In a multi-master replication environment, data is updated on multiple masters. Each master maintains a change log, and the changes made on each master are replicated to the other servers. Each master plays the role of supplier and consumer. Directory Server has no limits on the number of masters, allowing your multi-master replication topology to include an unlimited number of masters in multiple data centers.
You can also configure your replication topology to contain only masters, eliminating the need to route operations to consumers and simplifying your overall deployment.