<html><head><style type='text/css'>p { margin: 0; }</style></head><body><div style='font-family: verdana,helvetica,sans-serif; font-size: 10pt; color: #000000'><br>I recently opened a case and the TAC engineer ran the "utils diagnose
test" command on two of the subscribers. We saw the following output
regarding NTP. Similar output on all subscribers.<br><br>======================<br><font face="courier new,courier,monaco,monospace,sans-serif">test - ntp_stratum : Failed<br>The reference NTP server is a stratum 5 clock.<br>NTP servers with stratum 5 or worse clocks are deemed unreliable.<br>Please consider using an NTP server with better stratum level.<br><br>Please use OS Admin GUI to add/delete NTP servers.</font><br>======================<br><br>This is very confusing, since we have synchronized the publisher to a stratum 3 NTP server, making the publisher a stratum 4.<br><br>I
don't think it's possible to synchronize the publisher to a stratum 2
since that would mean the publisher would have to talk to an upstream
NTP server, this is not likely.<br><br>some additional output:<br><font face="courier new,courier,monaco,monospace,sans-serif"><br>=====<br>upstreamNTPserver>show ntp status<br>Clock is synchronized, stratum 3, reference is <snip><br>nominal freq is 250.0000 Hz, actual freq is 249.9994 Hz, precision is 2**24<br>reference time is D74EF2FD.DA2094A8 (13:50:53.852 EDT Fri Jun 20 2014)<br>clock offset is -3.7102 msec, root delay is 13.73 msec<br>root dispersion is 46.51 msec, peer dispersion is 18.67 msec<br>loopfilter state is 'CTRL' (Normal Controlled Loop), drift is 0.000002293 s/s<br>system poll interval is 1024, last update was 1297 sec ago.<br>=====<br>on publisher<br><br><br>admin:utils ntp status<br>ntpd (pid 6808) is running...<br><br> remote refid st t when poll reach delay offset jitter<br>==============================================================================<br> <snip> .LOCL. 10 l 38 64 377 0.000 0.000 0.001<br>+<snip> </font><font face="courier new,courier,monaco,monospace,sans-serif"><font face="courier new,courier,monaco,monospace,sans-serif"><snip> </font>3 u 18 1024 377 0.647 4.618 0.043<br>*<snip> </font><font face="courier new,courier,monaco,monospace,sans-serif"><font face="courier new,courier,monaco,monospace,sans-serif"><snip> </font> 3 u 123 1024 377 0.726 -4.041 0.025<br><br><br>synchronised to NTP server (upstreamNTPserver) at stratum 4<br> time correct to within 86 ms<br> polling server every 1024 s<br><br>Current time in UTC is : Fri Jun 20 18:10:59 UTC 2014<br>Current time in America/Toronto is : Fri Jun 20 14:10:59 EDT 2014<br>=====<br>on subscriber:<br><br>admin:utils ntp status<br>ntpd (pid 9136) is running...<br><br> remote refid st t when poll reach delay offset jitter<br>==============================================================================<br> 127.127.1.0 .LOCL. 10 l 54 64 377 0.000 0.000 0.001<br>*</font><font face="courier new,courier,monaco,monospace,sans-serif"><font face="courier new,courier,monaco,monospace,sans-serif"><pub> </font><font face="courier new,courier,monaco,monospace,sans-serif"><font face="courier new,courier,monaco,monospace,sans-serif"><snip> </font> </font>4 u 324 512 377 0.200 -0.289 0.022<br><br><br>synchronised to NTP server (pub) at stratum 5<br> time correct to within 98 ms<br> polling server every 512 s<br><br>Current time in UTC is : Fri Jun 20 18:19:08 UTC 2014<br>Current time in America/Toronto is : Fri Jun 20 14:19:08 EDT 2014</font><br>=====<br><br>Software Version: 9.1.2.11900-12<br><br><div><span name="x"></span>---<br>Lelio Fulgenzi, B.A.<br>Senior Analyst, Network Infrastructure<br>Computing and Communications Services (CCS)<br>University of Guelph<br><br>519‐824‐4120 Ext 56354<br>lelio@uoguelph.ca<br>www.uoguelph.ca/ccs<br>Room 037, Animal Science and Nutrition Building<br>Guelph, Ontario, N1G 2W1<span name="x"></span><br></div><br></div></body></html>