Applies to ONTAP 9 LDAP (Lightweight Directory Access Protocol) Active Directory Authentication (AD) Issue One of the node reported failed CIFS authentication via LDAP from all available servers The n...Applies to ONTAP 9 LDAP (Lightweight Directory Access Protocol) Active Directory Authentication (AD) Issue One of the node reported failed CIFS authentication via LDAP from all available servers The node is unresponsive or unreachable in network, but it's not down Switching the LIFs manually to the other node made the authentication work However ONTAP did not use the LIF on the other node for CIFS LDAP authentication automatically