"Connectivity Error" is displayed in SmartView Monitor for several Domain Controllers.
Output of "adlog a dc" command on Identity Awareness Gateway shows "no connection" status for these Domain Controllers.
adlog a dc
my.domain.com 192.168.0.2 4870 no connection
The "test_ad_connectivity" tool (sk100406) on Identity Awareness Gateway returns success for both LDAP and WMI.
More than 256 Domain Controllers are configured for the ADQuery.
Current limit of Domain Controllers for ADQuery is 256. If there are more than 256 DCs configured for the ADQuery, Identity Awareness Gateway may lose connection with random DC.