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<div class="moz-cite-prefix">On 1/13/22 01:11, Scott T Anderson via
NANOG wrote:<br>
<br>
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<p class="MsoNormal">For those individuals with backup battery
power for their modem/router, do they maintain Internet access
throughout a power outage (as long as their backup power
solution works)? I.e., does the rest of the ISP network
maintain service throughout a power outage?</p>
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<br>
In 2016, there was a massive storm in my neighborhood that flooded
my fibre provider's GPON PoP. That was an outage.<br>
<br>
In 2018, there was a neighborhood-wide power outage that caught the
provider off-guard re: their own backup.<br>
<br>
In recent years, the provider has been able to maintain uptime
through extended and/or multiple daily power outages.<br>
<br>
But in the end, your provider will be the weakest link, if you are
able to keep your devices powered throughout a lengthy or multi-day
outage.<br>
<br>
The mobile operators don't seem to be able to last more than 8hrs in
my neck of the woods, and worse if the the day has multiple outages,
as the battery never gets a chance to fully recharge.<br>
<br>
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<p class="MsoNormal">Are the modems with backup power designed
to operate for a specified period of time without power and if
so, for how long and how was that duration identified?</p>
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<br>
All comes down to how large the battery is, and how much the site's
demand is.<br>
<br>
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<p class="MsoNormal">If those with backup power do maintain
Internet access during a power outage, do they lose that
access if the power outage extends beyond a certain time?
I.e., does the ISP network equipment go offline at some point
in time due to batteries being drained and not having power
generation capabilities?</p>
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<br>
Again, down to battery and demand sizing.<br>
<br>
The other issue here is if there are multiple outages in the same
24hr period, the ability for the operator to sustain uptime
decreases, because the battery never gets a full charge again.<br>
<br>
Mark.<br>
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