What is the method used to integrate Active Directory with Cisco ISE?

The integration of Active Directory (AD) with Cisco ISE is achieved using LDAP (Lightweight Directory Access Protocol). This method is optimal for accessing and managing directory information services over an internet protocol network.

Utilizing LDAP for this integration allows Cisco ISE to establish communication with Active Directory for user authentication and authorization purposes. This involves querying user account information and group memberships directly from the AD, which is essential for implementing identity-based policies within ISE. By leveraging LDAP, ISE can effectively perform tasks such as user authentication against AD credentials, employing security features that are inherent in the LDAP protocol, such as Secure Sockets Layer (SSL) encryption for secure data transmission.

Other methods mentioned, such as REST API and RADIUS Protocol, serve different purposes in networking and authentication but are not the primary means for integrating Active Directory with ISE. REST API is more about interacting with web services, while RADIUS is typically used for authentication and accounting purposes, not direct directory access for user information. SNMP is primarily used for network management and monitoring rather than directory services.