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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[]
+ 8.2.9.6.02 Authentication 3.4.7.1 o Y[] N[]
+
+8.2.9.7 INITIALIZATION INSTANTIATION PROCEDURE
+
+ Item No. NTP Requirements Reference Status Support
+ =================================================================
+ 8.2.9.7.01 Initialization
+ Instantiation 3.4.7.2 m Y[] N[]
+ 8.2.9.7.02 Authentication 3.4.7.2 o Y[] N[]
+
+8.2.9.8 RECEIVE INSTANTIATION PROCEDURE
+
+ Item No. NTP Requirements Reference Status Support
+ =================================================================
+ 8.2.9.8.01 Receive Instantiation 3.4.7.3 m Y[] N[]
+ 8.2.9.8.02 Authentication 3.4.7.3 o Y[] N[]
+
+8.2.9.9 PRIMARY CLOCK INSTANTIATION PROCEDURE
+
+ Item No. NTP Requirements Reference Status Support
+ =================================================================
+ 8.2.9.9.01 Clock Instantiation 3.4.7.4 m Y[] N[]
+
+
+
+
+
+Gowin [Page 7]
+
+RFC 1708 NTP PICS Proforma October 1994
+
+
+8.2.9.10 CLEAR PROCEDURE
+
+ Item No. NTP Requirements Reference Status Support
+ =================================================================
+ 8.2.9.10.01 Clear Proc. 3.4.8 m Y[] N[]
+
+8.2.9.11 POLL UPDATE PROCEDURE
+
+ Item No. NTP Requirements Reference Status Support
+ =================================================================
+ 8.2.9.11.01 Poll Update 3.4.9 m Y[] N[]
+
+8.2.9.12 SYNCHRONIZATION DISTANCE PROCEDURE
+
+ Item No. NTP Requirements Reference Status Support
+ =================================================================
+ 8.2.9.12.01 Distance Proc. 3.5 m Y[] N[]
+
+8.3 FILTERING AND SELECTION ALGORITHMS
+
+8.3.1 CLOCK FILTER PROCEDURE
+
+ Item No. NTP Requirements Reference Status Support
+ =================================================================
+ 8.3.1.01 Clock Filter 4.1 o Y[] N[]
+
+8.3.2 CLOCK SELECTION PROCEDURE
+
+ Item No. NTP Requirements Reference Status Support
+ =================================================================
+ 8.3.2.01 Clock Selection
+ Procedure 4.2 o Y[] N[]
+ 8.3.2.02 Intersection Algorithm 4.2.1 c1 Y[] N[]
+ 8.3.2.03 Clustering Algorithm 4.2.2 c1 Y[] N[]
+
+ c1: IF Clock Selection Procedure implemented THEN m ELSE o.
+
+8.4 LOCAL CLOCKS
+
+ Item No. NTP Requirements Reference Status Support
+ =================================================================
+ 8.4.01 Logical Clock 5 m Y[] N[]
+
+
+
+
+
+
+
+
+
+Gowin [Page 8]
+
+RFC 1708 NTP PICS Proforma October 1994
+
+
+8.4.1 FUZZBALL LOCAL CLOCK IMPLEMENTATIONS
+
+8.4.1.1 CRYSTAL OSCILLATOR BASED IMPLEMENTATION PARAMETER VALUES
+
+ Item No. NTP Requirements Reference Status Support
+ =================================================================
+ 8.4.1.1.01 Adjustment Interval =
+ 4 sec. 5.1 c1 Y[] N[]
+ 8.4.1.1.02 PPS Timeout = 60 sec. 5.1 c1 Y[] N[]
+ 8.4.1.1.02 Step Timeout =
+ 900 sec. 5.1 c1 Y[] N[]
+ 8.4.1.1.02 Maximum Aperture =
+ q128 ms 5.1 c1 Y[] N[]
+ 8.4.1.1.03 Frequency Weight = 16 5.1 c1 Y[] N[]
+ 8.4.1.1.04 Phase Weight = 8 5.1 c1 Y[] N[]
+ 8.4.1.1.05 Compliance Weight = 13 5.1 c1 Y[] N[]
+ 8.4.1.1.06 Compliance Maximum = 4 5.1 c1 Y[] N[]
+ 8.4.1.1.07 Compliance
+ Multiplier = 4 5.1 c1 Y[] N[]
+
+ c1:IF implementing a fuzzball using a crystal oscillator
+ based local clock THEN m ELSE o.
+
+8.4.1.2 MAIN SYSTEM CLOCK IMPLEMENTATION PARAMETER VALUES
+
+ Item No. NTP Requirements Reference Status Support
+ =================================================================
+ 8.4.1.2.01 Adjustment
+ Interval = 1 sec. 5.1 c1 Y[] N[]
+ 8.4.1.2.02 PPS Timeout = 60 sec. 5.1 c1 Y[] N[]
+ 8.4.1.2.02 Step Timeout =
+ 900 sec. 5.1 c1 Y[] N[]
+ 8.4.1.2.02 Maximum Aperture =
+ q512 ms 5.1 c1 Y[] N[]
+ 8.4.1.2.03 Frequency Weight = 16 5.1 c1 Y[] N[]
+ 8.4.1.2.04 Phase Weight = 9 5.1 c1 Y[] N[]
+ 8.4.1.2.05 Compliance Weight = 13 5.1 c1 Y[] N[]
+ 8.4.1.2.06 Compliance Maximum = 4 5.1 c1 Y[] N[]
+ 8.4.1.2.07 Compliance
+ Multiplier = 4 5.1 c1 Y[] N[]
+
+ c1:IF implementing a fuzzball using a main system clock
+ THEN m ELSE o.
+
+
+
+
+
+
+
+
+Gowin [Page 9]
+
+RFC 1708 NTP PICS Proforma October 1994
+
+
+8.4.2 PHASE ADJUSTMENT
+
+ Item No. NTP Requirements Reference Status Support
+ =================================================================
+ 8.4.2.01 Gradual Phase
+ Adjustment 5.2 m Y[] N[]
+ 8.4.2.02 Step Phase Adjustment 5.3 m Y[] N[]
+
+8.5 NTP DATA FORMAT
+
+ 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 1994
+
+
+8.6 NTP Control Messages
+
+8.6.1 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 1994
+
+
+8.6.1.1 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[]
+
+ c1:IF control messages are used THEN m ELSE o.
+
+8.6.2 System Words
+
+8.6.2.1 System Status Word
+
+ 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[]
+
+ c1:IF control messages are used THEN m ELSE o.
+
+8.6.2.2 Peer Status Word
+
+ 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 1994
+
+
+8.6.2.3 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[]
+
+ c1:IF control messages are used THEN m ELSE o.
+
+8.6.2.4 Error Status Word
+
+ 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[]
+
+ c1:IF control messages are used THEN m ELSE o.
+
+9. Security Considerations
+
+ Security issues are not discussed in this memo
+
+10. References
+
+ [1] Mills. D., "Network Time Protocol Version 3 - Specification,
+ Implementation and Analysis", RFC 1305, UDEL, March 1992.
+
+11. Author's Address
+
+ Dan R. Gowin
+ Vitro a Tracor Company
+ 5001 N. St. Rd. 37 (BUS)
+ Bloomington, IN 47404-1626
+
+ Phone: (812) 336-2299 x379
+ Fax: (812) 333-0415
+ EMail: drg508@crane-ns.nwscc.sea06.navy.MIL
+
+
+
+
+
+
+
+
+
+
+
+
+Gowin [Page 13]
+