資料中心橋接 (DCB)Data Center Bridging (DCB)

適用於:Windows Server(以每年次管道)、Windows Server 2016Applies To: Windows Server (Semi-Annual Channel), Windows Server 2016

您可以使用本主題的資料中心橋接 (DCB) 簡介資訊。You can use this topic for introductory information about Data Center Bridging (DCB).

DCB 是一套協會和電子工程師 (IEEE) 標準,可讓資料中心,儲存空間、資料網路、叢集 Inter\ 處理序通訊 (IPC) 和管理流量所有分享相同乙太網路基礎結構匯集的架構。DCB is a suite of Institute of Electrical and Electronics Engineers (IEEE) standards that enable Converged Fabrics in the data center, where storage, data networking, cluster Inter-Process Communication (IPC), and management traffic all share the same Ethernet network infrastructure.

注意

本主題中,除了下列 DCB 文件已可使用In addition to this topic, the following DCB documentation is available

DCB 提供 hardware\ 為基礎的頻寬特定類型的網路流量配置,並美化乙太網路傳輸使用 priority\ 型流程控制項的可靠性。DCB provides hardware-based bandwidth allocation to a specific type of network traffic, and enhances Ethernet transport reliability with the use of priority-based flow control.

如果流量略過作業系統,便會至聚合型的網路介面卡,可能會支援網際網路小型的電腦系統介面 (iSCSI)、遠端直接記憶體存取 (RDMA) 透過乙太網路或光纖通道上乙太網路 (FCoE) 卸載,Hardware\ 型頻寬配置很重要。Hardware-based bandwidth allocation is essential if traffic bypasses the operating system and is offloaded to a converged network adapter, which might support Internet Small Computer System Interface (iSCSI), Remote Direct Memory Access (RDMA) over Ethernet, or Fiber Channel over Ethernet (FCoE).

Priority\ 型流程控制項是不可或缺上層通訊協定,光纖的通道,例如假設無失真基礎傳輸。Priority-based flow control is essential if the upper layer protocol, such as Fiber Channel, assumes a lossless underlying transport.

DCB 通訊協定及管理選項DCB Protocols and Management Options

DCB 包含下列設定通訊協定。DCB consists of the following set of protocols.

  • 美化的傳輸服務 (ETS) – IEEE 802.1Qaz,此組建上 802.1 P 802.1Q 標準Enhanced Transmission Service (ETS) – IEEE 802.1Qaz, which builds on the 802.1P and 802.1Q standards
  • 優先順序流程控制 (PFS),IEEE 802.1QbbPriority Flow Control (PFS), IEEE 802.1Qbb
  • IEEE 802.1AB,以在標準 802.1Qaz 延伸 DCB 交換通訊協定 (DCBX)。DCB Exchange Protocol (DCBX), IEEE 802.1AB, as extended in the 802.1Qaz standard.

DCBX 通訊協定可讓您設定 DCB 切換,然後就可以自動設定結束裝置,例如執行 Windows Server 2016 的電腦上。The DCBX protocol allows you to configure DCB on a switch, which can then automatically configure an end device, such as a computer running Windows Server 2016.

如果您想要切換的管理 DCB,您不需要安裝 DCB 與 Windows Server 2016 中的功能但這種方式包含一些限制。If you prefer to manage DCB from a switch, you don’t need to install DCB as a feature in Windows Server 2016, however this approach includes some limitations.

因為 DCBX 僅能通知 ETS 課程大小和 PFC 提供的主機網路介面卡,不過,Windows Server 主機通常需要 DCB,以便流量對應至 ETS 類別安裝。Because DCBX can only inform the host network adapter of ETS class sizes and PFC enablement, however, Windows Server hosts usually require that DCB is installed so that traffic is mapped to ETS classes.

Windows 應用程式通常不專為參與 DCBX 交換。Windows applications are usually not designed to participate in DCBX exchanges. 因此,從網路參數,但有相同的設定,則必須分開設定主機。Because of this, the host must be configured separately from the network switches, but with identical settings.

如果您選擇管理 DCB 從切換,您仍然可以使用 Windows PowerShell 命令 Windows Server 2016 中檢視設定。If you do choose to manage DCB from a switch, you can still view the configurations in Windows Server 2016 by using Windows PowerShell commands.

重要 DCB 功能Important DCB functionality

以下是清單摘要 DCB 提供的功能。Following is a list that summarizes the functionality that is provided by DCB.

  1. 提供交互操作 DCB\ 能力網路介面卡之間切換 DCB\ 處理能力。Provides interoperability between DCB-capable network adapters and DCB-capable switches.

  2. 提供無失真乙太網路傳輸之間執行 Windows Server 2016 和其鄰居切換經由 priority\ 型流程控制項的網路介面卡上的電腦。Provides a lossless Ethernet transport between a computer running Windows Server 2016 and its neighbor switch by turning on priority-based flow control on the network adapter.

  3. 提供交通控制 (TC) 頻寬配置百分比,其中一或多個種流量之 802.1 p 流量課程 (priority) 指示器來區分可能包含 TC 的能力。Provides the ability to allocate bandwidth to a Traffic Control (TC) by percentage, where the TC might consist of one or more classes of traffic that are differentiated by 802.1p traffic class (priority) indicators.

  4. 可讓伺服器管理員或網路系統管理員指派應用程式特定的流量課程或優先順序根據已知通訊協定、已知 TCP 日 UDP 連接埠或該應用程式所使用的 NetworkDirect 連接埠。Enables server administrators or network administrators to assign an application to a particular traffic class or priority based on well-known protocols, well-known TCP/UDP port, or NetworkDirect port used by that application.

  5. 提供 Windows Server 2016 Windows 管理檢測 (WMI) 及 Windows PowerShell 透過 DCB 管理。Provides DCB management through Windows Server 2016 Windows Management Instrumentation (WMI) and Windows PowerShell. 如需詳細資訊,請查看區段Windows PowerShell 命令 DCB稍後本主題中,除了下列主題。For more information, see the section Windows PowerShell Commands for DCB later in this topic, in addition to the following topics.

  6. 提供 DCB 管理透過 Windows Server 2016 群組原則。Provides DCB management through Windows Server 2016 Group Policy.

  7. 支援 Windows Server 2016 服務品質 (QoS) 方案的並存。Supports the coexistence of Windows Server 2016 Quality of Service (QoS) solutions.

注意

您必須先使用任何 RDMA 透過 RDMA 匯集乙太網路 (RoCE) 版本,可讓 DCB。Before using any RDMA over Converged Ethernet (RoCE) version of RDMA, you must enable DCB. 雖然不所需的網際網路寬區域 RDMA 通訊協定 (iWARP) 網路,測試發現所有 Ethernet\ 型 RDMA 技術變得更好都搭配 DCB。While not required for Internet Wide Area RDMA Protocol (iWARP) networks, testing has determined that all Ethernet-based RDMA technologies work better with DCB. 因此,您應該使用 DCB iWARP RDMA 部署。Because of this, you should consider using DCB for iWARP RDMA deployments. 如需詳細資訊,請查看遠端直接記憶體存取 (RDMA) 和切換 Embedded 小組(設定)For more information, see Remote Direct Memory Access (RDMA) and Switch Embedded Teaming (SET).

實用的 DCB 的應用程式Practical applications of DCB

許多公司擁有大型光纖通道 (FC) 儲存區域網路 (SAN) 安裝的儲存空間服務。Many organizations have large Fiber Channel (FC) storage area network (SAN) installations for storage service. FC 舊需要伺服器 FC 參數,在網路上的特殊的網路介面卡。FC SAN requires special network adapters on servers and FC switches in the network. 這些組織通常也會使用乙太網路卡和切換。These organizations typically also use Ethernet network adapters and switches.

在大部分案例中,FC 硬體會大幅價格部署比乙太網路硬體,會導致大大寫費用。In most cases, FC hardware is significantly more expensive to deploy than Ethernet hardware, which results in large capital expenditures. 此外,另一個乙太網路與 FC 舊網路介面卡和切換硬體需求需要更多空間,電源,和冷卻 datacenter,會導致其他、持續運作的費用。In addition, the requirement for separate Ethernet and FC SAN network adapter and switch hardware requires additional space, power, and cooling capacity in a datacenter, which results in additional, ongoing operational expenditures.

成本觀點,則也有許多組織合併 FC 技術儲存和資料網路服務提供其 Ethernet\ 型硬體方案的好處。From a cost perspective, it is advantageous for many organizations to merge their FC technology with their Ethernet-based hardware solution to provide both storage and data networking services.

使用 DCB Ethernet\ 型聚合型 fabric,儲存的資料網路Using DCB for an Ethernet-based converged fabric for storage and data networking

為組織已經有大量的 FC 舊,但想要從其他投資 FC 技術移轉 DCB 可讓您建置根據乙太網路匯集 fabric 儲存和資料網路。For organizations that already have a large FC SAN but want to migrate away from additional investment in the FC technology, DCB allows you to build an Ethernet based converged fabric for both storage and data networking. DCB 匯集 fabric 可以減少取得未來成本 (TCO) 簡化管理。A DCB converged fabric can reduce the future total cost of ownership (TCO) and simplify management.

誰有採用,或人員計劃收養主機創造,做為其儲存方案,DCB iSCSI 可以提供 iSCSI 流量確保效能隔離 hardware\ 協助頻寬保留。For hosters who have already adopted, or who plan to adopt, iSCSI as their storage solution, DCB can provide hardware-assisted bandwidth reservation for iSCSI traffic to ensure performance isolation. 並與其他專屬方案,DCB 是 standards--,因此較為輕鬆地部署與管理異質性網路環境中。And unlike other proprietary solutions, DCB is standards-based - and therefore relatively easy to deploy and manage in a heterogeneous network environment.

Windows Server 2016\ 型 DCB 實作可以時,可能發生匯集 fabric 方案所提供的多個原始設備製造商 (OEMs) 的問題。A Windows Server 2016-based implementation of DCB alleviates many of the issues that can occur when converged fabric solutions are provided by multiple original equipment manufacturers (OEMs).

提供多個的 Oem 專用方案實作可能無法與其他互相作用,可能會很困難管理及通常會有不同的軟體維護排程。Implementations of proprietary solutions provided by multiple OEMs might not interoperate with one another, might be difficult to manage, and will typically have different software maintenance schedules.

相較之下,Windows Server 2016 DCB standards\ 為基礎,且部署及管理 DCB 異質性網路。By contrast, Windows Server 2016 DCB is standards-based, and you can deploy and manage DCB in a heterogeneous network.

Windows PowerShell 命令 DCBWindows PowerShell Commands for DCB

有適用於 Windows Server 2016 和 Windows Server 2012 R2 DCB Windows PowerShell 命令。There are DCB Windows PowerShell commands for both Windows Server 2016 and Windows Server 2012 R2. 您可以使用的命令所有的 Windows Server 2016 中的 Windows Server 2012 R2。You can use all of the commands for Windows Server 2012 R2 in Windows Server 2016.

Windows Server 2016 Windows PowerShell 命令 DCBWindows Server 2016 Windows PowerShell Commands for DCB

下列主題適用於 Windows Server 2016 的所有的資料中心橋接 (DCB) 提供 Windows PowerShell cmdlet 描述和語法服務品質 \ (QoS) -specific cmdlet。The following topic for Windows Server 2016 provides Windows PowerShell cmdlet descriptions and syntax for all Data Center Bridging (DCB) Quality of Service (QoS)-specific cmdlets. 它會列出 cmdlet 依字母順序根據動詞 cmdlet 的開頭。It lists the cmdlets in alphabetical order based on the verb at the beginning of the cmdlet.

Windows Server 2012 R2 Windows PowerShell 命令 DCBWindows Server 2012 R2 Windows PowerShell Commands for DCB

下列主題適用於 Windows Server 2012 R2 的所有的資料中心橋接 (DCB) 提供 Windows PowerShell cmdlet 描述和語法服務品質 \ (QoS) -specific cmdlet。The following topic for Windows Server 2012 R2 provides Windows PowerShell cmdlet descriptions and syntax for all Data Center Bridging (DCB) Quality of Service (QoS)-specific cmdlets. 它會列出 cmdlet 依字母順序根據動詞 cmdlet 的開頭。It lists the cmdlets in alphabetical order based on the verb at the beginning of the cmdlet.