Network Management

Im getting a lot of these errors on 1 of my controllers.

ntpd[28529]: Invalid-NAK error at 100630

However after a search, i cant seem to find out what it means.

Do you have an NTP server configured on your controller?  What is the configuration?

#show ntp status

Authentication:         enabled
time since restart:     223808
time since reset:       223808
packets received:       483
packets processed:      0
current version:        446
previous version:       2
declined:               0
access denied:          24
bad length or format:   0
bad authentication:     0
rate exceeded:          0
system peer:          0.0.0.0
system peer mode:     unspec
leap indicator:       11
stratum:              16
precision:            -19
root distance:        0.00000 s
root dispersion:      3.35712 s
reference ID:         [73.78.73.84]
reference time:       00000000.00000000  Thu, Feb  7 2036  1:28:16.000
system flags:         auth monitor ntp kernel stats
jitter:               0.000000 s
stability:            0.000 ppm
broadcastdelay:       -0.049988 s
authdelay:            0.000000 s

------------------------------------------------------------

 #show ntp servers

NTP Server Table Entries
------------------------

Flags:     * Selected for synchronization
           + Included in the final selection set
           # Selected for synchronization but distance exceeds maximum
           - Discarded by the clustering algorithmn
           = mode is client

  remote                                  local                                    st   poll   reach    delay     offset      disp

=========================================================================================================================================

=xxx.xxx.xxx.41                           xxx.xx.xxx.20                            16 1024       0    0.00000     0.000000    3.99217

=xxx.xxx.xxx.41                           xxx.xx.xxx.20                            16 1024       0    0.00000     0.000000    3.99217

access denied:          24

Choose another NTP server

I totally missed that. Thanks Joseph!

Can you confirm the NTP servers are reachable from the controller and correctly responding to NTP requests.

In the "st" column, if you have the value of "16" then this means NTP is not updating correctly. Also note that offset and disp are not returning values either.

Turns out the authkey was wrong somehow.

Thanks for the help!