Forum Discussion
Is NTP server accessible on a management port or traffic VLANs?
There is a known issue: ID247909, CR138146"You might encounter an issue in which the NTP servers do not sync after a system reboot. You can recognize this by running the command ntpq -p to determine whether some of the NTP servers continue to have a refid of .INIT. You might find the issue more pronounced on the VIPRION platform because every blade is an NTP peer of every other blade. (Note that a refid of .INIT is normal for any system with no defined NTP server. F5 strongly recommends defining an NTP server.) This appears to occur only on networks accessible through VLANs, and does not occur with NTP servers serviced by the management port. The issue can be particularly problematic for IPv6 addresses because the system caches the unreachable destination information. To work around the issue, when tmm is up and servicing traffic, run the command bigstart restart ntpd to restart the ntpd process."
Also check out SOL7017