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system clock time issue

Posted on 2011-03-18
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Last Modified: 2012-08-14
I have this timer replication on ntp error:

NTP: -0.0003993s offset from mars.autoplex.com
        RefID: mars.autoplex.com [206.89.243.120]
        Stratum: 2

Warning:
Reverse name resolution is best effort. It may not be
correct since RefID field in time packets differs across
NTP implementations and may not be using IP addresses.

my time zone is gmt -05 eastern timer daylight saving but after 10  min replication interval is show 3 hours ahead… on system clock, one windows 2008 server timer is correct the other is 3 hours ahead…

Thanks in advance

David

timer-issue.txt.txt
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Question by:davidle21
6 Comments
 
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Expert Comment

by:Raneesh Chitootharayil
ID: 35170195
have you tried applying MS DST fixes are installed?
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Expert Comment

by:rjpilcher
ID: 35170211
One DC should be the authoritative time server, using an external time source, and the others should point to it.

First, determine your time sources with >net time /query

Once you have that properly configured (let me know if you need help with that), check replication:

>repadmin /showreps

They should all say they replicated successfully.  If not, post the errors here and I'll help you out.
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Expert Comment

by:barane
ID: 35170390
Kindly check the time zone on the servers which are 3 hours ahead.

Once I do had same issue but later I found the issue was with different time zone have been configured on the server.
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Author Comment

by:davidle21
ID: 35171198
I did MS DST fixes are installed, but that didnt make any different, please check the attachment that i tagged alone with this message, under cmd prompt. The time zone i checked which is corrected gmt -05
EST daylight saving..
here is the ccmd prompt
Microsoft Windows [Version 6.0.6002]
Copyright (c) 2006 Microsoft Corporation.  All rights reserved.

C:\Users\administrator.AUTOPLEX>ntp
'ntp' is not recognized as an internal or external command,
operable program or batch file.

C:\Users\administrator.AUTOPLEX>net time /querysntp
The current SNTP value is: time.windows.com,0x9

The command completed successfully.


C:\Users\administrator.AUTOPLEX>w32tm
w32tm [/? | /register | /unregister ]
  ? - this help screen.
  register - register to run as a service and add default
    configuration to the registry.
  unregister - unregister service and remove all configuration
    information from the registry.

w32tm /monitor [/domain:<domain name>]
               [/computers:<name>[,<name>[,<name>...]]]
               [/threads:<num>] [/ipprotocol:<4|6>] [/nowarn]
  domain - specifies which domain to monitor. If no domain name
    is given, or neither the domain nor computers option is
    specified, the default domain is used. This option may be
    used more than once.
  computers - monitors the given list of computers. Computer
   names are separated by commas, with no spaces. If a name is
    prefixed with a '*', it is treated as an AD PDC. This option
    may be used more than once.
  threads - how many computers to analyze simultaneously. The
    default value is 3. Allowed range is 1-50.
  ipprotocol - specify the IP protocol to use. The default is
    to use whatever is available.
  nowarn - skip warning message.

w32tm /ntte <NT time epoch>
  Convert a NT system time, in (10^-7)s intervals from 0h 1-Jan 1601,
  into a readable format.

w32tm /ntpte <NTP time epoch>
  Convert an NTP time, in (2^-32)s intervals from 0h 1-Jan 1900, into
  a readable format.

w32tm /resync [/computer:<computer>] [/nowait] [/rediscover] [/soft]
  Tell a computer that it should resynchronize its clock as soon
  as possible, throwing out all accumulated error statistics.
  computer:<computer> - computer that should resync. If not
    specified, the local computer will resync.
  nowait - do not wait for the resync to occur;
    return immediately. Otherwise, wait for the resync to
    complete before returning.
  rediscover - redetect the network configuration and rediscover
    network sources, then resynchronize.
  soft - resync utilizing existing error statistics. Not useful,
    provided for compatibility.

w32tm /stripchart /computer:<target> [/period:<refresh>]
    [/dataonly] [/samples:<count>] [/packetinfo] [/ipprotocol:<4|6>]
  Display a strip chart of the offset between this computer and
  another computer.
  computer:<target> - the computer to measure the offset against.
  period:<refresh> - the time between samples, in seconds. The
    default is 2s
  dataonly - display only the data, no graphics.
  samples:<count> - collect <count> samples, then stop. If not
    specified, samples will be collected until Ctrl-C is pressed.
  packetinfo - print out NTP packet response message.
  ipprotocol - specify the IP protocol to use. The default is
    to use whatever is available.

w32tm /config [/computer:<target>] [/update]
    [/manualpeerlist:<peers>] [/syncfromflags:<source>]
    [/LocalClockDispersion:<seconds>]
    [/reliable:(YES|NO)]
    [/largephaseoffset:<milliseconds>]
  computer:<target> - adjusts the configuration of <target>. If not
    specified, the default is the local computer.
  update - notifies the time service that the configuration has
    changed, causing the changes to take effect.
  manualpeerlist:<peers> - sets the manual peer list to <peers>,
    which is a space-delimited list of DNS and/or IP addresses.
    When specifying multiple peers, this switch must be enclosed in
    quotes.
  syncfromflags:<source> - sets what sources the NTP client should
    sync from. <source> should be a comma separated list of
    these keywords (not case sensitive):
      MANUAL - sync from peers in the manual peer list
      DOMHIER - sync from an AD DC in the domain hierarchy
      NO - sync from none
      ALL - sync from both manual and domain peers
  LocalClockDispersion:<seconds> - configures the accuracy of the
    internal clock that w32time will assume when it can't acquire
    time from its configured sources.
  reliable:(YES|NO) - set whether this machine is a reliable time source.
    This setting is only meaningful on domain controllers.
      YES - this machine is a reliable time service
      NO - this machine is not a reliable time service
  largephaseoffset:<milliseconds> - sets the time difference between
    local and network time which w32time will consider a spike.

w32tm /tz
  Display the current time zone settings.

w32tm /dumpreg [/subkey:<key>] [/computer:<target>]
  Display the values associated with a given registry key.
  The default key is HKLM\System\CurrentControlSet\Services\W32Time
    (the root key for the time service).
  subkey:<key> - displays the values associated with subkey <key>
    of the default key.
  computer:<target> - queries registry settings for computer <target>.

w32tm /query [/computer:<target>]
    {/source | /configuration | /peers | /status}
    [/verbose]
  Display a computer's windows time service information.
  computer:<target> - query the information of <target>. If not
    specified, the default is the local computer.
  source: display the time source.
  configuration: display the configuration of run-time and where
    the setting comes from. In verbose mode, display the undefined
    or unused setting too.
  peers: display a list of peers and their status.
  status: display windows time service status.
  verbose: set the verbose mode to display more information.

w32tm /debug {/disable | {/enable /file:<name> /size:<bytes> /entries:<value>
    [/truncate]}}
  Enable or disable local computer windows time service private log.
  disable: disable the private log.
  enable: enable the private log.
    file:<name> - specify the absolute filename.
    size:<bytes> - specify the maximum size for circular logging.
    entries:<value> - contains a list of flags, specified by number and
      seperated by commas, that specify the types of information that
      should be logged. Valid numbers are 0 to 300. A range of numbers
      is valid, in addition to single numbers, such as 0-100,103,106.
      Value 0-300 is for logging all information.
  truncate: truncate the file if it exists.

C:\Users\administrator.AUTOPLEX>w32tm /monitor
mars.autoplex.com *** PDC ***[206.89.243.120:123]:
    ICMP: 11ms delay
    NTP: +0.0000000s offset from mars.autoplex.com
        RefID: 'LOCL' [0x4C434F4C]
        Stratum: 1
earth.autoplex.com[192.168.2.11:123]:
    ICMP: 0ms delay
    NTP: -7203.4562575s offset from mars.autoplex.com
        RefID: mars.autoplex.com [206.89.243.120]
        Stratum: 2

Warning:
Reverse name resolution is best effort. It may not be
correct since RefID field in time packets differs across
NTP implementations and may not be using IP addresses.

C:\Users\administrator.AUTOPLEX>w32tm /resync
Sending resync command to local computer
The command completed successfully.

C:\Users\administrator.AUTOPLEX>w32tm /resync
Sending resync command to local computer
The command completed successfully.

C:\Users\administrator.AUTOPLEX>w32tm /resync
Sending resync command to local computer
The command completed successfully.

C:\Users\administrator.AUTOPLEX>w32tm /monitor
mars.autoplex.com *** PDC ***[206.89.243.120:123]:
    ICMP: 12ms delay
    NTP: +0.0000000s offset from mars.autoplex.com
        RefID: 'LOCL' [0x4C434F4C]
        Stratum: 1
earth.autoplex.com[192.168.2.11:123]:
    ICMP: 0ms delay
    NTP: +0.0073068s offset from mars.autoplex.com
        RefID: mars.autoplex.com [206.89.243.120]
        Stratum: 2

Warning:
Reverse name resolution is best effort. It may not be
correct since RefID field in time packets differs across
NTP implementations and may not be using IP addresses.

C:\Users\administrator.AUTOPLEX>net time /querysntp
The current SNTP value is: tick.usno.navy.mil,0x9

The command completed successfully.


C:\Users\administrator.AUTOPLEX>w32tm /resync
Sending resync command to local computer
The command completed successfully.

C:\Users\administrator.AUTOPLEX>w32tm /stripchart
Required parameter 'computer' missing.
The following error occurred: The parameter is incorrect. (0x80070057)

C:\Users\administrator.AUTOPLEX>w32tm /stripchart /computer:earth
Tracking earth [192.168.2.11:123].
The current time is 3/19/2011 1:07:02 AM.
01:07:02 d:+00.0000000s o:+00.0000000s  [                           *
                ]
01:07:04 d:+00.0000000s o:+00.0000000s  [                           *
                ]
01:07:06 d:+00.0000000s o:+00.0000000s  [                           *
                ]
01:07:08 d:+00.0000000s o:+00.0000000s  [                           *
                ]
01:07:10 d:+00.0000000s o:+00.0000000s  [                           *
                ]
01:07:12 d:+00.0000000s o:+00.0000000s  [                           *
                ]
^C
C:\Users\administrator.AUTOPLEX>w32tm /resync
Sending resync command to local computer
The command completed successfully.

C:\Users\administrator.AUTOPLEX>net time /querysntp
The current SNTP value is: tick.usno.navy.mil,0x9

The command completed successfully.

C:\Users\administrator.AUTOPLEX>w32tm /monitor
mars.autoplex.com *** PDC ***[206.89.243.120:123]:
    ICMP: 11ms delay
    NTP: +0.0000000s offset from mars.autoplex.com
        RefID: 'LOCL' [0x4C434F4C]
        Stratum: 1
earth.autoplex.com[192.168.2.11:123]:
    ICMP: 0ms delay
    NTP: -0.0003993s offset from mars.autoplex.com
        RefID: mars.autoplex.com [206.89.243.120]
        Stratum: 2

Warning:
Reverse name resolution is best effort. It may not be
correct since RefID field in time packets differs across
NTP implementations and may not be using IP addresses.

C:\Users\administrator.AUTOPLEX>

Thanks
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Accepted Solution

by:
davidle21 earned 0 total points
ID: 35175050
thanks all for the input...after reading some forum sites... i found... firewall was blocked on port 123.. disable and re enable seems it working now..

Thanks all

David
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Author Closing Comment

by:davidle21
ID: 35213266
i solved myself..
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