On 2013-07-30, David Lord <[email protected]> wrote: > Dave Baxter wrote: >> Hi again. >> >> In reference to my other thread. >> "THunderbolt monitor/control on Win7 ?" >> >> Well, as that device seems happy in it's potential new home. >> >> I've been poking about the interweb looking for info as to getting the >> TB used as a reference clock for NTP. >> >> I found this page:- >> http://www.eecis.udel.edu/~mills/ntp/html/drivers/driver29.html >> >> That on the face of it, seems to tell me what I need. >> >> So, poking arround (no changes yet) my ntp.conf file, I "think" I need >> this:- >> >> # Trimble Thunderbolt on /dev/gps1 (first serial port) >> server 127.127.29.1 mode 2 minpoll 4 maxpoll 4 prefer >> fudge 127.127.29.1 time1 0.020 >> fudge 127.127.29.1 flag2 1 refid GPS >> server 0.uk.pool.ntp.org iburst minpoll 5 maxpoll 12 >> server 1.uk.pool.ntp.org iburst minpoll 5 maxpoll 12 >> server 2.uk.pool.ntp.org iburst minpoll 5 maxpoll 12 >> >> Would this be suitable for general purpose local time sourcing? With >> fallback to the pool if the TB burps, dies or is otherwise compromised. > > I'd add a few more public servers, I've been using five.
Why not 47? His are backups. 3 is fine. > >> Could all the fudge factors go on one line? > > Shouldn't be a problem. > > fudge 127.127.29.1 time1 0.020 flag2 1 refid GPS That looks like a huge time1 fudge. Are you sure that the pool servers do not actually give better time than does the Trimble? > >> (Sorry to ask silly questions, but I don't know, so have to ask.) >> If so, in what (if any) order? >> >> The server currently run's FreeBSD 8.0 Uptime over 772 days now, >> without a hitch! Nice... (I do plan to configure another box, running >> 9.x at some point to replace this one.) >> >> ntpq -crv reports (among other things)... >> version="ntpd 4.2.4p5-a (1)" > > I'm using 4.2.6p5 but that is fairly old (Dec 2011 maybe). One > of the 4.2.7pnnn may be a better choice although I tried both > 4.2.4p354 and p359 on NetBSD and had problems using the stom > driver. _______________________________________________ questions mailing list [email protected] http://lists.ntp.org/listinfo/questions
