[195905] in North American Network Operators' Group
Re: Puerto Rico just lost internet?
daemon@ATHENA.MIT.EDU (Colin Johnston)
Fri Sep 22 04:32:48 2017
X-Original-To: nanog@nanog.org
From: Colin Johnston <colinj@gt86car.org.uk>
Date: Thu, 21 Sep 2017 16:27:05 +0100
In-Reply-To: <CA+LTh5VQXX0b2DaG4k=pmsQ9N+Ph=ewCMbc6JoqaXYMip1ZZtA@mail.gmail.com>
To: Mehmet Akcin <mehmet@akcin.net>
Cc: "nanog@nanog.org" <nanog@nanog.org>
Errors-To: nanog-bounces@nanog.org
one ripe atlas probe is still green though
Probe ID20057IPv4 ASNAS5786 <https://stat.ripe.net/AS5786>IPv4 =
Prefix136.145.0.0/16 <https://stat.ripe.net/136.145.0.0%2F16>IPv6 =
ASNAS65003 <https://stat.ripe.net/AS65003>IPv6 =
Prefix2607:2000:100:116::/64 =
<https://stat.ripe.net/2607%3A2000%3A100%3A116%3A%3A%2F64>CountryPRConnect=
ed since: 2017-09-12 16:17:06 UTC
> On 21 Sep 2017, at 05:26, Mehmet Akcin <mehmet@akcin.net> wrote:
>=20
> Things are getting only worst so far - most of the island is offline - =
see
> the screenshot or the link here live =
https://stat.ripe.net/PR#tabId=3Drouting
>=20
> On Wed, Sep 20, 2017 at 8:29 PM, Javier J <javier@advancedmachines.us>
> wrote:
>=20
>> Thank you for this info!
>>=20
>>=20
>> I think most of us kind of know there are backup power strategies in =
place
>> but this is very detailed and appreciated. The little communication I =
have
>> had with family on the island they tell me no internet, no cable tv, =
etc so
>> this timing is good to know for when the few cell towers that =
survived
>> start to go dark.
>>=20
>> - J
>>=20
>>=20
>>=20
>> On Wed, Sep 20, 2017 at 4:36 PM, Sean Donelan <sean@donelan.com> =
wrote:
>>=20
>>> On Wed, 20 Sep 2017, Javier J wrote:
>>>=20
>>>> How long usually till generators at cell sites run out of juice?
>>>>=20
>>>=20
>>> Rough, every provider is different, backup power hierarchy:
>>>=20
>>> Neighborhood pole boxes: 1-4 hours, batteries only. May be =
re-charged
>> with
>>> portable generators when safe to access area. There is likely severe
>>> physical damage to neighborhood lines.
>>>=20
>>> Cell towers: 8-12 hours battery. Some, not all, towers have a =
natural gas
>>> generator or 24 hours diesel generator
>>>=20
>>> Central offices and cable headends: 8-12 hours battery, 1-3 days =
diesel
>>> generators. Core, tandem, and hub sites usually have more backup.
>>>=20
>>> Major colocation data centers: <1 hour battery, 3-14 days diesel
>> generators
>>>=20
>>> Submarine cable landing points and satellite control stations: 24 =
hours
>>> battery, 30 days diesel generators
>>>=20
>>>=20
>>=20
