[ntp:questions] Synchronize clocks without a reference clock
devnull at localhost.com
Wed Mar 21 16:24:51 UTC 2007
Richard B. gilbert wrote:
> Spoon wrote:
>> Consider a cluster of computers on a LAN. These computers have no
>> acess to a reference clock (no Internet, no GPS, etc).
>> One could still want to have all their clocks synchronized, even if
>> this means they are all slowly drifting away from the "real" time.
>> I've read a FAQ which seems to describe this use case.
>> All I need to do would be to add these lines:
>> server 127.127.1.1 # LCL, local clock
>> fudge 127.127.1.1 stratum 12 # increase stratum
>> to my configuration file? Did I understand correctly?
> That will cause ntpd to serve the local clock. You can, instead, use
> something called orphan mode in which several machines agree on a
> common, but not necessarily correct, time. I've never done it. See the
> documentation for details.
As far as I understand, orphan mode works through broadcast, correct?
If I have a pair of computers A and B in different subnets, and they can
only talk to each other, then my only option is to configure A to serve
its local clock, and B as a client of A. Is that correct?
More information about the questions