LDAP Error message

Unanswered Question
Jun 21st, 2010
User Badges:


We have a CUCM 7.1 cluster & Unity Connection 7.1 both integrated with Microsoft AD. All is working fine & has been for several years........but i just noticed something recently when i forced a manual sync.

It comes up with error "Failed to Connect to ldap://<IP ADDRESS>:389" and also "Update Successful". The IP address in the error message is the IP of the redundant AD server. This same error appears on CUCM & Unity Connection when forcing a manual sync.

So my question is.....is this normal behaviour? Will it only connect to the primary AD server unless it is unreachable?

I can ping both AD servers from CUCM Publisher



  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 0 (0 ratings)
htluo Mon, 06/21/2010 - 05:53
User Badges:
  • Red, 2250 points or more

Maybe port 389 was disabled on the redundant AD?

You may test the port connectivity by using telnet from Windows command prompt.

telnet ip_address 389



rchaseling Mon, 06/21/2010 - 08:43
User Badges:

Thanks Michael......shouldn't have believed client's assumption that there was nothing wrong with the AD server without first checking it myself

Reboot of AD server fixed issue


This Discussion