LDAP/Local End User max limit on CUCM 12.5?

[VishalGupta8467]

Hi All,

I would like to know the max limit on CUCM 12.5 for End Users (LDAP + Local).

Thanks

[Roger Kallberg]

Not sure there is a limit for this. What is the reason for that you ask? Have you hit any limit with this or are you just making a query out of curiosity?

[VishalGupta8467]

Hi Roger



On CUCM 10.5 we have hit limit of 150000 users. If we need to add a new user, we need to delete any unused one and then add new user.



Vishal

[Jaime Valencia · Accepted solution]

That data is in the SRND in the directory chapter

[VishalGupta8467]

Hi Jaime,



I found it in SRND as suggested by you.


However, some cluster-wide constants do not increase. Chief among these are:
* Size of the configuration database
* Number of locations and regions
* Maximum number of LDAP synchronized or provisioned end users (160,000 users per cluster)



Thanks

[Roger Kallberg]

What causes you to state it does not increase? What makes you think it would increase? Not all limits changes with newer versions, in fact likely most do not.

[BalajiSivaraj49175]

The maximum number of users that a Unified CM cluster can handle is limited by the maximum size of
the internal configuration database that gets replicated between the cluster members. The maximum
number of users that can be configured or synchronized is 160,000. With more than 80,000 users the
maximum number of LDAP synchronization agreements is limited to 10, while with less than 80,000
users the total number of LDAP synchronization agreements is limited to 20