rfc1708.txt
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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.
1. INTRODUCTION
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).
2. SCOPE
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.
3. REFERENCE DOCUMENTS
ISO/IEC 9646-1 1990, Information technology - Open systems
interconnection - Conformance testing
methodology and framework - Part 1: General
concepts.
Gowin [Page 1]
RFC 1708 NTP PICS Proforma October 1994
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.
4. DEFINITIONS
This document uses the following terms defined in ISO/IEC 9646-1:
a) PICS proforma;
b) Protocol Implementation Conformance Statement (PICS);
c) Static conformance review.
4.1 SPECIAL SYMBOLS
The additional symbols have been identified for use in this document:
m Mandatory field/function
o.# Optional field/function
c# Conditional field/function
# Refers to a note # below the table
x Prohibited use
n/a Not applicable
Y[] Indicates the item is implemented
N[] Indicates the item is not implemented
5. INSTRUCTIONS FOR COMPLETION OF PICS
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 1994
6. 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 PROFORMA
8.1 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 1994
8.2 STATE VARIABLES AND PARAMETERS
8.2.1 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[]
8.2.2 SYSTEM VARIABLES
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[]
8.2.3 PEER VARIABLES
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 1994
8.2.4 PACKET VARIABLES
Item No. NTP Requirements Reference Status Support
=================================================================
8.2.4.01 Version Number 3.2.4 m Y[] N[]
8.2.5 CLOCK FILTER VARIABLES
Item No. NTP Requirements Reference Status Support
=================================================================
8.2.5.01 Filter Register 3.2.5 m Y[] N[]
8.2.5.02 Valid Data
Counter 3.2.5 m Y[] N[]
8.2.5.03 Offset 3.2.5 m Y[] N[]
8.2.5.04 Delay 3.2.5 m Y[] N[]
8.2.5.05 Dispersion 3.2.5 m Y[] N[]
8.2.6 AUTHENTICATION VARIABLES
Item No. NTP Requirements Reference Status Support
=================================================================
8.2.6.01 Authentication
Enable Bit 3.2.6 c1 Y[] N[]
8.2.6.02 Authenticated
Bit 3.2.6 c1 Y[] N[]
8.2.6.03 Key Identifier 3.2.6 c1 Y[] N[]
8.2.6.04 Cryptographic
Keys 3.2.6 c1 Y[] N[]
8.2.6.05 Crypto Checksum 3.2.6 c1 Y[] N[]
c1: IF authentication is used THEN m ELSE o.
8.2.7 PARAMETER VALUES
Item No. NTP Requirements Reference Status Support
=================================================================
8.2.7.01 Version Number = 3 3.2.7 c1 Y[] N[]
8.2.7.02 NTP Port = 123 3.2.7 c1 Y[] N[]
8.2.7.03 Max Stratum = 15 3.2.7 c1 Y[] N[]
8.2.7.04 Max Clock Age =
86,400 sec. 3.2.7 c1 Y[] N[]
8.2.7.05 Max Skew = 1 sec. 3.2.7 c1 Y[] N[]
8.2.7.06 Max Distance = 1 sec. 3.2.7 c1 Y[] N[]
8.2.7.07 Min Polling Interval =
6(64 sec.) 3.2.7 c1 Y[] N[]
8.2.7.08 Max Polling Interval =
10(1024 sec.) 3.2.7 c1 Y[] N[]
8.2.7.09 Min Select Clock = 1 3.2.7 c1 Y[] N[]
Gowin [Page 5]
RFC 1708 NTP PICS Proforma October 1994
8.2.7.10 Max Select Clock = 10 3.2.7 c1 Y[] N[]
8.2.7.11 Min Dispersion =
0.01 sec. 3.2.7 c1 Y[] N[]
8.2.7.12 Max Dispersion =
16 sec. 3.2.7 c1 Y[] N[]
8.2.7.13 Reachability Reg
Size = 8 3.2.7 c1 Y[] N[]
8.2.7.14 Filter Size = 8 3.2.7 c1 Y[] N[]
8.2.7.15 Filter Weight = 1/2 3.2.7 c1 Y[] N[]
8.2.7.16 Select Weight = 3/4 3.2.7 c1 Y[] N[]
c1: IF implementation is intended for use on the Internet
THEN m ELSE o.
8.2.8 MODES OF OPERATION
Item No. NTP Requirements Reference Status Support
=================================================================
8.2.8.01 Symmetric Active 3.3 o.1 Y[] N[]
8.2.8.02 Symmetric Passive 3.3 o.1 Y[] N[]
8.2.8.03 Client 3.3 o.1 Y[] N[]
8.2.8.04 Server 3.3 o.1 Y[] N[]
8.2.8.05 Broadcast 3.3 o.1 Y[] N[]
o.1:At least one mode must be implemented.
8.2.9 EVENT PROCESSING
8.2.9.1 TRANSMIT PROCEDURE
Item No. NTP Requirements Reference Status Support
=================================================================
8.2.9.1.01 Transmit Procedure 3.4.2 m Y[] N[]
8.2.9.1.02 Authentication 3.4.2 o Y[] N[]
8.2.9.2 RECEIVE PROCEDURE
Item No. NTP Requirements Reference Status Support
=================================================================
8.2.9.2.01 Receive Procedure 3.4.3 m Y[] N[]
8.2.9.2.02 Control Messages 3.4.3 o.1 Y[] N[]
8.2.9.2.03 Authentication 3.4.3 o Y[] N[]
o.1:If implemented then section 8.6 must be completed.
Gowin [Page 6]
RFC 1708 NTP PICS Proforma October 1994
8.2.9.3 PACKET PROCEDURE
Item No. NTP Requirements Reference Status Support
=================================================================
8.2.9.3.01 Packet Procedure 3.4.4 m Y[] N[]
8.2.9.3.02 Authentication 3.4.4 o Y[] N[]
8.2.9.4 CLOCK UPDATE PROCEDURE
Item No. NTP Requirements Reference Status Support
=================================================================
8.2.9.4.01 Clock Update 3.4.5 m Y[] N[]
8.2.9.5 PRIMARY CLOCK PROCEDURE
Item No. NTP Requirements Reference Status Support
=================================================================
8.2.9.5.01 Primary Clock 3.4.6 m Y[] N[]
8.2.9.6 INITIALIZATION PROCEDURES
Item No. NTP Requirements Reference Status Support
=================================================================
8.2.9.6.01 Initialization 3.4.7.1 m Y[] N[]
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