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You *can* because you have full access to the servers, however
understand that any upgrade will overwrite the configuration file. See
CSCsb66270. It is very important for your CM servers to be time
synched, even if it's the wrong time. This is why the basic
recommendation is:<br>
1. all subs synch to pub<br>
2. pub *may* sync to another clock source.<br>
<br>
It's generally not a good idea to sync all servers independently
because of the variations that become possible (different ntp sources,
...)<br>
<br>
/Wes<br>
<br>
Micah Bennett wrote:
<blockquote
cite="mid:160C116A79522E4B9404937D2E28811DD83066@exchange02.alsnet.als-xtn.com"
type="cite">
<pre wrap="">I agree that that document says not to, but this document says the
opposite. Page 7 of 8 near the bottom in reference to the configuration
for CCM 4.2 and earlier. That is where the confusion lies.
In my TAC case I also asked if I can just point all my servers straight
to the clock servers using the NTP.conf file that is on each box. No
answers back yet on any of my TAC questions.
Micah Bennett
Telecommunications Admin
Automated License Systems
-----Original Message-----
From: Robert Kulagowski [<a class="moz-txt-link-freetext" href="mailto:rkulagow@gmail.com">mailto:rkulagow@gmail.com</a>]
Sent: Tuesday, May 13, 2008 9:13 AM
To: Micah Bennett
Cc: <a class="moz-txt-link-abbreviated" href="mailto:cisco-voip@puck.nether.net">cisco-voip@puck.nether.net</a>
Subject: Re: [cisco-voip] Checking NTP status on CCM
Micah Bennett wrote:
</pre>
<blockquote type="cite">
<pre wrap="">Hello all
My CCM publisher server is pointed to our two NTP servers (via the
NTP.conf) file. My two CCM subscriber servers and my two IPCC servers
</pre>
</blockquote>
<pre wrap=""><!---->
</pre>
<blockquote type="cite">
<pre wrap="">are pointed to the CCM Publisher as their NTP source.
</pre>
</blockquote>
<pre wrap=""><!---->
According to
<a class="moz-txt-link-freetext" href="http://www.cisco.com/en/US/products/sw/voicesw/ps556/products_configurat">http://www.cisco.com/en/US/products/sw/voicesw/ps556/products_configurat</a>
ion_example09186a008009470f.shtml
Don't do that:
"
Note: You cannot use NTP to synchronize between two Cisco CallManagers.
The NTP that is installed in Cisco CallManager is a client NTP service
and only synchronizes to an NTP server.
"
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</pre>
<pre wrap="">
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</pre>
</blockquote>
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