Tim Shoppa writes:
> I have been observing time.cloudflare.com latency and accuracy the past 3
> days.
>From my home network it is actually pretty bad compared to some other
servers. It's likely the network and not the server, though.
> It is a stratum 3 server, so folks might think that it's
I have been observing time.cloudflare.com latency and accuracy the past 3
days.
It is a stratum 3 server, so folks might think that it's not as good as a
Stratum 1 or Stratum 2.
BUT... it has exceptionally low latency and it seems very likely it's
Stratum 3 because it is fed by a well-maintained
I bought one of these
(https://www.ebay.com/itm/GPSDO-10M-Output-GPS-Disciplined-Oscillator-Clock-Sinusoidal-Wave-RS232-US-SHIP/172933685909?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2057872.m2749.l2649)
a couple of months ago. I only have a 9-digit frequency counter to measure it
with, and the
kb...@n1k.org said:
> Given the relatively low cost of a GPS based âStratum 1â NTP, itâs not
> real
> clear why (at the end of the paper) they go off and âexchange emails
> individually with the organizations that run stratum 1 servers, as well as
> negotiate permission to use them.â
[Sorry about going off-topic. I'll stop now.]
On Sat, Jun 22, 2019 at 3:42 AM Hal Murray wrote:
> > 2) Anycast.
>
> What does anycast mean when DNS returns 2 IPv4 addresses? Is the client
> expected to do anything other than use the first address returned?
>
No. The name is a *server*
On Sat, Jun 22, 2019 at 11:02 AM Didier Juges wrote:
> Wow, what a well written article.
>
Thanks!
>
> I have been using Cloudflare's DNS service since it was introduced.
> Absolutely no issues whatsoever. These people are top notch.
> I anticipate this new service will be as well.
>
Agreed.
hi
On Fri, Jun 21, 2019 at 11:01 PM Sanjeev Gupta wrote:
> Bob,
>
> The hardware is cheap. The software is free. The skills to deploy are
> widely available. But...
>
> A cable run from your rack in the middle of the datacenter, through to the
> roof, is either impossible or thousands of
Hi
I’m not advocating that you must have 185 “in house Stratum 1 devices. I’m
really saying that having a limited number of devices that you have full control
over *is* a good idea. Is that three or is it thirty? Obviously the more the
better, but
the big boost comes from at least having a
On Sat, Jun 22, 2019 at 6:00 AM Bob Bownes wrote:
>
> Most of the good data centers I’ve used either offer a connection to a
> stratum 1 server or are more than happy to put a antenna on the roof. Many
> offer microwave as a third redundant circuit path, which requires an
> antenna. All for a
Hi,
On Fri, Jun 21, 2019 at 6:07 PM Bob kb8tq wrote:
> Hi
>
> Given the relatively low cost of a GPS based “Stratum 1” NTP, it’s not
> real clear
> why (at the end of the paper) they go off and “exchange emails
> individually with the
> organizations that run stratum 1 servers, as well as
Wow, what a well written article.
I have been using Cloudflare's DNS service since it was introduced.
Absolutely no issues whatsoever. These people are top notch.
I anticipate this new service will be as well.
Didier KO4BB
On Fri, Jun 21, 2019, 3:03 PM Marco Davids via time-nuts <
Hi
Sorry for the double post
Actually there *is* another answer:
Run an atomic clock.
That sounds exotic and really expensive. In fact they are a sub $1,000 sort
of item in bulk (like hundreds). A Rubidium based device will hold “rate”
to under a nanosecond per second pretty much
>A cable run from your rack in the middle of the datacenter, through to the
>roof, is either impossible or thousands of dollars and weeks of planning.
I've done this 4 times now for GPS antennas connected to NTP servers.
I agree with the thousands of dollars (2K to 4K for cable runs of
around 50
Hi
Yup, I’ve run into that with GPS based gear in the past. We’re in the
sub-sub-sub
basement and the roof is 123 stories straight up ….
One traditional answer is the “run to the window” approach. You don’t get GPS
all
the time, but you get it often enough to be useful. If you are indeed
tic-...@bodosom.net said:
> Your questions are answered in their blog post.
> 1) No smear.
Thanks. I found it via google. It's 3 clicks away from the blog post.
In case anybody wants to get there. Start here:
https://blog.cloudflare.com/secure-time/amp/
Scroll down to "Use it", the next
Most of the good data centers I’ve used either offer a connection to a stratum
1 server or are more than happy to put a antenna on the roof. Many offer
microwave as a third redundant circuit path, which requires an antenna. All for
a price, of course.
When I worked for an ILEC, many moons
Bob,
The hardware is cheap. The software is free. The skills to deploy are
widely available. But...
A cable run from your rack in the middle of the datacenter, through to the
roof, is either impossible or thousands of dollars and weeks of planning.
Data centers can run wires within the
On Fri, Jun 21, 2019 at 9:12 PM Hal Murray wrote:
You should probably setup another web page with just the technical details.
What are you going to do about leap seconds? Smear or not?
DNS for time.cloudflare.com gives 2 IPv4 addresses and 2 IPv6 addresses.
Are
they all equivalent in terms of
> Would love to have the feedback :)
Looks good. Thanks.
You should probably setup another web page with just the technical details.
What are you going to do about leap seconds? Smear or not?
DNS for time.cloudflare.com gives 2 IPv4 addresses and 2 IPv6 addresses. Are
they all equivalent
ailto:time-nuts-boun...@lists.febo.com] On Behalf Of Marco
Davids via time-nuts
Sent: 21 June 2019 19:21
To: time-nuts@lists.febo.com
Cc: Marco Davids
Subject: [time-nuts] Cloudflare
Opinions, anyone?
https://blog.cloudflare.com/secure-time/amp/
("Introducing time.cloudflare.
I don't know anything beyond what Is in the press release, but Cloudflare
generally does good stuff. Their work on the secure protocol is great. Looking
forward to having it supported broadly.
I wouldn't expect the quality of the time from their NTP system to be notably
different from any
Hi
Given the relatively low cost of a GPS based “Stratum 1” NTP, it’s not real
clear
why (at the end of the paper) they go off and “exchange emails individually
with the
organizations that run stratum 1 servers, as well as negotiate permission to
use them.”
to source the root time for the
On Fri, Jun 21, 2019 at 4:03 PM Marco Davids via time-nuts <
time-nuts@lists.febo.com> wrote:
> Opinions, anyone?
>
> https://blog.cloudflare.com/secure-time/amp/
>
> ("Introducing time.cloudflare.com")
>
Would love to have the feedback :)
>
> --
> Marco
>
>
Opinions, anyone?
https://blog.cloudflare.com/secure-time/amp/
("Introducing time.cloudflare.com")
--
Marco
signature.asc
Description: OpenPGP digital signature
___
time-nuts mailing list -- time-nuts@lists.febo.com
To unsubscribe, go to
24 matches
Mail list logo
