[cisco-voip] NTP Sync in CUCM 7.x under VMware

[Mark Holloway]

I have an ISR configured as an NTP master on the same subnet as my VMWare
host and guests.  NTP appears to be working fine.

-----Original Message-----
From: cisco-voip-bounces at puck.nether.net
[mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of Wes Sisk
Sent: Tuesday, April 28, 2009 2:49 PM
To: Matthew Melbourne
Cc: cisco-voip at puck.nether.net
Subject: Re: [cisco-voip] NTP Sync in CUCM 7.x under VMware

VMWare recommends not using NTP on guests.  Synch the host and let the 
guests follow the host.

/Wes

On Tuesday, April 28, 2009 5:31:45 PM, Matthew Melbourne 
<matt at melbourne.org.uk> wrote:
> Hi,
>
> I have installed CUCM 7.0(2a) under VMware, but I am unable to get it
> synchronise to an external NTP server. I've tried several external NTP
> servers, but using the platform "utils ntp status" CLI command shows that
it
> is configured (and reachable) but will not sync with the external time
> source. The Publisher appears to synchronise momentarily but quickly loses
> sync and starts following its own clock. Also, I notice that the appliance
> hardware clock is losing time, as compared to the VM Host OS time. I'm
sure
> certain I didn't have this problem with a CUCM 6.1(3) VM.
>
> Cheers,
>
> Matt
>
>   

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