[ntp:questions] confusing clock selection...

2011-07-08 Thread Florian Heigl
Hi, I'm doing some testing of the ntp config I made and don't really understand what just happened. Primarly I'm looking at two ntp servers and one clock out of a larger setup. NTP is quite critical so I've already done some head-scratching to come to this setup. Setup on ntp01: server meinberg1

Re: [ntp:questions] confusing clock selection...

2011-07-08 Thread Chuck Swiger
On Jul 8, 2011, at 7:38 AM, Florian Heigl wrote: # local fallback clock server 127.127.1.0 fudge 127.127.1.0 stratum 10 Don't do this, unless you absolutely need ntpd to freewheel in the absence of a reference time from the GPS receiver or other NTP servers for an extended period of time.

Re: [ntp:questions] confusing clock selection...

2011-07-08 Thread Richard B. Gilbert
On 7/8/2011 10:38 AM, Florian Heigl wrote: Hi, I'm doing some testing of the ntp config I made and don't really understand what just happened. Primarly I'm looking at two ntp servers and one clock out of a larger setup. NTP is quite critical so I've already done some head-scratching to come to

Re: [ntp:questions] confusing clock selection...

2011-07-08 Thread Chuck Swiger
On Jul 8, 2011, at 10:27 AM, Florian Heigl wrote: Don't do this, unless you absolutely need ntpd to freewheel in the absence of a reference time from the GPS receiver or other NTP servers for an extended period of time. That's the case - if we lose all 4 reference clocks the NTP servers

[ntp:questions] PLL vs. FLL why is their behavior so different?

2011-07-08 Thread Mischanko, Edward T
I've noticed that when polling at lower intervals, and PLL is in use, that the frequency tends to change as expected to steer the offset towards zero. When polling intervals increase, and FLL is in use, the frequency tends to follow the offset and not steer the offset towards zero. Why does FLL