Option 1: Default Behavior

If the network is fully routed and there is no need to control the Active Directory replication flow, then leave the transitivity enabled for all site links by leaving the Bridge All Site Links option enabled. This is the default state.

By allowing all transitivity across all sites, any domain controller in a site can create a direct replication partner with another domain controller in another site. This simplifies replication in that there is no need to restrict or define which sites a domain controller can use to search for replication partners.

This may become an issue with larger implementations that are based on a hub-and-spoke model. By bridging all site links, there is no control on which domain controller is ...

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