Andy wrote: > About 10 years ago we used to have 2 seperate GPS receivers feeding > into two Sparc servers via their serial port. I can't remember the > version of NTP we ran however these were our stratum one servers, One > of the Sparcs developed a fault on it's serial interface which delayed > the input meaning the two stratum one servers started showing > different time so all the statum 2 servers stopped trusting both > stratum 1 servers as they could not determine which server, if any, > was telling the truth. Ever since then we have always used at least 3 > stratum one servers with seperate stratum zero sources to form a > quorum so that startum 2 can differentiate the good from the bad. I > believe this is set down as best practise in the ntp.org FAQ - this is > a practical example of why this is wise.
The "best practice" is in fact to use at least _four_ sources, that way you can lose one and still have a voting group. Terje -- - <Terje.Mathisen at tmsw.no> "almost all programming can be viewed as an exercise in caching" _______________________________________________ questions mailing list [email protected] https://lists.ntp.org/mailman/listinfo/questions
