[ntp:questions] Re: uk pool problem
Richard B. Gilbert
rgilbert88 at comcast.net
Mon Aug 28 22:22:52 UTC 2006
Eugen COCA wrote:
>>From my Stratum 1 server:
>
> ntp1# ntptrace 84.92.75.21
> blackhole.arlott.org.uk: stratum 1, offset -0.002353, synch distance
> 0.006055, refid 'DCFa'
>
>
> So, all things seems to be OK !
>
I just tried the following:
sunblok_$ ntpdate -du blackhole.arlott.org.uk
28 Aug 18:19:26 ntpdate[13166]: ntpdate 4.2.1p241-RC at 1.1498 Wed Apr 26
20:16:59 EDT 2006 (1)
Looking for host blackhole.arlott.org.uk and service ntp
host found : blackhole.arlott.org.uk
transmit(84.92.75.21)
receive(84.92.75.21)
transmit(84.92.75.21)
receive(84.92.75.21)
transmit(84.92.75.21)
receive(84.92.75.21)
transmit(84.92.75.21)
receive(84.92.75.21)
transmit(84.92.75.21)
server 84.92.75.21, port 123
stratum 15, precision -20, leap 00, trust 000
refid [84.92.75.21], delay 0.15500, dispersion 0.00000
transmitted 4, in filter 4
reference time: bc17c1ff.00000000 Fri, Dec 31 1999 18:59:59.000
originate timestamp: bc17c1ff.00000000 Fri, Dec 31 1999 18:59:59.000
transmit timestamp: c89dea6e.eef5df4c Mon, Aug 28 2006 18:19:26.933
filter delay: 0.16431 0.15500 0.15509 0.15636
0.00000 0.00000 0.00000 0.00000
filter offset: -2101187 -2101187 -2101187 -2101187
0.000000 0.000000 0.000000 0.000000
delay 0.15500, dispersion 0.00000
offset -210118767.738966
28 Aug 18:19:27 ntpdate[13166]: step time server 84.92.75.21 offset
-210118767.738966 sec
It sure doesn't look okay to me!!!!! OTOH the output of
sunblok_$ ntpq -p 84.92.75.21
remote refid st t when poll reach delay offset
jitter
==============================================================================
*SHM(0) .DCFa. 0 l 37 64 377 0.000 -1.798
0.404
SHM(1) .MSFa. 0 l 688 64 0 0.000 0.000
4000.00
+ntp0.nl.uu.net .GPS. 1 u 424 1024 377 62.042 -1.119
1.750
-ntp1.nl.uu.net .GPS. 1 u 418 1024 277 61.927 0.275
1.153
+tik.cesnet.cz .GPS. 1 u 388 1024 377 69.535 -1.671
1.024
-ntp1.sp.se .PPS. 1 u 386 1024 377 83.789 -2.838
6.061
+ntp2.sp.se .PPS. 1 u 408 1024 377 84.089 -1.783
2.341
+ntp-galway.hea. .GPS. 1 u 418 1024 377 69.287 -1.425
0.733
+ntps1-0.cs.tu-b .PPS. 1 u 406 1024 377 78.190 -2.083
2.960
batman.npl.co.u 139.143.49.13 2 u 62 1024 377 51.350 -3.677
4.123
ntp2.npl.co.uk 78.84.80.0 2 u 28 1024 377 56.097 1.949
12.404
sunblok_$ ntptrace 84.92.75.21
blackhole.arlott.org.uk: stratum 1, offset -0.001798, synch distance
0.004925, refid 'DCFa'
Looks quite reasonable.
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