or gain balance problems for others?

Or is this something you're only seeing at metro distances where
separate amplifiers are superfluous?

The details about this are very vendor-specific, and each vendor has
some way in which they implement this. Spectrum would be a very
customized product between the vendor and operator, and also between the
operator and customer. So no BCP for this, as of yet, that I know of.


  I've inquired with a few metro operators in my area about something
like this, albeit a few years ago, and I got a pretty hard "no way
we'd ever do that" out of them presumably for the reasons above.

We are seeing requests from as low as 600km, up to 1,600km, all the way
to 7,000km.

Mark.


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