nanog mailing list archives

Re: power to the internet


From: Ben Cannon <ben () 6by7 net>
Date: Sat, 28 Dec 2019 17:21:29 -0800

-48VDC is extremely reliable, we have also never had a power incursion on our DC plant. Any of them. 

I’m not sure I’d consider it cheap, but it’s not horrifying expensive and it *works* when you deploy enough of it in a 
2 or 3N fashion.

-Ben

On Dec 28, 2019, at 9:04 AM, Baldur Norddahl <baldur.norddahl () gmail com> wrote:


What is wrong with lead acid battery backup? Seems to be exceedingly stable from my experience. We have all our 
equipment on -48V DC and have never had a power interruption at any site.

The requirements here are 48 hours of backup by law. Telecom is declared to be part of emergency and defense, so they 
put in a requirement for resilience. 

Regards 

Baldur 


tor. 26. dec. 2019 11.33 skrev Joe Maimon <jmaimon () jmaimon com>:
Unless telecom infrastructure has been diligently changing out the lead 
acid battery approach at all their remote terminals, powered gpon, hfc 
and antennae plants will never last more than minutes. If at all.

A traditional car has between a 100-200amp alternator @12volts

How much generating capacity can you get out of a typical hybrid?

Self-isolating and re-tieing inverters. Economic household ATS systems. 
Do those exist?

Enough independent distributed capacity and now comes the ability to 
create grid islands. How might that look?

Electric grid shortage is likely coming to NYC, courtesy of folk of 
certain political persuasion and their love of stone age era living. IP 
decommissioning.

If you have CO loop copper, keep it.

Joe

Don Gould wrote:
This is a very short term problem.

The market is going to fill with battery storage sooner rather than 
later.

Solar is just exploding.

Your car will "house tie".

6G will solve your data problem.

D



-- 
Don Gould
5 Cargill Place
Richmond
Christchurch, New Zealand
Mobile/Telegram: + 64 21 114 0699
www. <http://www.tusker.net.au/>bowenvale.co.nz



-------- Original message --------
From: Michael Thomas <mike () mtcc com>
Date: 26/12/19 2:33 PM (GMT+12:00)
To: nanog () nanog org
Subject: power to the internet


https://www.politico.com/news/2019/12/25/california-power-shutoffs-089678


This article details some of the issues with California's "new reality"
of planned blackouts. One of the big things that came to light with
these blackouts is that our network infrastructure's resilience is
pretty lacking. While I was (surprisingly to me) ok with my DSL
connection out in the boonies, lots and lots of people with cable
weren't so lucky. And I'm not sure how bad the situation is with
cellular infrastructure, but I assume it's not much better than cable.
And I wouldn't doubt that other DSL deployments go dark when power is
down. I have no clue with fiber.

So I guess what I'm wondering is what can we do about this? What should
we do about this? These days IP access is not just convenience, it's the
way we go about our lives, just like electricity itself. At base, it
seems to me that network operators should be required to keep the lights
on in blackouts just like POTS operators do now. If I have power to
light my modem or charge in my phone, I should be able to get onto the
net. That seems like table stakes.

One of the things we learned also is that the blackouts seem to last
between 2-3 days apiece. I happen to have a generator since I'm out in
the boonies and our power gets cut regularly because of snow, but not
everyone has that luxury. I kind of want to think that my router+modem
use about 20 watts, so powering it up would take about 1.5kwh for 3
days. a quick google look shows that I'd probably need to shell out $500
or so for a battery of that capacity, and that's doesn't include your
phones, laptops, tv's, etc power needs. What does that mean? That is a
major expense for a lot of people.

On the bright side, I hear that power generator companies stocks have
gone through the roof.

On the dark side, this is probably coming to a lot more states and
countries due to climate change. Australia. Sigh.

Mike



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