Once your circle of trust is established by providing target Platform Deployments with the root certificates of source Platform Deployments, you need to configure the topology by setting up the relationship in Access Federation.
Example 1: Set Up a Star Topology
Consider the scenario where three Access services should be set up in a Star topology where Access-A synchronizes to Access-B and Access-C.
In this case, you need to provide Access-B and Access-C the root certificate of Access-A so that A becomes trusted by B and C.
Note: Chaining Star Topology
When creating a chain topology (e.g., a case where JPD A replicates to JPD B, which in turn replicates to JPD C), the content of JPD A will not be propagated to JPD C by default. To enable the chain topology, set the following parameter in your Access Configuration YAML file of JPD B, or any intermittent JPDs, to true: federation.outbound.forward-propagation (false by default).
Example 2: Setting Up A Full Mesh Topology
Consider the scenario where three Access services should be set up in a Full Mesh topology where each service should be able to synchronize changes to security entities to both other services.
In this case, you need to provide each Access service with the root certificates of both other services so that both are trusted.