ExpressRoute 概述ExpressRoute overview

使用 Azure ExpressRoute 可通过连接服务提供商所提供的专用连接,将本地网络扩展到 Azure 云。Azure ExpressRoute lets you extend your on-premises networks into the Microsoft cloud over a private connection facilitated by a connectivity provider. 使用 ExpressRoute 可与 Azure 等云服务建立连接。With ExpressRoute, you can establish connections to Microsoft cloud services, such as Azure.

可以从任意位置之间的 (IP VPN) 网络、点到点以太网或在共置设施上通过连接服务提供商的虚拟交叉连接来建立这种连接。Connectivity can be from an any-to-any (IP VPN) network, a point-to-point Ethernet network, or a virtual cross-connection through a connectivity provider at a co-location facility. ExpressRoute 连接不通过公共 Internet。ExpressRoute connections do not go over the public Internet. 与通过 Internet 的典型连接相比,ExpressRoute 连接提供更高的可靠性、更快的速度、更低的延迟和更高的安全性。This allows ExpressRoute connections to offer more reliability, faster speeds, lower latencies, and higher security than typical connections over the Internet. 要了解如何使用 ExpressRoute 将网络连接到 Microsoft,请参阅 ExpressRoute 连接模型For information on how to connect your network to Microsoft using ExpressRoute, see ExpressRoute connectivity models.

主要优点Key benefits

  • 通过连接服务提供商在本地网络与 Azure 云之间建立第 3 层连接。Layer 3 connectivity between your on-premises network and the Azure Cloud through a connectivity provider. 可以从任意位置之间的 (IPVPN) 网络、点到点以太网,或通过以太网交换经由虚拟交叉连接来建立这种连接。Connectivity can be from an any-to-any (IPVPN) network, a point-to-point Ethernet connection, or through a virtual cross-connection via an Ethernet exchange.
  • 通过 BGP 在网络与 Microsoft 之间进行动态路由。Dynamic routing between your network and Microsoft via BGP.
  • 在每个对等位置提供内置冗余以提高可靠性。Built-in redundancy in every peering location for higher reliability.
  • 连接运行时间 SLAConnection uptime SLA.

有关详细信息,请参阅 ExpressRoute 常见问题For more information, see the ExpressRoute FAQ.


第 3 层连接Layer 3 connectivity

Microsoft 使用 BGP(一种行业标准动态路由协议),在本地网络、Azure 中的实例和 Microsoft 公共地址之间交换路由。Microsoft uses BGP, an industry standard dynamic routing protocol, to exchange routes between your on-premises network, your instances in Azure, and Microsoft public addresses. 我们根据不同的流量配置文件来与网络建立多个 BGP 会话。We establish multiple BGP sessions with your network for different traffic profiles. 有关详细信息,请参阅 ExpressRoute 线路和路由域 一文。More details can be found in the ExpressRoute circuit and routing domains article.


每个 ExpressRoute 线路有两道连接,用于从连接服务提供商/网络边缘连接到两个 Microsoft 企业边缘路由器 (MSEE)。Each ExpressRoute circuit consists of two connections to two Microsoft Enterprise edge routers (MSEEs) from the connectivity provider / your network edge. Microsoft 要求通过连接服务提供商/网络边缘建立双重 BGP 连接 - 各自连接到每个 MSEE。Microsoft requires dual BGP connection from the connectivity provider / your network edge – one to each MSEE. 可以选择不要在一端部署冗余设备/以太网路线。You may choose not to deploy redundant devices / Ethernet circuits at your end. 但是,连接服务提供商会使用冗余设备,确保以冗余方式将连接移交给 Microsoft。However, connectivity providers use redundant devices to ensure that your connections are handed off to Microsoft in a redundant manner. 冗余的第 3 层连接配置是 Microsoft SLA 生效的条件。A redundant Layer 3 connectivity configuration is a requirement for our SLA to be valid.

与 Azure 云服务建立连接Connectivity to Azure cloud services

通过 ExpressRoute 连接可访问以下服务:ExpressRoute connections enable access to the following services:

  • Azure 服务Azure services

有关通过 ExpressRoute 支持的服务的详细列表,请访问 ExpressRoute 常见问题解答页。For a detailed list of services supported over ExpressRoute, visit the ExpressRoute FAQ page.

与地缘政治区域中的所有区域建立连接Connectivity to all regions within a geopolitical region

可以在我们的某个对等位置连接到 Azure You can connect to Azure in one of our peering locations and access regions.

例如,如果在北京通过 ExpressRoute 连接到 Azure,则能访问在上海托管的所有 Azure 云服务。For example, if you connect to Azure in Beijing through ExpressRoute, you'll have access to all Azure cloud services hosted in Shanghai.

带宽选项Bandwidth options

可以购买各种带宽的 ExpressRoute 线路。You can purchase ExpressRoute circuits for a wide range of bandwidths. 支持的带宽列表如下。The supported bandwidths are listed below. 请务必咨询连接服务提供商,以确定他们支持的带宽。Be sure to check with your connectivity provider to determine the bandwidths they support.

  • 50 Mbps50 Mbps
  • 100 Mbps100 Mbps
  • 200 Mbps200 Mbps
  • 500 Mbps500 Mbps
  • 1 Gbps1 Gbps
  • 2 Gbps2 Gbps
  • 5 Gbps5 Gbps
  • 10 Gbps10 Gbps

动态调整带宽Dynamic scaling of bandwidth

可以在不中断连接的情况下增大 ExpressRoute 线路带宽(尽最大努力)。You can increase the ExpressRoute circuit bandwidth (on a best effort basis) without having to tear down your connections. 有关详细信息,请参阅修改 ExpressRoute 线路For more information see Modifying an ExpressRoute circuit.

弹性计费模式Flexible billing models

可以选择最适合自己的计费模式。You can pick a billing model that works best for you. 请从以下计费模式中选择。Choose between the billing models listed below. 有关详细信息,请参阅 ExpressRoute 常见问题解答For more information, see ExpressRoute FAQ.

  • 无限制数据Unlimited data. 计费按月,所有入站和出站数据传输不收取费用。Billing is based on a monthly fee; all inbound and outbound data transfer is included free of charge.
  • 计量数据Metered data. 计费按月,所有入站数据传输不收取费用。Billing is based on a monthly fee; all inbound data transfer is free of charge. 出站数据传输按每 GB 数据传输计费。Outbound data transfer is charged per GB of data transfer. 数据传输费率根据区域不同而异。Data transfer rates vary by region.
  • ExpressRoute 高级版附加组件ExpressRoute premium add-on. ExpressRoute 高级版是 ExpressRoute 线路上的附加组件。ExpressRoute premium is an add-on to the ExpressRoute circuit. ExpressRoute 高级版附加组件提供以下功能:The ExpressRoute premium add-on provides the following capabilities:
    • 提高 Azure 公共和 Azure 专用对等互连的路由限制,从4,000 路由提升至 10,000 路由。Increased route limits for Azure public and Azure private peering from 4,000 routes to 10,000 routes.
    • 服务的跨区域连接。Cross-regions connectivity for services. 在任何区域创建的 ExpressRoute 线路都会能够访问位于其他区域的资源。
    • 增加了每个 ExpressRoute 线路的 VNet 链接数量,从 10 增加至更大的限制,具体取决于线路的带宽。Increased number of VNet links per ExpressRoute circuit from 10 to a larger limit, depending on the bandwidth of the circuit.


有关 ExpressRoute 的常见问题,请参阅 ExpressRoute 常见问题解答For frequently asked questions about ExpressRoute, see ExpressRoute FAQ.

后续步骤Next steps