[ntpwg] I-D ACTION:draft-ietf-ntp-ntpv4-proto-05.txt
David L. Mills
mills at udel.edu
Mon May 14 18:15:30 PDT 2007
Brian,
Correct the equation and minor text on page 9: This is through Section
6. More to follow.
A timestamp T(t) represents either the UTC date or time offset from
UTC at running time t. Which meaning is intended should be clear
from the context. Let T(t) be the time offset, R(t) the frequency
offset, D(t) the ageing rate (first derivative of R(t) with respect
to t). Then, if T(t_0) is the UTC time offset determined at t = t_0,
the UTC time offset at time t is
T(t) = T(t_0) + R(t_0)(t-t_0) + 1/2 * D(t_0)(t-t_0)^2 + e,
where e is a stochastic error term discussed later in this document.
Brian Haberman wrote:
> All,
> This version of the protocol specification incorporates all
> comments received to date (to my knowledge). Please review. My plan is
> to start a working group last call on this document in the next week
> or so.
>
> Regards,
> Brian
>
>
> Internet-Drafts at ietf.org wrote:
>
>> A New Internet-Draft is available from the on-line Internet-Drafts
>> directories.
>> This draft is a work item of the Network Time Protocol Working Group
>> of the IETF.
>>
>> Title : Network Time Protocol Version 4 Protocol And Algorithms
>> Specification
>> Author(s) : J. Burbank, et al.
>> Filename : draft-ietf-ntp-ntpv4-proto-05.txt
>> Pages : 108
>> Date : 2007-5-11
>>
>> The Network Time Protocol (NTP) is widely used to synchronize
>> computer clocks in the Internet. This document describes NTP Version
>> 4 (NTPv4), which is backwards compatible with NTP Version 3 (NTPv3)
>> described in RFC 1305, as well as previous versions of the protocol.
>>
>> It includes a modified protocol header to accommodate the Internet
>> Protocol Version 6 address family. NTPv4 includes fundamental
>> improvements in the mitigation and discipline algorithms which extend
>> the potential accuracy to the tens of microseconds with modern
>> workstations and fast LANs. It includes a dynamic server discovery
>> scheme, so that in many cases specific server configuration is not
>> required. It corrects certain errors in the NTPv3 design and
>> implementation and includes an optional extension mechanism.
>>
>> A URL for this Internet-Draft is:
>> http://www.ietf.org/internet-drafts/draft-ietf-ntp-ntpv4-proto-05.txt
>
> _______________________________________________
> ntpwg mailing list
> ntpwg at support.ntp.org
> https://support.ntp.org/mailman/listinfo/ntpwg
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