!!! Overview
[{$pagename}] is a setting that in [LDAP policy in Active Directory] that limits number of simultaneous [LDAP] connections that a [Domain Controller] will accept.
If a connection comes in after the [Domain Controller] reaches [{$pagename}], the [Domain Controller] drops another [connection]. 

[{$pagename}] can be set using [ntdsutil.exe]

!! More Information
There might be more information for this subject on one of the following:
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* [#1] - [How to view and set LDAP policy in Active Directory by using Ntdsutil.exe|https://support.microsoft.com/en-us/help/315071/how-to-view-and-set-ldap-policy-in-active-directory-by-using-ntdsutil.exe|target='_blank'] - based on information obtained 2017-05-17- 
* [#2] - [3.1.1.3.4.6 LDAP Policies|https://docs.microsoft.com/en-us/openspecs/windows_protocols/ms-adts/3f0137a1-63df-400c-bf97-e1040f055a99|target='_blank'] - based on information obtained 2020-04-20 
* [#3] - [MaxConnections|https://docs.microsoft.com/en-us/previous-versions/iis/6.0-sdk/ms524491(v%3Dvs.90)|target='_blank'] - based on information obtained 2020-04-30