Folks,
For a large organisation, I am reviewing the current NTP-infrastructure.
Because high-availability is a major concern, I am considering the following
architecture (improvement):
*
Three stratum-1 NTP-servers, geographically dispersed
*
Each stratum-1 NTP-server has a peering relation with each other
stratum-1 NTP-server
*
Two stratum-1 NTP servers use GPS as stratum-0.
*
Two stratum-1 NTP servers use Rubidium as stratum-0.
*
(So consequently, one stratum-1 server uses both).
The formal requirement states that when one location fails completely, it must
still be possible to apply maintance on the other NTP-infrastructure without
discontinuing the service. Intuitively, I would say 3 servers are required,
also because of the algorithms (which I dont understand in detail) used for
identifying "false-tickers"(??). One option is to have each stratum-1 server
implemented with GPS and Rubidium timesources, but especially for GPS there are
cost considerations.
Another consideration is that the stratum-2 implementation is outside the scope
of the department offering the NTP-service. So we do not control this
implementation, but we could define guidelines for a proper implementation. But
if controlling the stratum-2 layer is an essential requirement for high
availability, this probably could be implemented.
Any comments on this architecture proposal and consequences for the
implementation are highly appreciated.
For instance, what are considered best practices for NTP-architecture?
Thanks a lot!
Raymond
This e-mail and any attachment is for authorised use by the intended
recipient(s) only. It may contain proprietary material, confidential
information and/or be subject to legal privilege. It should not be copied,
disclosed to, retained or used by, any other party. If you are not an intended
recipient then please promptly delete this e-mail and any attachment and all
copies and inform the sender. Thank you.
_______________________________________________
questions mailing list
questions@lists.ntp.org
https://lists.ntp.org/mailman/listinfo/questions
