I've never been able to get a CM6 to sync time with the NTP server
running on Windows 2003 DCs. I ran a capture and Windows is using NTP
v3 and CM6 uses NTP v4. It appears that most ntp v4 client
implementations can not sync with NTPv3 servers. So much for backwards
compatibility.<br>
<br>
your best bet will be to just sync your IOS and CM time to a public
time server such as the <a href="http://ntp.org">ntp.org</a> pool servers and let your windows
sysadmins sync their time to the same time servers.<br>
<br>
<a href="http://www.pool.ntp.org/en/use.html">http://www.pool.ntp.org/en/use.html</a><br>
<br><br><div class="gmail_quote">On Thu, Mar 19, 2009 at 6:14 PM, James Jung <span dir="ltr"><<a href="mailto:James.Jung@telecom.co.nz">James.Jung@telecom.co.nz</a>></span> wrote:<br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
<div link="blue" vlink="#606420" lang="EN-AU">
<div>
<p><font face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial;">Hi guys</span></font></p>
<p><font face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial;"> </span></font></p>
<p><font face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial;">I can’t get the Cisco router and CUCM 6 synchronized with
the ntp server in windows domain controller.</span></font></p>
<p><font face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial;"> </span></font></p>
<p><font face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial;">The router debug shows it receives ntp packet from the ntp
server but the ntp status is still unsynchronized.</span></font></p>
<p><font face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial;">I’d appreciate if you can help me on this.</span></font></p>
<p><font face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial;"> </span></font></p>
<p><font face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial;"> </span></font></p>
<p><font face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial;"> </span></font></p>
<p><font face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial;">.Mar 19 20:46:47.864: NTP message received from
192.168.1.200 on interface 'GigabitEthernet0/0' (192.168.121.251):</span></font></p>
<p><font face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial;"> </span></font></p>
<p><font face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial;">L #</span></font></p>
<p><font face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial;">.Mar 19 20:46:47.864: </span></font></p>
<p><font face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial;"> NTP Header:</span></font></p>
<p><font face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial;"> Leap = 00, Version = 3, Mode = 4,</span></font></p>
<p><font face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial;"> Stratum = 1,</span></font></p>
<p><font face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial;"> Poll Interval = 6,</span></font></p>
<p><font face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial;"> Precision = -6,</span></font></p>
<p><font face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial;"> Root Delay = 0.0,</span></font></p>
<p><font face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial;"> Root Dispersion = 10.53731,</span></font></p>
<p><font face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial;"> refid = 76.79.67.76,</span></font></p>
<p><font face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial;"> Last update reftime = 3446415112.3153042866,</span></font></p>
<p><font face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial;"> Originated time = 3446484407.3715216540,</span></font></p>
<p><font face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial;"> Received time = 3446484600.872415232,</span></font></p>
<p><font face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial;"> Transmit time = 3446484600.872415232.</span></font></p>
<p><font face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial;"> Hexadecimal equivalent (length = 48):</span></font></p>
<p><font face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial;"> 0000: 1C 01 06 FA 00 00 00 00</span></font></p>
<p><font face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial;"> </span></font><font face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial;" lang="DE">0008: 00 0A D1 E3 4C 4F 43
4C</span></font></p>
<p><font face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial;" lang="DE"> 0010: CD 6C 1F 08 BB EF 9D B2</span></font></p>
<p><font face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial;" lang="DE"> 0018: CD 6D 2D B7 DD 71 B4 9C</span></font></p>
<p><font face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial;" lang="DE"> 0020: CD 6D 2E 78 34 00 00 00</span></font></p>
<p><font face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial;" lang="DE"> </span></font><font face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial;">0028: CD 6D 2E 78 34 00 00 00</span></font></p>
<p><font face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial;"> </span></font></p>
<p><font face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial;">ABC1-R2#sh ntp status</span></font></p>
<p><font face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial;">Clock is unsynchronized, stratum 16, no reference clock</span></font></p>
<p><font face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial;">nominal freq is 250.0000 Hz, actual freq is 250.0000 Hz,
precision is 2**24</span></font></p>
<p><font face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial;">reference time is CD6D26DC.DD7A2B49 (09:17:32.865 NZDT Fri
Mar 20 2009)</span></font></p>
<p><font face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial;">clock offset is 0.0000 msec, root delay is 0.00 msec</span></font></p>
<p><font face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial;">root dispersion is 0.10 msec, peer dispersion is 0.00 msec</span></font></p>
<p><font face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial;">loopfilter state is 'CTRL' (Normal Controlled Loop), drift
is 0.000000000 s/s</span></font></p>
<p><font face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial;">system poll interval is 64, last update was 6710 sec ago.</span></font></p>
<p><font face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial;"> </span></font></p>
<p><font face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial;"> </span></font></p>
<p><font face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial;"> </span></font></p>
</div>
</div>
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