nanog mailing list archives
Re: Need trusted NTP Sources
From: Jay Ashworth <jra () baylink com>
Date: Sun, 9 Feb 2014 15:16:25 -0500 (EST)
----- Original Message -----
From: "Saku Ytti" <saku () ytti fi>
In the architecture I described, though, is it really true that the odds of the common types of failure are higher than with only one?I think so, lets assume arbitrarily that probability of NTP server not starting to give incorrect time is 99% over 1 year time. 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? -- Jay R. Ashworth Baylink jra () baylink com Designer The Things I Think RFC 2100 Ashworth & Associates http://www.bcp38.info 2000 Land Rover DII St Petersburg FL USA BCP38: Ask For It By Name! +1 727 647 1274
Current thread:
- Re: Need trusted NTP Sources, (continued)
- Re: Need trusted NTP Sources Anthony Williams (Feb 07)
- 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)