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INFORMATIONAL
Network Working Group: D. Gowin
Request for Comments: 1708 Vitro Corp.
Category: Informational October 1994
NTP PICS PROFORMA For the Network Time Protocol Version 3
Status of this Memo
This memo provides information for the Internet community. This memo does not specify an Internet standard of any kind. Distribution of this memo is unlimited.
Abstract
This RFC describes a PICS Proforma translated into an Internet acceptable form. The Original document was developed according to ISO 9646 for conformance test purposes. This document is intended for both developers and users of the NTP (Network Time Protocol). This document contains specific information and performance characteristics for the use of NTP within the context of Internet usage. It is suggested, that users wishing to use the synchronization capabilities of the Internet abide by the characteristics set within this document.
For more information please contact Dr. David Mills at Mills@udel.edu or review RFC 1305 for more information.
To evaluate conformance of a particular implementation, it is necessary to have a statement of the capabilities and options that have been implemented for a given protocol. Such a statement is called a Protocol Implementation Conformance Statement (PICS).
This document provides the PICS proforma for the Network Time Protocol (NTP) in compliance with the relevant requirements, and in accordance with the relevant guidance, given in ISO/IEC 9646-2.
ISO/IEC 9646-2 1990, Information technology - Open systems
interconnection - Conformance testing methodology and framework - Part 2: Abstract test suite specification.
RFC 1305 Network Time Protocol (Version 3) -
Specification, Implementation and Analysis - David L. Mills, University of Delaware - March 1992.
The supplier of a protocol implementation which is claimed to conform to NTP version 3 is required to complete a copy of the PICS proforma provided in this document and is required to provide the information necessary to identify both the supplier and the implementation.
Gowin [Page 2]
RFC 1708 NTP PICS Proforma October 19946. COPYRIGHT
Copyright release for PICS proforma. Users of this RFC may freely reproduce the PICS proforma in this document so that it can be used for its intended purpose and may further publish the completed PICS.
7. IMPLEMENTATION IDENTIFICATION
+=======================================+=======================+
| SUPPLIER | |
| | |
+---------------------------------------+-----------------------+
| | |
| CONTACT POINT FOR | |
| QUERIES ABOUT THE PICS | |
| | |
+---------------------------------------+-----------------------+
| | |
| IMPLEMENTATION NAME | |
| AND VERSION | |
| | |
+---------------------------------------+-----------------------+
| | |
| OTHER INFORMATION | |
| NECESSARY FOR FULL | |
| IDENTIFICATION - e.g. | |
| NAME AND VERSION | |
| FOR MACHINES AND/OR | |
| OPERATING SYSTEMS; | |
| SYSTEM NAME | |
| | |
| | |
| | |
+=======================================+=======================+
8. NETWORK TIME PROTOCOL PICS PROFORMA8.1 DATA FORMATS
Item No. NTP Requirements Reference Status Support ================================================================= 8.1.01 64 bit time
stamp 3.1 m Y[] N[]
Gowin [Page 3]
RFC 1708 NTP PICS Proforma October 19948.2 STATE VARIABLES AND PARAMETERS8.2.1 COMMON VARIABLES
Item No. NTP Requirements Reference Status Support ================================================================= 8.2.1.01 Peer Address 3.2.1 m Y[] N[] 8.2.1.02 Peer Port 3.2.1 m Y[] N[] 8.2.1.03 Host Address 3.2.1 m Y[] N[] 8.2.1.04 Host Port 3.2.1 m Y[] N[] 8.2.1.05 Leap Indicator 3.2.1 m Y[] N[] 8.2.1.06 Mode 3.2.1 m Y[] N[] 8.2.1.07 Stratum 3.2.1 m Y[] N[] 8.2.1.08 Poll 3.2.1 m Y[] N[] 8.2.1.09 Precision 3.2.1 m Y[] N[] 8.2.1.10 Root Delay 3.2.1 m Y[] N[] 8.2.1.11 Root Dispersion 3.2.1 m Y[] N[] 8.2.1.12 Reference Clock
Identifier 3.2.1 m Y[] N[]
8.2.1.13 Reference
Timestamp 3.2.1 m Y[] N[]
8.2.1.14 Originate
Timestamp 3.2.1 m Y[] N[]
8.2.1.15 Receive
Timestamp 3.2.1 m Y[] N[]
8.2.1.16 Transmit
Timestamp 3.2.1 m Y[] N[]
Item No. NTP Requirements Reference Status Support ================================================================= 8.2.2.01 Local Clock 3.2.2 m Y[] N[] 8.2.2.02 Clock Source 3.2.2 m Y[] N[]
Item No. NTP Requirements Reference Status Support ================================================================= 8.2.3.01 Configured Bit 3.2.3 m Y[] N[] 8.2.3.02 Update Timestamp 3.2.3 m Y[] N[] 8.2.3.03 Reachability
Register 3.2.3 m Y[] N[]
8.2.3.04 Peer Timer 3.2.3 m Y[] N[]
Gowin [Page 4]
RFC 1708 NTP PICS Proforma October 19948.2.4 PACKET VARIABLES
Item No. NTP Requirements Reference Status Support ================================================================= 8.2.4.01 Version Number 3.2.4 m Y[] N[]
Item No. NTP Requirements Reference Status Support ================================================================= 8.2.9.4.01 Clock Update 3.4.5 m Y[] N[]
Item No. NTP Requirements Reference Status Support ================================================================= 8.2.9.6.01 Initialization 3.4.7.1 m Y[] N[] 8.2.9.6.02 Authentication 3.4.7.1 o Y[] N[]
Item No. NTP Requirements Reference Status Support ================================================================= 8.2.9.9.01 Clock Instantiation 3.4.7.4 m Y[] N[]
Item No. NTP Requirements Reference Status Support ================================================================= 8.2.9.10.01 Clear Proc. 3.4.8 m Y[] N[]
Item No. NTP Requirements Reference Status Support ================================================================= 8.2.9.11.01 Poll Update 3.4.9 m Y[] N[]
Item No. NTP Requirements Reference Status Support ================================================================= 8.2.9.12.01 Distance Proc. 3.5 m Y[] N[]
8.3 FILTERING AND SELECTION ALGORITHMS8.3.1 CLOCK FILTER PROCEDURE
Item No. NTP Requirements Reference Status Support ================================================================= 8.3.1.01 Clock Filter 4.1 o Y[] N[]
Item No. NTP Requirements Reference Status Support =================================================================
8.5.01 Leap Indicator
is a 2 bit code App. A m Y[] N[]
8.5.02 Version Number
is a 3 bit integer App. A m Y[] N[]
8.5.03 Mode
is a 3 bit integer App. A m Y[] N[]
8.5.04 Stratum is an 8
bit integer App. A m Y[] N[]
8.5.05 Poll is an 8 bit
signed integer App. A m Y[] N[]
8.5.06 Precision is an
8 bit signed integer App. A m Y[] N[]
8.5.07 Root Delay is a 32 bit signed
fixed-point number App. A m Y[] N[]
8.5.08 Root Dispersion is a 32 bit
fixed-point number App. A m Y[] N[]
8.5.09 Reference Identifier is a 4
octet, left justified, zero
padded ASCII string App. A m Y[] N[]
8.5.10 Reference Timestamp is a 64
bit timestamp format App. A m Y[] N[]
8.5.11 Originate Timestamp is a 64
bit timestamp format App. A m Y[] N[]
8.5.12 Receive Timestamp is a 64
bit timestamp format App. A m Y[] N[]
8.5.13 Transmit Timestamp is a 64
bit timestamp format App. A m Y[] N[]
8.5.14 Authenticator 96 bits App. A o Y[] N[]
Gowin [Page 10]
RFC 1708 NTP PICS Proforma October 19948.6 NTP Control Messages8.6.1 NTP Control Message Header Format
Item No. NTP Requirements Reference Status Support ================================================================= 8.6.1.01 Leap Indicator
is a 2 bit code App. B.1 c1 Y[] N[]
8.6.1.02 Version Number
is a 3 bit integer App. B.1 c1 Y[] N[]
8.6.1.03 Mode is a 3 bit
integer App. B.1 c1 Y[] N[]
8.6.1.04 Response bit is
a 1 Bit field App. B.1 c1 Y[] N[]
8.6.1.05 Error bit is a 1
bit field App. B.1 c1 Y[] N[]
8.6.1.06 More bit is a 1
bit field App. B.1 c1 Y[] N[]
Item No. NTP Requirements Reference Status Support ================================================================= 8.6.1.07 Operation Code
is a 5 bit integer App. B.1 c1 Y[] N[]
8.6.1.08 Sequence is a 16
bit integer App. B.1 c1 Y[] N[]
8.6.1.09 Status is a 16
bit code App. B.1 c1 Y[] N[]
8.6.1.10 Association ID
is a 16 bit integer App. B.1 c1 Y[] N[]
8.6.1.11 Offset is a 16
bit integer App. B.1 c1 Y[] N[]
8.6.1.12 Count is a 16
bit integer App. B.1 c1 Y[] N[]
8.6.1.13 Data is a
maximum of 468 octets App. B.1 c1 Y[] N[]
8.6.1.14 Authenticator
96 bits App. B.1 c1 Y[] N[]
c1: IF control messages are used THEN m ELSE o.
Gowin [Page 11]
RFC 1708 NTP PICS Proforma October 19948.6.1.1 NTP Control Message Required Values
Item No. NTP Requirements Reference Status Support ================================================================= 8.6.1.1.01 Leap Indicator = 00 App. B.1 c1 Y[] N[] 8.6.1.1.02 Version Number = 3 App. B.1 c1 Y[] N[] 8.6.1.1.03 Mode = 6 App. B.1 c1 Y[] N[]
Item No. NTP Requirements Reference Status Support ================================================================= 8.6.2.1.01 Leap Indicator
is a 2 bit code App.B.2.1 c1 Y[] N[]
8.6.2.1.02 Clock Source is
a 6 bit integer App.B.2.1 c1 Y[] N[]
8.6.2.1.03 System Event Counter
is a 4 bit integer App.B.2.1 c1 Y[] N[]
8.6.2.1.04 System Event Code
is a 4 bit integer App.B.2.1 c1 Y[] N[]
Item No. NTP Requirements Reference Status Support ================================================================= 8.6.2.2.01 Peer Status is a
5 bit code App.B.2.2 c1 Y[] N[]
8.6.2.2.02 Peer Selection
is a 3 bitinteger App.B.2.2 c1 Y[] N[]
8.6.2.2.03 Peer Event Counter
is a 4 bit integer App.B.2.2 c1 Y[] N[]
8.6.2.2.04 Peer Event Code
is a 4 bit integer App.B.2.2 c1 Y[] N[]
c1:IF control messages are used THEN m ELSE o.
Gowin [Page 12]
RFC 1708 NTP PICS Proforma October 19948.6.2.3 Clock Status Word
Item No. NTP Requirements Reference Status Support ================================================================= 8.6.2.3.01 Clock Status is
an 8 bit integer App.B.2.3 c1 Y[] N[]
8.6.2.3.02 Clock Event Code
is an 8 bit integer App.B.2.3 c1 Y[] N[]
Item No. NTP Requirements Reference Status Support ================================================================= 8.6.2.4.01 Error Status is
an 8 bit integer App.B.2.4 c1 Y[] N[]
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