[c-nsp] NTP Server Recommendation?

[Phil Mayers]

On 02/05/2011 11:32 PM, Michael Vinogradsky wrote:
> The design would be comprised of two redundant NTP server in separate
> geographic locations. The budget in the ballpark of two 2800 routers.
> Precision is not that important.

Two NTP servers is a bad number. If one malfunctions... how does a 
client know which one to trust? Have at least 3.

I would recommend ntpd on a Linux box or boxes. It will handle very high 
numbers of NTP clients and is the reference implementation, with very 
comprehensive config guides.

Unless you have very specialist needs, it is unlikely you need a local 
clock source; there are almost certainly good local tier1 NTP servers 
you can sync to (pick at least 5; have each of your at-least-3 local 
servers act as client to them, and peer to each other)