Parameters

The Registrar is perhaps the most important component in Microsoft Lync Server 2010; after all, without a Registrar, users would not be able to log on to the system, and Lync Server 2010 would not be able to keep track of users and their current status. When a user logs on to Lync Server, the endpoint the user is logging on from sends a REGISTER request to the Registrar; in turn, the server responds by challenging the client device for authentication credentials. If the client passes the challenge (that is, if the client presents a valid set of credentials), then the user is authenticated and endpoint information such as IP address, port, and user name is logged in the registration database. When a user logs off, this information is then removed from the database. In between log on and log off, the Registrar keeps status information up-to-date and helps to route messages to and from the user.

Registrar configuration settings are used to help manage endpoints and endpoint subscriptions; these settings can be applied at the global, site, or service scope. (Service scoped-settings can only be used with the Registrar service.)

The Remove-CsRegistrarConfiguration cmdlet enables you to remove Registrar configuration settings that have been applied at the site or service scope. Note that this does not delete or uninstall any Registrars; it simply removes the configuration settings that govern those Registrars. If these settings do not exist at either the site or the service scope, then a Registrar will be managed using the global settings.

Remove-CsRegistrarConfiguration can also be run against the global Registrar configuration settings. In that case, however, the settings will not be removed; that’s because the global settings cannot be deleted. Instead, all the properties in that global collection will be reset to their default values. For example, if you have changed the value of the MinEndpointExpiration property to 500 that value will be reset back to 300.

Who can run this cmdlet: By default, members of the following groups are authorized to run the Remove-CsRegistrarConfiguration cmdlet locally: RTCUniversalServerAdmins. To return a list of all the role-based access control (RBAC) roles this cmdlet has been assigned to (including any custom RBAC roles you have created yourself), run the following command from the Windows PowerShell prompt:

Get-CsAdminRole | Where-Object {$_.Cmdlets –match "Remove-CsRegistrarConfiguration e"}

Microsoft.Rtc.Management.WritableConfig.Settings.Registrar.RegistrarSettings object. Remove-CsRegistrarConfiguration accepts pipelined instances of the Registrar settings object.

None. Instead, Remove-CsRegistrarConfiguration deletes existing instances of the Microsoft.Rtc.Management.WritableConfig.Settings.Registrar.RegistrarSettings object.

-------------------------- Example 1 --------------------------

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Remove-CsRegistrarConfiguration -Identity site:Redmond

The command shown in Example 1 deletes the Registrar configuration settings assigned to the Redmond site. When these settings are deleted, Registrars in the Redmond site will automatically use the global Registrar settings.

-------------------------- Example 2 --------------------------

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Get-CsRegistrarConfiguration -Filter "service:*" | Remove-CsRegistrarConfiguration

The preceding command deletes all the Registrar configuration settings that have been assigned to the service scope. To do this, the command first calls Get-CsRegistrarConfiguration along with the Filter parameter; the filter value "service:*" limits the returned data to settings where the Identity begins with the characters "service:". The filtered collection is then piped to Remove-CsRegistrarConfiguration, which deletes each item in that collection.

-------------------------- Example 3 --------------------------

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Get-CsRegistrarConfiguration | Where-Object {$_.EnableDHCPServer -eq $True} | Remove-CsRegistrarConfiguration

In Example 3, all the Registrar configuration settings where the EnableDHCPServer property is True are deleted. To carry out this task, the command first calls Get-CsRegistrarConfiguration without any parameters; this returns a collection of all the Registrar configuration settings currently in use. That collection is then piped to the Where-Object cmdlet, which selects only those settings where the EnableDHCPServer property is equal to True. In turn, the filtered collection is piped to Remove-CsRegistrarConfiguration, which deletes each item in the collection.

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