Creates a new Active Directory site link for in managing replication.
Active Directory · Risk: High · Documentation Verified
Last verified: 2026-10-26
Microsoft ActiveDirectory reference: Creates a new Active Directory site link for in managing replication. The syntax and selected example below are adapted from the pinned Windows Server 2025 reference. Module availability, target configuration and delegated permissions determine whether it can run in your environment. Documentation and parameter text: Microsoft, CC BY 4.0; formatting adapted by Cmdlet World. No execution testing is claimed.
Use an account with the target resource permissions documented for New-ADReplicationSiteLink. Modifying administrative cmdlets may require elevation or delegated administration. This catalog does not assert that ordinary users can execute the command.
Supported environments
Windows / ActiveDirectory · Windows Server 2025 documentation; feature/module prerequisites apply
Parameters
-AuthType
Specifies the authentication method to use. The acceptable values for this parameter are: - Negotiate or 0 - Basic or 1 The default authentication method is Negotiate. A Secure Sockets Layer (SSL) connection is required for the Basic authentication method.
-Confirm
Prompts you for confirmation before running the cmdlet.
-Cost
Specifies the cost to be placed on the site link. For more information on determining the cost, see Determining the Cost in the TechNet Library: http://go.microsoft.com/fwlink/?LinkId=221871.
-Credential
Specifies the user account credentials to use to perform this task. The default credentials are the credentials of the currently logged on user unless the cmdlet is run from an Active Directory module for Windows PowerShell provider drive. If the cmdlet is run from such a provider drive, the account associated with the drive is the default. To specify this parameter, you can type a user name, such as User1 or Domain01\User01 or you can specify a PSCredential object. If you specify a user name for this parameter, the cmdlet prompts for a password. You can also create a PSCredential object by using a script or by using the Get-Credential cmdlet. You can then set the *Credential* parameter to the PSCredential object. If the acting credentials do not have directory-level permission to perform the task, Active Directory module for Windows PowerShell returns a terminating error.
-Description
Specifies a description of the object. This parameter sets the value of the Description property for the object. The Lightweight Directory Access Protocol (LDAP) display name (ldapDisplayName) for this property is description.
-Instance
Specifies an instance of a site link object to use as a template for a new site link object. You can use an instance of an existing site link object as a template or you can construct a new site link object by using the Windows PowerShell command line or by using a script. Method 1: Use an existing site link object as a template for a new object. To retrieve an instance of an existing site link object, use a cmdlet such as Get-ADReplicationSiteLink. Then provide this object to the *Instance* parameter of the New-ADReplicationSiteLink cmdlet to create a new Active Directory object. You can override property values of the new object by setting the appropriate parameters. Method 2: Create a new ADReplicationSiteLink and set the property values by using the Windows PowerShell command line interface. Then pass this object to the Instance parameter of the New-ADReplicationSiteLink cmdlet to create the new site link object. Note: Specified attributes are not validated, so attempting to set attributes that do not exist or cannot be set raises an error.
-InterSiteTransportProtocol
Specifies a valid intersite transport protocol option. The acceptable values for this parameter are: - IP - SMTP
-Name (required)
Specifies the name of the site link. This parameter sets the Name property of the Active Directory object. The LDAP display name (ldapDisplayName) of this property is name.
-OtherAttributes
Specifies object attribute values for attributes that are not represented by cmdlet parameters. You can set one or more parameters at the same time with this parameter. If an attribute takes more than one value, you can assign multiple values. To identify an attribute, specify the LDAPDisplayName (ldapDisplayName) defined for it in the Active Directory schema. Syntax: To specify a single value for an attribute: -OtherAttributes @{'AttributeLDAPDisplayName'=value} To specify multiple values for an attribute -OtherAttributes @{'AttributeLDAPDisplayName'=value1,value2,...} You can specify values for more than one attribute by using semicolons to separate attributes. The following syntax shows how to set values for multiple attributes: -OtherAttributes @{'Attribute1LDAPDisplayName'=value; 'Attribute2LDAPDisplayName'=value1,value2;...}
-PassThru
Returns an object representing the item with which you are working. By default, this cmdlet does not generate any output.
-ReplicationFrequencyInMinutes
Species the frequency, in minutes, for which replication will occur where this site link is in use between sites. Active Directory preserves bandwidth between sites by minimizing the frequency of replication and by allowing you to schedule the availability of site links for replication. By default, intersite replication across each site link occurs every 180 minutes (3 hours). You can adjust this frequency to match your specific needs. Be aware that increasing this frequency increases the amount of bandwidth used by replication.
-ReplicationSchedule
Specifies the default replication schedule for any connections within this site link (intra-site replication). This allows you to schedule the availability of site links for use by replication. By default, a site link is available to carry replication traffic 24 hours a day, 7 days a week. You can limit this schedule to specific days of the week and times of day. You can, for example, schedule intersite replication so that it only occurs after normal business hours.
-Server
Specifies the Active Directory Domain Services (AD DS) instance to connect to, by providing one of the following values for a corresponding domain name or directory server. The service may be any of the following: Active Directory Lightweight Domain Services (AD LDS), AD DS, or Active Directory snapshot instance. Specify the AD DS instance in one of the following ways: Domain name values: - Fully qualified domain name - NetBIOS name Directory server values: - Fully qualified directory server name - NetBIOS name - Fully qualified directory server name and port The default value for this parameter is determined by one of the following methods in the order that they are listed: - By using the *Server* value from objects passed through the pipeline - By using the server information associated with the AD DS Windows PowerShell provider drive, when the cmdlet runs in that drive - By using the domain of the computer running Windows PowerShell
-SitesIncluded
Specifies the list of sites included in the site link.
-WhatIf
Shows what would happen if the cmdlet runs. The cmdlet is not run.
Prerequisites
Windows with the ActiveDirectory module and the Windows feature or management tools that provide it. Confirm target connectivity and version compatibility using the linked Microsoft reference.
Security considerations
This cmdlet changes system state. Review every target and parameter in the official reference, test outside production, and prepare an appropriate backup or rollback. Do not execute the example automatically.
This command creates a new site link named NorthAmerica-Europe linking the two sites NorthAmerica and Europe. Source: Microsoft, CC BY 4.0; transcript prompt/output removed. This example was not executed.