[ntp:questions] NTP v3 server, v4 client can't synch

Romain at ntp.org Romain at ntp.org
Wed Sep 9 17:58:34 UTC 2009

In <MfHpm.77193$OO7.45602 at text.news.virginmedia.com> "David J Taylor" <david-taylor at blueyonder.not-this-part.nor-this.co.uk.invalid> writes:
| Get the host machine synced with NTP, and let VMware handle the timing for 
| the client OS.  There is a VMware paper on time syncing IIRC.  The 
| timekeeping won't be wonderful - perhaps to within a second or two?

Thanks for the followup.

However, I should clarify.  The customer is using the VM as their
NTP server.  The APM device is dedicated hardware, so it doesn't
have a VMware host that it would sync against.

(And of course, there is a fundamental challenge with attempting
to acquire network metrics like jitter using a VM, unless you have
some clever mechanism to timestamp network packets independently
of the VM's execution latency...)

Romain Kang         Neither KZSU 90.1 FM Radio nor Stanford University assume  
rkang at opnet.com             no responsibility for the content of this message.
romain at kzsu.stanford.edu

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