Access Points (AP4600) unsync from NTP

[Sean_Tutor]

I have our Access Points and Wireless Controller set to use our Firewall as a NTP server. However randomly these Access Points will stop syncing correctly and their times will become several minutes faster. This causes the devices we use on our wireless to have the time displayed according to whichever AP they're connected too which can cause issues with clocking in and out.

My question is, what is causing the Access Points to stop using the NTP servers time?

Relevant spec information:
Wireless Mobility v5.4
AP4600
WM3400

Not exactly sure the firmware version is being run.

[Sean_Tutor]

Wm3400 - Primary = 4.3.1.0-022R Secondary = 5.4.0.0-047R

Ap4600 Primary = 5.4.0.0-047R Secondary = 1.1-1453R

I'll look it up after this but is there a link to show where and how to upgrade the firmware that doesn't involve physically being at the location?

[Chad_Smith1]

Sean,

There was a known issue resolved in v5.4.4 that involved sync issues with the NTP client:
23970- NTP client is not getting clock sync with the external NTP server.

Can you check the exact software version of the WM controller and AP (show version)?