On 3/17/2014 6:37 PM, E-Mail Sent to this address will be added to the BlackLists wrote: > Joe Gwinn wrote:> Magnus Danielson wrote: >>> Joe Gwinn wrote: >>>> Yes. My question is basically a query about the current state >>>> of the art [in PTP]. >>> >>> The state of the art is not yet standard and not yet off the shelf >>> products, if you want to call it PTP. >> >> This is my fear and instinct. But people read the adverts and will >> continue to ask. And some customers will demand. So, I'm digging >> deeper. >> >> Are there any good places to start?
You might want to look at <http://www.dtic.mil/cgi-bin/GetTRDoc?AD=ADA538755> AN NTP STRATUM-ONE SERVER FARM FED BY IEEE-1588 Richard E. Schmidt and Blair Fonville Time Service Department, U.S. Naval Observatory 14. ABSTRACT For the past 16 years, USNO?s Network Time Protocol (NTP) stratum-1 servers have been synchronized to its Master Clocks via IRIG-B time code on a low-frequency RF distribution system. The availability of Precise Time Protocol (PTP, IEEE-1588) host-based interfaces will enable the deployment of NTP servers fed by IEEE-1588 over conventional Ethernet networks. This paper describes a PTP GrandMaster/Slave network which maintains synchronization of internal (stratum-0) NTP reference clocks to within tens of nanoseconds. The configuration of a PTP network and the effects of various PTP configuration options are demonstrated. -- E-Mail Sent to this address <[email protected]> will be added to the BlackLists. _______________________________________________ questions mailing list [email protected] http://lists.ntp.org/listinfo/questions
