Mar 27, 2026 - For details about updated CVE-2025-53521 (BIG-IP APM vulnerability), refer to K000156741.

Forum Discussion

veato's avatar
veato
Icon for Nimbostratus rankNimbostratus
Oct 17, 2018

System Times of Devices Do Not Match

I have two BIG-IP devices running 13.1.1 and noticed today in the UI that the times do not match. My passive/standby box is 6 seconds ahead. Looking at the configuration they are both using the same ...
application delivery
big-ip
ntp
time
TMOS
youssef1's avatar
youssef1
Icon for Cumulonimbus rankCumulonimbus
Oct 17, 2018

Hi,

did you verifying NTP peer server communications:

https://support.f5.com/csp/article/K10240

Please folow this kb to be sure that settings and communication worked fine:

Verifying the NTP daemon service

  1. Log in to tmsh by typing the following command: tmsh

  2. To show the status of the NTP daemon, type the following command: show /sys service ntpd

  3. Optional: If the NTP daemon service is not running, and you would like to start it, type the following command: start /sys service ntpd

  4. Optional: If the NTP daemon requires a restart, type the following command: restart /sys service ntpd

  5. To exit tmsh, type the following command: quit

Verifying the communication between the BIG-IP system and the NTP peer server

  1. Log in to the BIG-IP system command line.
  2. To verify the NTP peer server communication, type the following command: ntpq -np

then follow the KB ...

regards