[ntp:questions] NTP - orphan mode with SAME stratum ("tos orphan 6") FAIL to sync.

sheikdawoodrajali at gmail.com sheikdawoodrajali at gmail.com
Thu Apr 2 08:17:42 UTC 2009


I am testing "Time Island" in NTP on Windows platform.
I built the binaries using source downloaded from meinberg site.

Binaries built successfully and I'm testing it now.

NTP on ALL the nodes (7 nodes) with SAME stratum "orphan stratum 6"
identically configured
both as broadcast client and broadcast server ("Time Island") works
fine.

Problem:
--------------
When all the 7 nodes have the same config, using "orphan stratum 6"
and using the primary/secondary network broadcast FAILED to time-sync.

Time sync was successful ONLY if i do testing <=5 nodes.

And the "Selection algorithm tuning parameters" has the below values:
#define	NTP_MINCLOCK	3	/* min survivors */
#define	NTP_MAXCLOCK	10	/* max candidates */
#define	NTP_MAXASSOC	50	/* max associations */

Does it mean we cant have mode than 5 nodes (every node has 2
broadcast interfaces, one for primary and other for secondary)
configured in the SAME stratum level ?

If I have more 7 nodes during the testing, the "ntpq -q" results
"X" condition to ALL the nodes during the query.

What's the MAX number of nodes that can be used for ORPHAN mode
testing?

Any suggestions on this regard are welcome!!

BILLBOARD results:
------------------------------

ntpq>
peers
     remote           refid      st t when poll reach   delay
offset  jitter
==============================================================================
 39.95.255.255   .BCST.          16 u    -   64    0    0.000
0.000   0.001
 39.111.255.255  .BCST.          16 u    -   64    0    0.000
0.000   0.001
x39.92.128.6     127.0.0.1        6 u   59   64  376    0.236
-130361   1.410
x39.108.128.6    127.0.0.1        6 u   53   64  376    0.174
-130361   1.396
x39.98.208.6     127.0.0.1        6 u   61   64  376    0.210
-548318   2.975
x39.82.208.6     127.0.0.1        6 u   60   64  376    0.218
-548318   2.541
x39.81.224.16    127.0.0.1        6 u   42   64  376    0.393
-455581   1.901
x39.97.224.16    127.0.0.1        6 u   48   64  377    0.390
-455581   1.621
x39.81.224.15    127.0.0.1        6 u   45   64  376    0.216
-455603   0.695
x39.97.224.15    127.0.0.1        6 u   36   64  376    0.502
-455604   0.698
x39.81.224.6     127.0.0.1        6 u   43   64  377    0.176
1059871   0.968
x39.97.224.6     127.0.0.1        6 u   45   64  376    0.245
1059868   0.815
x39.97.64.6      127.0.0.1        6 u   29   64  376    0.236
42.836   3.811
x39.81.64.6      127.0.0.1        6 u   24   64  377    0.194
43.809   4.880
ntpq>


ntpq>
assoc

ind assID status  conf reach auth condition  last_event
cnt
===========================================================
  1 37893  c000   yes   yes   bad
reject
  2 37894  c000   yes   yes   bad
reject
  3 37895  7114    no   yes   ok  falsetick   reachable
1
  4 37896  7114    no   yes   ok  falsetick   reachable
1
  5 37897  7114    no   yes   ok  falsetick   reachable
1
  6 37898  7114    no   yes   ok  falsetick   reachable
1
  7 37899  7114    no   yes   ok  falsetick   reachable
1
  8 37900  7114    no   yes   ok  falsetick   reachable
1
  9 37901  7114    no   yes   ok  falsetick   reachable
1
 10 37902  7114    no   yes   ok  falsetick   reachable
1
 11 37903  7114    no   yes   ok  falsetick   reachable
1
 12 37904  7114    no   yes   ok  falsetick   reachable
1
 13 37905  7114    no   yes   ok  falsetick   reachable
1
 14 37906  7114    no   yes   ok  falsetick   reachable
1
ntpq>


ntpq>
passoc

ind assID status  conf reach auth condition  last_event
cnt
===========================================================
  1 37893  c000   yes   yes   bad
reject
  2 37894  c000   yes   yes   bad
reject
  3 37895  7114    no   yes   ok  falsetick   reachable
1
  4 37896  7114    no   yes   ok  falsetick   reachable
1
  5 37897  7114    no   yes   ok  falsetick   reachable
1
  6 37898  7114    no   yes   ok  falsetick   reachable
1
  7 37899  7114    no   yes   ok  falsetick   reachable
1
  8 37900  7114    no   yes   ok  falsetick   reachable
1
  9 37901  7114    no   yes   ok  falsetick   reachable
1
 10 37902  7114    no   yes   ok  falsetick   reachable
1
 11 37903  7114    no   yes   ok  falsetick   reachable
1
 12 37904  7114    no   yes   ok  falsetick   reachable
1
 13 37905  7114    no   yes   ok  falsetick   reachable
1
 14 37906  7114    no   yes   ok  falsetick   reachable
1
ntpq>


ntpq>
readvar
assID=0 status=0011 leap_none, sync_unspec, 1 event,
event_restart,
version="ntpd 4.2.4p5 at 1.1541-o Mar 15 23:23:09.92 (UTC-07:00) 2009
(12)",
processor="unknown", system="WINDOWS/NT", leap=00,
stratum=6,
precision=-20, rootdelay=0.000, rootdispersion=0.030,
peer=0,
refid=127.0.0.1, reftime=00000000.00000000  --- --- -- ----
--:--:--,
poll=6, clock=cd7b6f4c.4b49fb4e  Mon, Mar 30 2009 17:18:20.294,
state=0,
offset=0.000, frequency=0.000, jitter=0.001,
noise=0.001,
stability=0.000,
tai=0
ntpq>


ntpdc>
listpeers
broadcast
39.95.255.255
control
39.81.64.6
broadcast
39.111.255.255
control
39.97.64.6
control
39.92.128.6
control
39.81.224.6
control
39.108.128.6
control
39.81.224.15
control
39.82.208.6
control
39.81.224.16
control
39.97.224.6
control
39.97.224.15
control
39.98.208.6
control
39.97.224.16
ntpdc>


ntpdc>
sysstats
time since restart:
2958
time since reset:
2958
packets received:
869
packets processed:
630
current version:
741
previous version:
0
bad version:
0
access denied:
92
bad length or format:
0
bad authentication:
0
rate exceeded:
0
ntpdc>


ntpdc>
sysinfo
system peer:
0.0.0.0
system peer mode:
unspec
leap indicator:
00
stratum:
6
precision:
-20
root distance:        0.00000
s
root dispersion:      0.00002
s
reference ID:
[127.0.0.1]
reference time:       00000000.00000000  --- --- -- ----
--:--:--
system flags:         bclient auth monitor ntp kernel
stats
jitter:               0.000000
s
stability:            0.000
ppm
broadcastdelay:       0.003998
s
authdelay:            0.000006
s
ntpdc>




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