[ntp:questions] Re: clock not synching with low stratum time server

sbalaji79 at gmail.com sbalaji79 at gmail.com
Mon Jun 20 09:31:39 UTC 2005


Hi,


Following are the information that you have requested:-


1) Hardware is alpha and Os is Tru64


 XNTPDC -P output ( every 900 seconds)
 -------------------------------------




remote           local      st poll reach  delay   offset(secs)
disp^M
=======================================================================
=LOCAL(0)        127.0.0.1       12   64    3 0.00000  0.000000 3.93846
+cla2astr        5.0.0.0         16   64    0 0.00000  0.000000 0.00000
+cla3astr        5.0.0.0         16   64    0 0.00000  0.000000 0.00000
=timeclripfa     131.98.196.54    2   64    3 0.00188 -0.174708 3.93811


remote           local      st poll reach  delay   offset    disp
=======================================================================
*LOCAL(0)        127.0.0.1       12   64  377 0.00000  0.000000 0.00189
+cla2astr          10.0.0.1        14   64   17 0.00049 -0.275757
0.93919
+cla3astr          10.0.0.1        16   64    0 0.00000  0.000000
0.00000
=timeclripfa     131.98.196.54    2   64  377 0.00285  0.477008 0.00142
remote           local      st poll reach  delay   offset    disp^M
=======================================================================
*LOCAL(0)        127.0.0.1       12   64  377 0.00000  0.000000 0.00189
+cla2astr           10.0.0.1        14   64   17 0.00049  0.191304
0.43945
+cla3astr           10.0.0.1        14   64  374 0.00049  0.993265
0.00208
=timeclripfa     131.98.196.54    2   64  377 0.00284  1.122346 0.00143


remote           local      st poll reach  delay   offset    disp^M
=======================================================================
*LOCAL(0)        127.0.0.1       12   64  377 0.00000  0.000000 0.00191
+cla2astr            10.0.0.1        14   64  377 0.00049  0.462898
0.00200
+cla3astr            10.0.0.1        14   64  277 0.00049 -0.428132
0.00192
=timeclripfa     131.98.196.54    2   64  377 0.00188  1.834147 0.00143


The offset value of server timeclripfa  increased
0.5-0.7s(approximately) every
900 seconds interval. After around three days , xntpdc -p value showed
as following:
remote           local      st poll reach  delay   offset    disp
=======================================================================
=LOCAL(0)        127.0.0.1       12   64  377 0.00000  0.000000 0.00191
*cla2astr            10.0.0.1        13 1024  376 0.00615  0.002557
0.02705
+cla3astr           10.0.0.1        14 1024  377 0.00049 -0.000086
0.01656
=timeclripfa     131.98.196.54    2 1024  377 0.00383 131.74644 0.01530


Drift file has got the following value : 1.470(after 3 days).


I used local clock as a fall back reference just in case server
timeclripfa
goes down.

Other local peer servers ( cla2astr,cla3astr) also has approximately
same kind of stats as this one(cla2astr) i.e 130s drift after three
days.
 
                                               
Thanks,
Balaji




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