Get-ADRootDSE

Get-ADRootDSE

Gets the root of a Directory Server information tree.

Syntax

Parameter Set: Default
Get-ADRootDSE [-AuthType <ADAuthType> ] [-Credential <PSCredential> ] [-Properties <String[]> ] [-Server <String> ] [ <CommonParameters>]

Detailed Description

The Get-ADRootDSE cmdlet gets the conceptual object representing the root of the directory information tree of a directory server. This tree provides information about the configuration and capabilities of the directory server, such as the distinguished name for the configuration container, the current time on the directory server, and the functional levels of the directory server and the domain.

Parameters

-AuthType<ADAuthType>

Specifies the authentication method to use. Possible values for this parameter include:

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.

The following example shows how to set this parameter to Basic.

-AuthType Basic

-Credential<PSCredential>

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 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 The following example shows how to create credentials.

$AdminCredentials = Get-Credential "Domain01\User01"

The following shows how to set the Credential parameter to these credentials.

-Credential $AdminCredentials

If the acting credentials do not have directory-level permission to perform the task, Active Directory PowerShell returns a terminating error.

-Properties<String[]>

Specifies the properties of the output object to retrieve from the server. Use this parameter to retrieve properties that are not included in the default set.

Specify properties for this parameter as a comma-separated list of names. To display all of the attributes that are set on the object, specify * (asterisk).

To specify an individual extended property, use the name of the property. For properties that are not default or extended properties, you must specify the LDAP display name of the attribute.

To retrieve properties and display them for an object, you can use the Get-* cmdlet associated with the object and pass the output to the Get-Member cmdlet. The following examples show how to retrieve properties for a group where the Administrator's group is used as the sample group object.

Get-ADGroup -Identity Administrators | Get-Member

To retrieve and display the list of all the properties for an ADGroup object, use the following command:

Get-ADGroup -Identity Administrators -Properties *| Get-Member

The following examples show how to use the Properties parameter to retrieve individual properties as well as the default, extended or complete set of properties.

To retrieve the extended properties "OfficePhone" and "Organization" and the default properties of an ADUser object named "SaraDavis", use the following command:

GetADUser -Identity SaraDavis -Properties OfficePhone,Organization

To retrieve the properties with LDAP display names of "otherTelephone" and "otherMobile", in addition to the default properties for the same user, use the following command:

GetADUser -Identity SaraDavis -Properties otherTelephone, otherMobile |Get-Member

-Server<String>

Specifies the Active Directory Domain Services 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, Active Directory Domain Services or Active Directory Snapshot instance.

Domain name values:

Fully qualified domain name

Examples: corp.contoso.com

NetBIOS name

Example: CORP

Directory server values:

Fully qualified directory server name

Example: corp-DC12.corp.contoso.com

NetBIOS name

Example: corp-DC12

Fully qualified directory server name and port

Example: corp-DC12.corp.contoso.com:3268

The default value for the Server parameter is determined by one of the following methods in the order that they are listed:

-By using Server value from objects passed through the pipeline.

-By using the server information associated with the Active Directory PowerShell provider drive, when running under that drive.

-By using the domain of the computer running Powershell.

The following example shows how to specify a full qualified domain name as the parameter value.

-Server "corp.contoso.com"

<CommonParameters>

This cmdlet supports the common parameters: -Verbose, -Debug, -ErrorAction, -ErrorVariable, -OutBuffer, and -OutVariable. For more information, see    about_CommonParameters (https://go.microsoft.com/fwlink/p/?LinkID=113216).

Inputs

The input type is the type of the objects that you can pipe to the cmdlet.

• None

Outputs

The output type is the type of the objects that the cmdlet emits.

• Microsoft.ActiveDirectory.Management.ADRootDSE

  An ADRootDSE object that represents the data tree for the specified directory server is output by this cmdlet.

Examples

-------------------------- EXAMPLE 1 --------------------------

Description

-----------

Get the rooDSE from the default domain controller.

C:\PS>Get-ADRootDSE


configurationNamingContext    : CN=Configuration,DC=Fabrikam,DC=com
currentTime                   : 3/18/2009 11:12:55 AM
defaultNamingContext          : DC=Fabrikam,DC=com
dnsHostName                   : FABRIKAM-DC1.Fabrikam.com
domainControllerFunctionality : Windows2008R2
domainFunctionality           : Windows2003Domain
dsServiceName                 : CN=NTDS Settings,CN=FABRIKAM-DC1,CN=Servers,CN=Default-First-Site-Name,CN=Sites,CN=Configuration,DC=Fabrikam,DC=com
forestFunctionality           : Windows2003Forest
highestCommittedUSN           : 23015
isGlobalCatalogReady          : {TRUE}
isSynchronized                : {TRUE}
ldapServiceName               : Fabrikam.com:FABRIKAM-DC1$@FABRIKAM.COM
namingContexts                : {DC=Fabrikam,DC=com, CN=Configuration,DC=Fabrikam,DC=com, CN=Schema,CN=Configuration,DC=Fabrikam,DC=com, DC=DomainDnsZones,DC=Fabrikam,DC=com...}
rootDomainNamingContext       : DC=Fabrikam,DC=com
schemaNamingContext           : CN=Schema,CN=Configuration,DC=Fabrikam,DC=com
serverName                    : CN=FABRIKAM-DC1,CN=Servers,CN=Default-First-Site-Name,CN=Sites,CN=Configuration,DC=Fabrikam,DC=com
subschemaSubentry             : CN=Aggregate,CN=Schema,CN=Configuration,DC=Fabrikam,DC=com
supportedCapabilities         : {1.2.840.113556.1.4.800 (LDAP_CAP_ACTIVE_DIRECTORY_OID), 1.2.840.113556.1.4.1670 (LDAP_CAP_ACTIVE_DIRECTORY_V51_OID), 1.2.840.113556.1.4.1791 (LDAP_CAP_ACTIVE_DIRECTORY_LDAP_INTEG_OID), 1.2.840.113556.1.4.1935 (LDAP_CAP_ACTIVE_DIRECTORY_V61_OID)...}
supportedControl              : {1.2.840.113556.1.4.319 (LDAP_PAGED_RESULT_OID_STRING), 1.2.840.113556.1.4.801 (LDAP_SERVER_SD_FLAGS_OID), 1.2.840.113556.1.4.473 (LDAP_SERVER_SORT_OID), 1.2.840.113556.1.4.528 (LDAP_SERVER_NOTIFICATION_OID)...}
supportedLDAPPolicies         : {MaxPoolThreads, MaxDatagramRecv, MaxReceiveBuffer, InitRecvTimeout...}
supportedLDAPVersion          : {3, 2}
supportedSASLMechanisms       : {GSSAPI, GSS-SPNEGO, EXTERNAL, DIGEST-MD5}

-------------------------- EXAMPLE 2 --------------------------

Description

-----------

Get the rootDSE information including the supportedExtension property for Fabrikam-RODC1 server.

C:\PS>Get-ADRootDSE -Server Fabrikam-RODC1 -Properties supportedExtension


configurationNamingContext    : CN=Configuration,DC=Fabrikam,DC=com
currentTime                   : 3/18/2009 11:12:55 AM
defaultNamingContext          : DC=Fabrikam,DC=com
dnsHostName                   : FABRIKAM-RODC1.Fabrikam.com
domainControllerFunctionality : Windows2008R2
domainFunctionality           : Windows2003Domain
dsServiceName                 : CN=NTDS Settings,CN=FABRIKAM-RODC1,CN=Servers,CN=Default-First-Site-Name,CN=Sites,CN=Configuration,DC=Fabrikam,DC=com
forestFunctionality           : Windows2003Forest
highestCommittedUSN           : 23015
isGlobalCatalogReady          : {TRUE}
isSynchronized                : {TRUE}
ldapServiceName               : Fabrikam.com:FABRIKAM-RODC1$@FABRIKAM.COM
namingContexts                : {DC=Fabrikam,DC=com, CN=Configuration,DC=Fabrikam,DC=com, CN=Schema,CN=Configuration,DC=Fabrikam,DC=com, DC=DomainDnsZones,DC=Fabrikam,DC=com...}
rootDomainNamingContext       : DC=Fabrikam,DC=com
schemaNamingContext           : CN=Schema,CN=Configuration,DC=Fabrikam,DC=com
serverName                    : CN=FABRIKAM-RODC1,CN=Servers,CN=Default-First-Site-Name,CN=Sites,CN=Configuration,DC=Fabrikam,DC=com
subschemaSubentry             : CN=Aggregate,CN=Schema,CN=Configuration,DC=Fabrikam,DC=com
supportedCapabilities         : {1.2.840.113556.1.4.800 (LDAP_CAP_ACTIVE_DIRECTORY_OID), 1.2.840.113556.1.4.1670 (LDAP_CAP_ACTIVE_DIRECTORY_V51_OID), 1.2.840.113556.1.4.1791 (LDAP_CAP_ACTIVE_DIRECTORY_LDAP_INTEG_OID), 1.2.840.113556.1.4.1935 (LDAP_CAP_ACTIVE_DIRECTORY_V61_OID)...}
supportedControl              : {1.2.840.113556.1.4.319 (LDAP_PAGED_RESULT_OID_STRING), 1.2.840.113556.1.4.801 (LDAP_SERVER_SD_FLAGS_OID), 1.2.840.113556.1.4.473 (LDAP_SERVER_SORT_OID), 1.2.840.113556.1.4.528 (LDAP_SERVER_NOTIFICATION_OID)...}
supportedExtension            : {1.3.6.1.4.1.1466.20037, 1.3.6.1.4.1.1466.101.119.1, 1.2.840.113556.1.4.1781, 1.3.6.1.4.1.4203.1.11.3}
supportedLDAPPolicies         : {MaxPoolThreads, MaxDatagramRecv, MaxReceiveBuffer, InitRecvTimeout...}
supportedLDAPVersion          : {3, 2}
supportedSASLMechanisms       : {GSSAPI, GSS-SPNEGO, EXTERNAL, DIGEST-MD5}

-------------------------- EXAMPLE 3 --------------------------

Description

-----------

Get the rootDSE information of FABRIKAM-ADLDS1 using the FABRIKAM\user1 credentials.

C:\PS>Get-ADRootDSE -Server "FABRIKAM-ADLDS1.Fabrikam.com:60000" -Credential "FABRIKAM\User1"

configurationNamingContext    : CN=Configuration,CN={9131D98B-E210-480F-A95D-24F9396898CA}
currentTime                   : 3/18/2009 11:40:19 AM
dnsHostName                   : FABRIKAM-ADLDS1.Fabrikam.com
domainControllerFunctionality : Windows2008R2
dsServiceName                 : CN=NTDS Settings,CN=FABRIKAM-ADLDS1$instance1,CN=Servers,CN=Default-First-Site-Name,CN=Sites,C
N=Configuration,CN={9131D98B-E210-480F-A95D-24F9396898CA}
forestFunctionality           : Windows2003Forest
highestCommittedUSN           : 13967
isSynchronized                : {TRUE}
namingContexts                : {CN=Configuration,CN={9131D98B-E210-480F-A95D-24F9396898CA}, CN=Schema,CN=Configuration,CN={9131D98B-E210-480F-A95D-24F9396898CA}, DC=AppNC}
schemaNamingContext           : CN=Schema,CN=Configuration,CN={9131D98B-E210-480F-A95D-24F9396898CA}
serverName                    : CN=FABRIKAM-ADLDS1$instance1,CN=Servers,CN=Default-First-Site-Name,CN=Sites,CN=Configuration,CN={9131D98B-E210-480F-A95D-24F9396898CA}
subschemaSubentry             : CN=Aggregate,CN=Schema,CN=Configuration,CN={9131D98B-E210-480F-A95D-24F9396898CA}
supportedCapabilities         : {1.2.840.113556.1.4.1851 (LDAP_CAP_ACTIVE_DIRECTORY_ADAM_OID), 1.2.840.113556.1.4.1670 (LDAP_CAP_ACTIVE_DIRECTORY_V51_OID), 1.2.840.113556.1.4.1791 (LDAP_CAP_ACTIVE_DIRECTORY_LDAP_INTEG_OID), 1.2.840.113556.1.4.1935 (LDAP_CAP_ACTIVE_DIRECTORY_V61_OID)...}
supportedControl              : {1.2.840.113556.1.4.319 (LDAP_PAGED_RESULT_OID_STRING), 1.2.840.113556.1.4.801 (LDAP_SERVER_SD_FLAGS_OID), 1.2.840.113556.1.4.473 (LDAP_SERVER_SORT_OID), 1.2.840.113556.1.4.528 (LDAP_SERVER_NOTIFICATION_OID)...}
supportedLDAPPolicies         : {MaxPoolThreads, MaxDatagramRecv, MaxReceiveBuffer, InitRecvTimeout...}
supportedLDAPVersion          : {3, 2}
supportedSASLMechanisms       : {GSSAPI, GSS-SPNEGO, EXTERNAL, DIGEST-MD5}