[time-nuts] Cloudflare

[Bob kb8tq]

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 couple. 

Yes there are all sorts of assumptions down in the bowels of that suggestion.
None of them may be correct. If so…. sorry about that !!!

There might seem to be an implicit suggestion that they be GPS/ GNSS based.
Actually a mix of time sources would be better than all of them depending on
one source. GNSS is nice because one gizmo could be deployed anywhere in
the world. Doing things off of MSF / WWVB etc gets into region specific configuration
(and possibly region specific hardware). 

Bob

> On Jun 22, 2019, at 11:30 AM, Aanchal Malhotra <aanchal4 at bu.edu> wrote:
> 
> Hi,
> 
> On Fri, Jun 21, 2019 at 6:07 PM Bob kb8tq <kb8tq at n1k.org> 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 negotiate permission
>> to use them.”
>> to source the root time for the system. I would have thought that some
>> sort of combo
>> of on site and off site sources would be at the “top of the tree”.
>> 
> 
> CF does not own their 185 datacenters across the globe. These are rented
> spaces. Some are not affable to GPS setup (no rooftop access or GPS farms
> etc.). Even if they were there is extra cost for GPS setup, rent,
> maintenance,  requires traveling to remote physical locations if something
> goes wrong and more... CF has 185 datacenters and so the cost and effort
> accumulates. Using external stratum 1 servers was a more reasonable option.
> CF made sure that their servers are connected to the closest available
> authenticated S1s.
> Buying their own S1s is definitely on the table.
> 
> Best,
> Aanchal.
> 
>> 
>> Bob
>> 
>>> On Jun 21, 2019, at 2:20 PM, Marco Davids via time-nuts <
>> time-nuts at lists.febo.com> wrote:
>>> 
>>> Opinions, anyone?
>>> 
>>> https://blog.cloudflare.com/secure-time/amp/
>>> 
>>> ("Introducing time.cloudflare.com")
>>> 
>>> --
>>> Marco
>>> 
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