Re: CenturyLink

[Shawn L via NANOG <nanog () nanog org>]

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

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