[ILUG] ntptrace strangeness

[Niall O Broin]

This box shows the kind of output I expect from an ntp server:

moca:~ # grep ^server /etc/ntp.conf
server 127.127.1.0              # local clock (LCL)
server ntps1-0.cs.tu-berlin.de

moca:~ # ntpq -4 -p
      remote           refid      st t when poll reach   delay   offset   
jitter
======================================================================== 
======
  LOCAL(0)        LOCAL(0)        10 l   63   64  377    0.000    0.000   
  0.001
*hora.cs.tu-berl .PPS.            1 u  439 1024  377   15.329    0.636   
  0.197

moca:~ # ntptrace
localhost: stratum 2, offset 0.000636, synch distance 0.045787
hora.cs.tu-berlin.de: stratum 1, offset 0.000004, synch distance  
0.000370, refid 'PPS'


but on this one ntptrace fails:

root at gateway:~ # grep ^server /etc/ntp.conf
server ie.pool.ntp.org
server time.euro.apple.com
server 127.127.1.0

root at gateway:~ # ntpq -4 -p
      remote           refid      st t when poll reach   delay   offset   
jitter
======================================================================== 
======
*ntp0.esat.net   .GPS.            1 u   23   64  377   13.613    0.330   
  4.401
+interweb.euro.a 17.72.133.55     2 u   19   64  377   52.369    4.063   
  8.373
  LOCAL(0)        LOCAL(0)        13 l   26   64  377    0.000    0.000   
  0.001

root at gateway:~ # ntptrace
localhost: stratum 2, offset 0.000000, synch distance 0.006807
193.120.10.3: timed out, nothing received
***Request timed out

193.120.10.3 is ntp0.esat.net, and I get that server as it's one of the  
hosts which will be returned for ie.pool.ntp.org (ie.pool.ntp.org could  
use some more machines, if you have a permanently connected time server  
where you could spare maybe 10kbit/s)

Any ideas?


Niall