Reference

RFCs

RFC 4510: LDAP: Technical Specification Road Map
RFC 4511: LDAP: The Protocol
RFC 4512: LDAP: Directory Information Models
RFC 4513: LDAP: Authentication Methods and Security Mechanisms
RFC 4514: LDAP: String Representation of Distinguished Names
RFC 4515: LDAP: String Representation of Search Filters
RFC 4516: LDAP: Uniform Resource Locator
RFC 4517: LDAP: Syntaxes and Matching Rules
RFC 4518: LDAP: Internationalized String Preparation
RFC 4519: LDAP: Schema for User Applications
RFC 2849: The LDAP Data Interchange Format (LDIF) - Technical Specification
RFC 3866: Language Tags and Ranges in the LDAP

Obsolete RFCs

RFC 2251: Lightweight Directory Access Protocol (v3)
RFC 2252: Attribute Syntax Definitions
RFC 2253: UTF-8 String Representation of Distinguished Names
RFC 2254: The String Representation of LDAP Search Filters
RFC 2255: The LDAP URL Format
RFC 2256: A Summary of the X.500(96) User Schema for use with LDAPv3
RFC 2829: Authentication Methods for LDAP
RFC 2830: Extension for Transport Layer Security

Tutorials

JNDI Tutorial