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swo0sh_gt_13163's avatar
swo0sh_gt_13163
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Apr 22, 2015

NTP time difference between Active / Standby appliance

Hello Folks, It has been quite sometime when I post a question on DevCentral. So here we go, I have 2 F5 A/S appliances. Both are pointing to 2 NTP servers as 10.13.1.11 and 10.13.1.12. NTP traffic...
management
ntp
swo0sh_gt_13163's avatar
swo0sh_gt_13163
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Apr 26, 2015

It seems the Windows server, which is configured as an NTP server on F5 is the culprit. After updating the timeout threshold to 16 (i.e. tos maxdist 16) it has improved the Offset. Now it seems as following.

[root@CompanyF5-3900U2:Standby:Changes Pending] config  ntpq -pn
     remote           refid      st t when poll reach   delay   offset  jitter
==============================================================================
*10.13.1.12      10.13.1.11       2 u    4   64    1    0.925  -30.579   0.342
+10.13.1.11      .LOCL.           1 u    3   64    1    0.795  -31.123   0.077
[root@CompanyF5-3900U2:Standby:Changes Pending] config

However because I have restarted the NTP service, the offset is considerably low. I will keep it under observation for 2-3 days and update the thread again with latest observation.

Thanks a ton Nitass for your extensive help mity! Much much appreciated!!

Cheers! Darshan