Access Points (AP4600) unsync from NTP

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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.
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Sean Tutor

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Posted 3 years ago

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Chad Smith, Alum

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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)?



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Sean Tutor

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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?
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Chad Smith, Alum

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Sean,

You can upgrade remotely as along as the WM controller has access to an FTP or TFTP server where it can download the new image file.  Example CLI output of upgrade options and TFTP upgrade below:

L3L_K2_U41_WM1#upgrade ?  FILE  Location of firmware image
               usb1:/path/file
        
  URL   Location of firmware image 
        URLs:  tftp://<hostname|IP>[:port]/path/file 
                ftp://<user>:<passwd>@<hostname|IP>[:port]/path/file 
                sftp://<user>:<passwd>@<hostname|IP>[:port]>/path/file 
                http://<hostname|IP>[:port]/path/file 
                cf:/path/file 
                usb<n>:/path/file
L3L_K2_U41_WM1#upgrade tftp://10.67.51.99/WM3600-5.4.4.0-007R.img 
Running from partition /dev/mtdblock6
Validating image file header
Making file system
Extracting files (this may take some time).........................................................................................................................................................
Control C disabled
Version of firmware update file is 5.4.4.0-007R
Removing unneeded files from flash:/crashinfo directory
FPGA firmware version is already at version 1_26, no need to upgrade
PoE updates are handled via a patch file
Power Supervisor updates are handled via a patch file
Checking if boot sector needs to be upgraded
Boot Sector version 00008, image file bootsector ver 00008, no change required
Writing Kernel to /dev/mtd5
Writing BootOS to /dev/mtd16
Successful
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Sean Tutor

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Alright, I downloaded the firmware update.  Created a FTP server since this place doesn't have one, and I'm able to download the files, however I keep getting an error Firmware upgrade failed.  update error. Bad image header, Invalid Image file. 

I'm updating from the version I listed previously to 5.4.4.0.  Is the error caused by me skipping to this version?  Do I have to install 5.4.4.1 then .2 then .3?  Because that's going to be very annoying.
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Chad Smith, Alum

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Sean,

You can upgrade directly from v5.4.0 to v5.4.4.  I just realized my example was using a WM3600.  The WM3400 has it's own image file.  Make sure you are using the WM3400 image.  Also, maybe try downloading the file again.  Maybe it was somehow corrupted?  
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Sean Tutor

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You answered my question if you'd like to close this.  I'll have to contact you guys on how to get the FTP to actually work.