nanog mailing list archives
Re: Need trusted NTP Sources
From: Lyle Giese <lyle () lcrcomputer net>
Date: Sun, 09 Feb 2014 15:19:09 -0600
Look back in the archives and see the problems that erupted when one of the big guys rebooted and came on line with bad time(tock.usno.navy.mil in Nov of 2012). It was talked about in Outages and other lists at the time it happened.
On 02/09/14 14:56, Saku Ytti wrote:
On (2014-02-09 15:45 -0500), Jay Ashworth wrote:If I'm locked to 2 coherent upstreams and one goes insane, I'm going to know which one it is, because the other one will still match what I already have running, no? Or do I understand NTP less well than I think?I don't think you can reasonably tell which of the two is the false ticker. Andriy says your PC would blindly follow one who is in more agreement with your local lock, and PC's have terrible oscillators (I don't know why, 5EUR would buy LOT better oscillator).
Current thread:
- Re: Need trusted NTP Sources, (continued)
- Re: Need trusted NTP Sources Jay Ashworth (Feb 08)
- Re: Need trusted NTP Sources Jay Ashworth (Feb 08)
- Re: Need trusted NTP Sources Saku Ytti (Feb 09)
- Re: Need trusted NTP Sources Andriy Bilous (Feb 09)
- Re: Need trusted NTP Sources Saku Ytti (Feb 09)
- Re: Need trusted NTP Sources Andriy Bilous (Feb 09)
- Re: Need trusted NTP Sources Jay Ashworth (Feb 09)
- Re: Need trusted NTP Sources Saku Ytti (Feb 09)
- Re: Need trusted NTP Sources Jay Ashworth (Feb 09)
- Re: Need trusted NTP Sources Saku Ytti (Feb 09)
- Re: Need trusted NTP Sources Lyle Giese (Feb 09)
- Re: Need trusted NTP Sources Jimmy Hess (Feb 09)
- Re: Need trusted NTP Sources Brett Frankenberger (Feb 09)
- Message not available
- Message not available
- Message not available
- Re: Need trusted NTP Sources Larry Sheldon (Feb 06)
- Message not available
- Message not available
- Re: Need trusted NTP Sources Larry Sheldon (Feb 06)
- Re: Need trusted NTP Sources Jay Ashworth (Feb 06)
- Message not available
- Message not available
- Message not available
- Message not available
- Message not available
- Re: Need trusted NTP Sources Larry Sheldon (Feb 06)
- Re: Need trusted NTP Sources Michael DeMan (Feb 06)
- Re: Need trusted NTP Sources Saku Ytti (Feb 06)