Failed to communicate with LDAP server

Unanswered Question
Dec 3rd, 2009


I have configured CUCM to sync up with the customers LDAP server and using the same OU for LDAP authentication, but when you log into https://cmipaddr/ccmuser the user receives the above error message - Failed to communicate with LDAP server

Under the Users Group, Standard CCM End Users the users are there and have the correct privileges that should log them into ccmuser account.

I have attached the error messages and screen shots for the LDAP and end user pages.



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j.huizinga Thu, 12/03/2009 - 05:50

I think you must have general LDAP authentication errors, not specific ccmuser page.

Install Click-2-call or TSP and see if these programs authenticates correctly.


JAMES WEST Wed, 12/09/2009 - 04:07

Hi JH,

Sorry for not getting sooner.

I have downloaded and tested the Click to Call in my test lab and it works OK against a End User login (no LDAP configured). I then tested this against our customers site with LDAP Authentication and the user credentials failed to login in Click to Call.

Is there anything else to try against the LDAP server?



j.huizinga Thu, 12/10/2009 - 00:00


From your screen shots it seems that you don't have the same search path for Directory and Authentication.

If possible make it the same, or make the authentication path to include all, for example:  DC=xxxx,DC=com


JAMES WEST Thu, 12/10/2009 - 00:52


I have attached the directory configuration we have in place -

LDAP Directory

CN=spickins,CN=users,DC=** This is the same DC for all Directories **,DC=local
OU=Staff,DC=** As above **,DC=Local

CN=spickins,CN=users,DC=** This is the same DC for all Directories **,DC=local
OU=Support,DC=** As above **,DC=local

CN=spickins,CN=users,DC=** This is the same DC for all Directories **,DC=local
OU=Computer Techs,DC=** As above **,DC=Local

LDAP Authentication

CN=spickins,CN=users,DC=** This is using the same name as in the Directory DC **,DC=local
OU=Support,OU=Staff,OU=Computer Techs,DC=** Same DC as above **,DC=DC01
Server Information -

We are using 3 directories for each OU and the under the Authentication we have collated the OU's. The information is eing passed into the directories, but the authentication part does not work as l would have thought.

Can you let me know if you think the above structure for the Directories/Authentication looks OK?




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