Configuring Intersite Replication
This lesson introduces you to the tasks involved in the configuration of intersite replication. By creating site links and configuring their cost, replication frequency, and replication availability, you provide Active Directory with information about how to use these connections to replicate directory data. Optionally, you can also designate a preferred bridgehead server, create site link bridges, and create and configure connection objects to meet your organization’s replication needs.
Configuring Intersite Replication
To configure intersite replication you must complete the following tasks:
1.Create site links.
2.Configure site link attributes.
3.Designate a preferred bridgehead server (optional).
4.Create site link bridges (optional).
5.Create and configure connection objects (optional).
Creating Site Links
When you install Active Directory on the first domain controller in a site, the Active Directory Installation Wizard automatically creates an object named DEFAULTIP-SITELINK in the IP container for the first default site, also created by the Active Directory Installation Wizard. You must create subsequent site links separately. When your first domain controller has been installed, you can rename the 70-620 practice test to the name you want to use for the site link.
Replication Transport Protocols
Directory information can be exchanged over site links using one of the following protocols:
Directory Service Remote Procedure Call (DS-RPC) Designated in the Windows Server 2003 operating system as IP. Choose IP replication for a site
link when there is a live, reliable connection between two or more domain controllers in different sites. IP site links communicate synchronously, meaning each replication transaction must complete before another can start. By default, intersite IP replication adheres to replication schedules and does not
require a certificate authority (CA).
Inter-Site Messaging-Simple Mail Transport Protocol (ISM-SMTP) Designated in the Windows Server 2003 operating system as SMTP. Choose SMTP replication
when the network connections are unreliable or not always available. SMTP site links communicate asynchronously, meaning each replication transaction does not need to complete before another can start because the transaction can be stored until the destination server is available. Because SMTP is asynchronous, it does not adhere to replication schedules and requires the installation and configuration of a CA. The free Microsoft certification practice questions CA signs SMTP messages that are exchanged between domain controllers, ensuring the authenticity of directory updates.
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