CenturyLink

Sun Dec 30 14:39:53 UTC 2018

Speaking of GPS-enabled NTP appliances, etc. wondering what hardware people are using for this.

thanks

-----Original Message-----
From: "Raymond Burkholder" <ray at oneunified.net>
Sent: Saturday, December 29, 2018 12:01pm
To: "Matthew Huff" <mhuff at ox.com>, "list at satchell.net" <list at satchell.net>, "nanog at nanog.org" <nanog at nanog.org>
Subject: Re: CenturyLink

On 2018-12-29 7:51 a.m., Matthew Huff wrote:
> We have two stratum-1 servers synced with GPS and a PTP feed from a provider that also provides PTP to market data systems, but we still have to monitor drift between system time and NIST time. Don't ask for the logic behind it, it's a regulation, not a technical requirement.
>
On one occasion, due to bad firmware or a configuration issue, I have 
seen GPS stratum 1 diverge from NTP.  It was somewhat eye brow raising 
to the company.  My NTP monitored servers were shown to be diverging 
their GPS/NTP, but after looking at twice or thrice, it was the other 
way around.

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