When it comes to inter-site, the replication will happen via site links. The replication with in each site still uses the ring topology. But apart from been domain controller, this particular domain controller is bridgehead server as well. Once it receives the update it will advertise to other domain controllers in the site. The replication between sites still need to obey the rules which is applied to control the replication. Active Directory domain services automatically selects the bridgehead server for a site.
But if need we can decide what should act as bridgehead server for site. This marks the end of this blog post. Hope this was useful. If you have any questions feel free to contact me on rebeladm live. Your email address will not be published. Save my name, email, and website in this browser for the next time I comment.
Rebeladmin Technical Blog contain more than articles. The site is older than 7 years and been updated regularly. When you have an Active Directory environment with multiple domain controllers, replication is automatically enabled and managed by the KCC service.
When you add domain controllers in an Active Directory environment, connection objects are created on each domain controller to manage replication between them. Each connection object links 2 domain controllers and must be present on the 2 domain controllers so that replication can take place between them. These connection objects are children of the "NTDS Settings" object found in each computer object associated with a domain controller.
By default, these connection objects are created automatically by the KCC service, but they can also be created or edited manually. However, be aware that if you modify one, the KCC service will no longer edit it. It will therefore be up to you to modify it again later if necessary. The Knowledge Consistency Checker KCC service is present on all domain controllers and takes care of generating the replication topology between the different domain controllers of your Active Directory environment.
Instead of having information replicated immediately between servers within a high-speed connected site, the administrator can specify to replicate information between two sites only once per night or at a time when network demands are low, allowing more bandwidth availability to replicate AD DS information. Figure 4. Site links exist between offices, and a DC in each site acts as the site link bridgehead. The site structure is completely modifiable and should roughly follow the WAN structure of an organization.
By default, only a single site is created in AD DS, and administrators must manually create additional sites to be able to optimize replication.
You can find more information about these concepts in Chapter 7. Replication of objects between DCs is accomplished through the use of a property known as originating writes. As changes are made to an object, this property is incrementally increased in value.
A DC compares its own version of this value with the one received during a replication request. If it is lower, the change is applied; if not, it is discarded. This simple approach to replication is also extremely reliable and efficient and allows for effective object synchronization. For more information about replication, including a detailed analysis of originating writes and its other key components, see Chapter 7.
Windows Server supports PowerShell commandlets that are meant to act as a replacement for legacy tools such as repadmin, which were previously used to control AD DS replication.
These commandlets, described in detail in Chapter 7, allow for fully automated replication administration and the creation of automated scripts for managing replication between DCs. I would like to receive exclusive offers and hear about products from InformIT and its family of brands. I can unsubscribe at any time. Pearson Education, Inc. This privacy notice provides an overview of our commitment to privacy and describes how we collect, protect, use and share personal information collected through this site.
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