!!! Overview
[{$pagename}] is dependent on the [LDAP Server Implementation] and the [LDAP Protocol Exchange] you are performing.

During a [bind Request], the [Distinguished Name] [SHOULD NOT] be case sensitive regardless of the makeup of the attributes ([RDNs]) within the [Distinguished Name].

During a [Search Request] [{$pagename}] is dependent on the [LDAP Server Implementation]:
* [Microsoft Active Directory] - [Distinguished Names] are not case sensitive.
* [eDirectory] - [Distinguished Names] are not case sensitive, even if one of the naming attributes is case sensitive."

! [Compare Request] and [Search Request]
According to the [LDAP] [RFC 4517] and the [distinguishedNameMatch] [MatchingRule], each [Relative Distinguished Name] ([RDN]) which is part of the [{$pagename}] should be evaluated independently. This implies if a [RDN] within the  [Distinguished Name] is [case-sensitive] then the comparison should be done [case-insensitive] for that [RDN]. Although most common  [Distinguished Name] attributes are [case-insensitive] ([CommonName], [Organization], , [Organization][Domain]) it would be possible to have a [case-insensitive] [RDN] component within the [Distinguished Name] which should be evaluated in a [case-sensitive] fashion according to the [MatchingRule] that applies ot the [LDAPSyntaxes].

!! More Information
There might be more information for this subject on one of the following:
[{ReferringPagesPlugin before='*' after='\n' }]
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* [#1] - [http://www.informit.com/articles/article.aspx?p=101405&seqNum=7|http://www.informit.com/articles/article.aspx?p=101405&seqNum=7|target='_blank'] - based on information obtained 2016-09-13-