User manual

6000-100AppA.fm Rev. C TimeVault™ User’s Manual A-91

NTP Version 3, NTPQ, and NTPDC

This appendix describes two NTP version 3 data formats:

• NTP version 3, per RFC-1305

• SNTP version 3, per RFC-2030

and query programs NTPQ and NTPDC.

All RFCs are published with approval of the Internet Activities Board, found on the

Internet by running any search engine and typing “RFC” in the search field (or

“RFC-####” if you have the number). Two such search engines can be found at the

following Internet addresses:

http://www.lycos.com/

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A.1 NTP V 3.0 Data Format per RFC-1305

A.1.1 NTP Data Packet

The layout of the NTP data packet information following the UDP header is shown below,

and each element is described on the following pages:

TimeVault fully supports NTP version 4, (backwards compatible with NTP version 2,

RFC-1119, and version 3, RFC-1305), and SNTP as per RFC 2030.