On 2007-06-29, [EMAIL PROTECTED] wrote: >Danny Meyer wrote: > >>I'm not sure where you think you are getting redundancy since the >>redundancy comes from picking a sufficient number of servers to >>provide time service to the SCADA systems. You can skip the routers. >>They don't need to be involved here. > > I can't skip the routers because they are a part of the NTP solution.
... keep in mind that routers are primarily designed to route packets in one interface and out another, and they usually have lots of custom silicon chips to help them perform this role very well and very quickly. They are not typically well-suited to the role of providing general-purpose services. In many cases, these kinds of functions are handed off to an internal shared CPU which is asked to perform all sorts of less common tasks on the router, and doing excessive amounts of work with NTP may cause it to be less able to do 'real work' as a router, or may cause it to perform poorly as an NTP server. (from http://support.ntp.org/bin/view/Support/DesigningYourNTPNetwork) > Because of all of the different subnets in this SCADA network (not > just around these servers) it is not possible to have the Stratum-1 > servers reachable on each subnet. The security guys won't allow it. Why? -- Steve Kostecke <[EMAIL PROTECTED]> NTP Public Services Project - http://support.ntp.org/ _______________________________________________ questions mailing list [email protected] https://lists.ntp.isc.org/mailman/listinfo/questions
