rfc1708.txt
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732 行
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]
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