讓用來找出的下一步接近網域控制站戶端Enabling Clients to Locate the Next Closest Domain Controller

適用於:Windows Server 2016、Windows Server 2012 R2、Windows Server 2012Applies To: Windows Server 2016, Windows Server 2012 R2, Windows Server 2012

如果您執行 Windows Server 2008 或 Windows Server 2008 R2 網域控制站,您可以讓 client 的電腦可執行 Windows Vista、Windows 7、Windows Server 2008 或 Windows Server 2008 R2 網域控制站進而更有效率地找出嘗試下一個接近網站群組原則設定。If you have a domain controller that runs Windows Server 2008 or Windows Server 2008 R2 , you can make it possible for client computers that run Windows Vista, Windows 7, Windows Server 2008 , or Windows Server 2008 R2 to locate domain controllers more efficiently by enabling the Try Next Closest Site Group Policy setting. 此設定來簡化網路流量,尤其是有許多分公司和網站大型企業来協助改善網域控制站定位器(DC 定位)。This setting improves the Domain Controller Locator (DC Locator) by helping to streamline network traffic, especially in large enterprises that have many branch offices and sites.

這個新的設定會影響您設定的網站連結費用,因為它會影響網域控制站位於的訂單。This new setting can affect how you configure site link costs because it affects the order in which domain controllers are located. 適用於企業的有許多中樞網站和分公司,確保您的戶端無法透過下一步接近中樞網站時接近中樞網站中找不到網域控制站可大幅降低網路上的 Active Directory 傳輸。For enterprises that have many hub sites and branch offices, you can significantly reduce Active Directory traffic on the network by ensuring that clients fail over to the next closest hub site when they cannot find a domain controller in the closest hub site.

一般的最佳做法,您應該簡化您的網站拓撲和網站連結成本盡可能如果您可以嘗試下一個接近網站設定。As a general best practice, you should simplify your site topology and site link costs as much as possible if you enable the Try Next Closest Site setting. 許多中樞網站的企業,這可以簡化您將處理中的一個台中戶端需要無法到另一個網站的網域控制站的任何計劃。In enterprises with many hub sites, this can simplify any plans that you make for handling situations in which clients in one site need to fail over to a domain controller in another site.

根據預設,嘗試下一個接近網站設定為無法支援。By default, the Try Next Closest Site setting is not enabled. 未設定時,當 DC 定位會使用下列演算法來找出網域控制站:When the setting is not enabled, DC Locator uses the following algorithm to locate a domain controller:

  • 嘗試尋找網域控制站在相同的網站。Try to find a domain controller in the same site.

  • 如果不網域控制站於相同的網站,請嘗試網域中找到的任何網域控制站。If no domain controller is available in the same site, try to find any domain controller in the domain.

注意

這是 DC 定位用在 Active Directory 舊版相同的演算法。This is the same algorithm that DC Locator used in previous versions of Active Directory. 如需詳細資訊,請查看 [DNS 支援 Active Directory 運作方式 (http://go.microsoft.com/fwlink/?LinkId=108587)。For more information, see How DNS Support for Active Directory Works (http://go.microsoft.com/fwlink/?LinkId=108587).

如果您可以嘗試下一個接近網站設定,DC 定位使用下列的演算法尋找網域控制站:If you enable the Try Next Closest Site setting, DC Locator uses the following algorithm to locate a domain controller:

  • 嘗試尋找網域控制站在相同的網站。Try to find a domain controller in the same site.

  • 如果不網域控制站提供相同的網站,請嘗試尋找網域控制站在下一個最接近的網站。If no domain controller is available in the same site, try to find a domain controller in the next closest site. 網站是靠近有成本較高的網站連結比其他網站成本較低的網站連結。A site is closer if it has a lower site-link cost than another site with a higher site-link cost.

  • 如果不網域控制站於下一個最接近的網站,請嘗試網域中找到的任何網域控制站。If no domain controller is available in the next closest site, try to find any domain controller in the domain.

根據預設,DC 定位不會將包含唯讀網域控制站 (RODC) 時,它會判斷最接近的下一步網站的任何網站。By default, DC Locator does not consider any site that contains a read-only domain controller (RODC) when it determines the next closest site. 此外,因為僅限 Windows Server 2008 和 Windows Server 2008 R2 網域控制站支援下一步接近網站的功能,當 client 取得回應執行較舊版本的 Windows Server 的網域控制站的 DC 定位行為相同時再設定會不支援。In addition, because only Windows Server 2008 and Windows Server 2008 R2 domain controllers support the next closest site functionality, when the client gets a response from a domain controller that runs an earlier version of Windows Server, the DC Locator behavior is the same as when then setting is not enabled.

例如,假設網站拓撲四個網站的圖的網站連結值。For example, assume that a site topology has four sites with the site link values in the following illustration. 在此範例中,所有的網域控制站的寫入網域控制站的 Windows Server 2008 或 Windows Server 2008 R2 執行。In this example, all the domain controllers are writable domain controllers that run Windows Server 2008 or Windows Server 2008 R2 .

讓用來尋找俠戶端

嘗試下一個接近網站群組原則設定時在此範例中,如果 client 的電腦可執行 Windows Vista、Windows 7、Windows Server 2008,或 Windows Server 2008 R2 Site_B 在嘗試找出網域控制站,第一次嘗試尋找 Site_B 自己的網域控制站。When the Try Next Closest Site Group Policy setting is enabled in this example, if a client computer that runs Windows Vista, Windows 7, Windows Server 2008 , or Windows Server 2008 R2 in Site_B tries to locate a domain controller, it first tries to find a domain controller in its own Site_B. 如果不提供 Site_B,它會嘗試尋找網域控制站 Site_A 中。If none is available in Site_B, it tries to find a domain controller in Site_A.

未設定時,如果 client 會嘗試尋找網域控制站 Site_A、Site_C,或 Site_D Site_B 中已不網域控制站。If the setting is not enabled, the client tries to find a domain controller in Site_A, Site_C, or Site_D if no domain controller is available in Site_B.

注意

嘗試下一個接近網站自動網站涵蓋範圍搭配設定的運作方式。The Try Next Closest Site setting works in coordination with automatic site coverage. 例如如果的下一步接近網站不網域控制站,DC 定位會嘗試尋找網域控制站自動網站涵蓋範圍執行該網站。For example, if the next closest site has no domain controller, DC Locator tries to find the domain controller that performs automatic site coverage for that site.

套用嘗試下一個接近網站設定,您可以建立群組原則物件 (GPO) 並連結到您的組織的適當物件或修改讓它會影響所有戶端執行 Windows Vista、Windows 7、Windows Server 2008 或 Windows Server 2008 R2 網域中的預設網域原則。To apply the Try Next Closest Site setting, you can create a Group Policy object (GPO) and link it to the appropriate object for your organization, or you can modify the Default Domain Policy to have it affect all clients that run Windows Vista, Windows 7, Windows Server 2008 , or Windows Server 2008 R2 in the domain. 如需詳細資訊,了解如何設定嘗試下一個接近網站設定,請可讓戶端中找不到網域控制站下一步接近網站For more information about how to set the Try Next Closest Site setting, see Enable Clients to Locate a Domain Controller in the Next Closest Site.