In this KB article, We have explained how to setup SSO with central authentication.
To refer more https://docs.versa-networks.com/Management_and_Orchestration/Versa_Director/Configuration/Configure_AAA
If you configure an external server to be the default authentication connector, local authentication is disabled, and users can be authenticated for login only by using that external AAA authentication server.
In this example: 22.1.3 VD acts as the Central Auth Server, And 22.1.2 VD acting as the CA client
The SSO configuration has to be made only on the Central Auth server.
Central Authentication for Provider users
Changes to be done in Central Auth server
Step1: In the usual SSO configuration, CA client IP has to be mentioned in the Director Client field.
Changes to be done in Central Auth Client
Central Authentication for Tenant users
Tenant name should be same on both directors. Made sure supported user roles presented in both directors.
Changes to be done in Central Auth server
Select the SSO IDP connector under the tenant.
Changes to be done in Central Auth Client
Select the authentication connector as Central-authentication under the organization settings.