nanog mailing list archives
Re: Need trusted NTP Sources
From: Saku Ytti <saku () ytti fi>
Date: Sun, 9 Feb 2014 22:30:33 +0200
On (2014-02-09 15:16 -0500), Jay Ashworth wrote:
Then either of two servers not giving incorrect time is 0.99**2 i.e. 98%, so two NTP servers would be 1% point more likely to give incorrect time than one over 1 year time.That's only true if the two devices have common failure modes, though, is it not?
No, we can assume arbitrary fault which causes NTP to output bad time. With two NTP servers it's more likely that any one of them will start doing that than with one alone. And if any of the two start doing it, you don't know which one. -- ++ytti
Current thread:
- You need a VLAN to the foot of NIST ITS services - no problem - we got you covered. Re: Need trusted NTP Sources, (continued)
- You need a VLAN to the foot of NIST ITS services - no problem - we got you covered. Re: Need trusted NTP Sources TGLASSEY (Feb 07)
- Re: Need trusted NTP Sources Bryan Seitz (Feb 07)
- Re: Need trusted NTP Sources Majdi S. Abbas (Feb 08)
- 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)
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- Re: Need trusted NTP Sources Larry Sheldon (Feb 06)
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- Re: Need trusted NTP Sources Larry Sheldon (Feb 06)
- Re: Need trusted NTP Sources Jay Ashworth (Feb 06)
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- Re: Need trusted NTP Sources Larry Sheldon (Feb 06)