To expound upon Yu’s comment.  If you don’t have access to the firewall, a good 
check would be to conduct a test against each of your targeted NTP servers with 
the “ntpdate -d” command, which is the debug switch and will let you know if 
you can or cannot reach the intended systems.

-Dallas


> On May 13, 2015, at 8:54 AM, Wang, Yu <ywan...@fsu.edu> wrote:
> 
> Do your ntp servers have public IP addresses configured or do you do NAT for 
> the two ntp servers? 10.126.142.198 and 10.126.142.204 are private addresses 
> and won't be routed over the Internet. 
> The second place to check is firewall. Make sure it opens to upd/123 between 
> your ntp servers and outside ntp servers.
> 
> Yu
> Core Networking, FSU
> 
> 
> -----Original Message-----
> From: questions [mailto:questions-bounces+ywang10=fsu....@lists.ntp.org] On 
> Behalf Of Chandrakanth K
> Sent: Wednesday, May 13, 2015 7:52 AM
> To: questions@lists.ntp.org
> Subject: [ntp:questions] NTP not syncing to configured servers
> 
> Hi,
> 
> I am seeing ntp not syncing to external configured servers. We tried both 
> 4.2.4 and 4.2.6 versions.
> The following is the configuration,
> 
> We use two servers 10.126.142.198 and 10.126.142.204 in our Lab.
> They are statically configured as running @ stratum level 5 and providing the 
> clock from its own local clock.
> 
> Even though the servers does not have a valid reference time and provides 
> time from its own clock, according to me still we need to be able to sync to 
> it since it is running at better stratum.
> Please clarify.
> 
> Logs:
> -------------------------
> 
> bash-4.2$ ntpq -np -c assoc
>     remote           refid      st t when poll reach   delay   offset  jitter
> ==============================================================================
> *127.127.1.0     .LOCL.          10 l   19   64  377    0.000    0.000   0.001
> 10.126.142.198      LOCAL(0)         6 u    7   16  377    0.172  859.844   
> 0.501
> 10.126.142.204      LOCAL(0)         6 u   15   16  377    0.227  1057.22   
> 0.240
> 
> ind assID status  conf reach auth condition  last_event cnt 
> ===========================================================
>  1 26554  9614   yes   yes  none  sys.peer   reachable  1
>  2 26555  9014   yes   yes  none    reject   reachable  1
>  3 26556  9014   yes   yes  none    reject   reachable  1
> 
> Logs: 10.126.142.198
> -----------------------------------
> bash-4.2$ ntpq -np -c assoc
>     remote           refid      st t when poll reach   delay   offset  jitter
> ==============================================================================
> *127.127.1.0     .LOCL.           5 l   10   64  377    0.000    0.000   0.000
> 
> ind assid status  conf reach auth condition  last_event cnt 
> ===========================================================
>  1 48508  965a   yes   yes  none  sys.peer    sys_peer  5
> 
> 
> Logs: 10.126.142.204
> -----------------------------------
> 
> bash-4.2$ ntpq -np -c assoc
>     remote           refid      st t when poll reach   delay   offset  jitter
> ==============================================================================
> *127.127.1.0     .LOCL.           5 l   13   64  377    0.000    0.000   0.000
> 
> ind assid status  conf reach auth condition  last_event cnt 
> ===========================================================
>  1 32737  963a   yes   yes  none  sys.peer    sys_peer  3
> 
> 
> Regards
> Chandrakanth
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