nanog mailing list archives
Re: NTP Server
From: todd glassey <tglassey () earthlink net>
Date: Sun, 24 Oct 2010 16:35:11 -0700
On 10/24/2010 2:14 PM, Steven Hill wrote:
On Sun, 24 Oct 2010, Christopher Morrow wrote:How do you knew that your local NTP server knew what time it is? (for sure)
Because you got the time service from an authoritative source who did the rest of the work to make sure that the NTP evidence practice worked. This means you are a partner of the time-provider and you do both client and peering type time-service events. It also means you address the issues of certainty and the need to say absolutely what time it is in the US or where ever at any given instance. Let me be blunt... The NTP Evidence Model was designed for a totally unrelated purpose and doesn't make the needed hurdle today. In fact there are a number of related NTP Services necessary to create a complete service model and not all of them are compatible with running a NTP Service as a daemon unless you can do time-queries through NTPDATE or other tools on separate ports. Todd Glassey
this question is a trap.Quite. We had 2 HP 5071s,(+ several GPS standards) and at the time being the definition of a second, either could be correct at any time. When I took a moment to think about it, and discovered both standards were correct, and yet disagreed, my brain fell out.
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Current thread:
- Re: NTP Server, (continued)
- Re: NTP Server Cutler James R (Oct 24)
- Re: NTP Server Steven Fischer (Oct 24)
- Re: NTP Server Peter Lothberg (Oct 24)
- Re: NTP Server todd glassey (Oct 24)
- Re: NTP Server Bret Clark (Oct 24)
- Re: NTP Server Joel Jaeggli (Oct 24)
- Re: NTP Server Christopher Morrow (Oct 24)
- Re: NTP Server Tony Finch (Oct 25)
- RE: NTP Server Brandon Kim (Oct 24)
- Re: NTP Server Jack Carrozzo (Oct 24)
- RE: NTP Server Brandon Kim (Oct 24)
- Re: NTP Server David Andersen (Oct 24)
- RE: NTP Server George Bonser (Oct 24)
- RE: NTP Server Peter Beckman (Oct 24)
- RE: NTP Server George Bonser (Oct 24)
- Re: NTP Server Joe Greco (Oct 25)