Problems with ntpdate

Problems with ntpdate

Post by Paul Fischer of BTG Inc. Office Automati » Thu, 18 Apr 1996 04:00:00

Hello All,

It seems that ntpdate is acting weird for me.  When I run it against
UUNET's NTP server (A Cisco Router that supports UDP/NTP) I get the
following message:

1039 # ntpdate  Fddi0/0.GW2.DCA1.Alter.Net
ntpdate: no server suitable for synchronization found

Which makes me think I can't communicate with the server at the other
end, or it doesn work.  However, ntptrace works fine, and ntpdate -d
shows lots of output while talking to the server.  Has anyone seen
this before?  Does anyone know if ntpdate -d and ntptrace use
different packet types than ntpdate?  If so, it could be a firewall
problem.  Any way config information and output of ntptrace and
ntpdate -d are below.

Pentium P133 w/32 MB
One hard disk
Intel EtherExpress 16 ISA
CDROM drive
Sound Blaster 16 pro

1043 # ntptrace  Fddi0/0.GW2.DCA1.Alter.Net
Fddi0/0.GW2.DCA1.Alter.Net: stratum 3, offset -34.6116679, synch
distance 0.1431 43
Vienna1.VA.Alter.Net: stratum 2, offset -34.6206219, synch distance
0.072601 stratum 1, offset -34.6252995, synch distance
0.011078, refid 'PPS'

1044 # ntpdate -d Fddi0/0.GW2.DCA1.Alter.Net
ntpdate: ntpdate version=3.2; Tue Sep  7 16:54:10 CDT 1993 (1)
server, port 123
stratum 3, precision -19, leap 00, trust 000
refid [], delay 0.0355, dispersion 0.0018
transmitted 4, in filter 4
reference time:      b51fdae1.bb4d9c50  Wed, Apr 17 1996 17:02:25.731
originate timestamp: b51fe1ad.b941b7e5  Wed, Apr 17 1996 17:31:25.723
transmit timestamp:  b51fe1d0.570a4000  Wed, Apr 17 1996 17:32:00.340
filter delay:  0.0355   0.0355   0.0355   0.0455
               0.0000   0.0000   0.0000   0.0000
filter offset: -34.6253 -34.6225 -34.6243 -34.6263
               0.00000  0.00000  0.00000  0.00000
delay 0.0355, dispersion 0.0018
offset -34.6253831

ntpdate: step time server offset -34.6307788


Paul Fischer     Internet Administrator          BTG, Inc.
(703) 761-6644   (703) 556-9290 (fax)            1945 Old Gallows Rd
"I have a notebook, therefore I will succeed!"   Vienna, VA 22182


1. ntpdate questions/problems

    On a 5.0.5 system I'm trying to run ntpdate.  From the man pages it
appears that I do not need to be running xntpd (which I'm not), in fact it
suggests running ntpdate before xntpd starts on boot.  Problem is, I don't
get a response from the ntp servers (,, .  I can ping them (IP or name), traceroute
them, etc.  Yet when I run ntpdate I get "ntpdate: no server suitable for
synchronization found".  In debug mode I see I'm not getting any receive
from the servers.
    Does anyone have any ideas? TIA

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