Azure VPN Gateway 和 ExpressRoute 关系选择的对比

As part of a hybrid cloud deployment at Contoso, you need to connect Contoso’s on-premises datacenter to Azure. The solution you choose should minimize expense during the low-scale pilot deployment. Which option will you choose?


这个题目的说法就是 VPN ,想省钱的话就 VPN 吧。

如果不想省钱或者大企业有足够的预算和人力资源,那么就用ExpressRoute 。

典型就是如何选择最优的方案。

同时请参考:
Azure Point-to-Site VPN 概念与作用Azure Site-to-Site VPN 概念与作用

Excellent question. For a low-scale pilot deployment where the primary goal is to minimize expense, the best option is:

An Azure VPN Gateway (creating a Site-to-Site VPN)


Why the VPN Gateway is the Right Choice:

  1. Lowest Cost: This is the most significant factor. A Site-to-Site VPN leverages your existing public internet connection. You do not need to purchase expensive, dedicated private circuits from a telecommunications provider. The costs are primarily the hourly rate for the Azure VPN Gateway (which has low-cost SKUs like Basic and VpnGw1 perfect for pilots) and data egress charges.

  2. Fast and Simple Deployment: You can configure a Site-to-Site VPN in a matter of hours. It is a software-defined configuration that doesn’t require physical hardware installation or coordination with third-party providers, which is ideal for getting a pilot project up and running quickly.

  3. Sufficient for a Pilot: For a “low-scale” deployment, the performance and bandwidth provided by a VPN over the internet are almost always sufficient. You’ll be able to test connectivity, deploy virtual machines, and synchronize small amounts of data without issue.

Why Not Other Options?

  • Azure ExpressRoute: This is the alternative for connecting an on-premises datacenter. However, it is not suitable for this scenario.
    • High Cost: ExpressRoute involves a dedicated, private connection through a connectivity partner (like AT&T, Verizon, Equinix). This comes with significant monthly costs for both the provider’s circuit and the Azure ExpressRoute port, making it far more expensive.
    • Complex Setup: It can take weeks or even months to provision an ExpressRoute circuit, which is far too slow and involved for a pilot.
    • Overkill: ExpressRoute is designed for high-throughput, mission-critical production workloads that require predictable low latency and high security, none of which are priorities for an inexpensive pilot.

Comparison at a Glance

Feature Azure VPN Gateway (Site-to-Site) Azure ExpressRoute
Connection Encrypted tunnel over the public internet Private, dedicated circuit
Cost Low (Uses existing internet) High (Requires provider contract)
Setup Speed Fast (Hours) Slow (Weeks to Months)
Bandwidth Varies, up to 10 Gbps depending on SKU Predictable, up to 100 Gbps
Best For Pilots, dev/test, small deployments Production workloads, high-throughput

Conclusion:

For Contoso’s pilot deployment, choosing an Azure VPN Gateway to create a Site-to-Site VPN connection is the clear winner. It directly meets the core requirement of minimizing expense while being fast to deploy and perfectly adequate for the needs of a low-scale test.

请提供中文解释

好的,没问题。这是这个问题的中文解释。


这是一个非常经典的问题。在 Contoso 的混合云部署场景中,你需要将其本地数据中心连接到 Azure,并且核心要求是在小规模试点部署期间将费用降至最低

基于这个核心要求,你的最佳选择是:

Azure VPN 网关 (创建站点到站点 VPN)


为什么选择 VPN 网关是正确的?

  1. 成本最低:这是最重要的因素。站点到站点 (Site-to-Site) VPN 利用的是你现有的公共互联网连接,你不需要从电信运营商那里购买昂贵的专用私有线路。其成本主要包括 Azure VPN 网关的小时费率(有像 BasicVpnGw1 这样非常适合试点项目的低成本 SKU)以及数据传出费用。

  2. 部署快速简单:你可以在几个小时内就完成站点到站点 VPN 的配置。这是一种软件定义的配置,不需要安装物理硬件,也无需与第三方供应商协调,非常适合快速启动一个试点项目。

  3. 足以满足试点需求:对于“小规模”的部署,通过互联网的 VPN 所提供的性能和带宽通常是足够的。你将能够顺利地测试连接、部署虚拟机以及同步少量数据。

为什么不选择其他方案?

  • Azure ExpressRoute (快速路由):这是连接本地数据中心的另一个方案,但它不适合当前这个场景。
    • 成本高昂:ExpressRoute 涉及通过连接合作伙伴(如 AT&T、Verizon、Equinix)建立的专用私有连接。这会带来高昂的月度费用,既包括运营商的线路费,也包括 Azure ExpressRoute 的端口费,远比 VPN 昂贵。
    • 设置复杂且耗时:配置一条 ExpressRoute 线路可能需要数周甚至数月的时间,对于一个试点项目来说太慢、太复杂了。
    • 功能过剩 (大材小用):ExpressRoute 是为那些需要高吞吐量、可预测的低延迟和高安全性的任务关键型生产工作负载而设计的,这些都不是一个低成本试点项目的优先考虑事项。

方案速览对比

特性 Azure VPN 网关 (站点到站点) Azure ExpressRoute
连接方式 通过公共互联网的加密隧道 私有、专用线路
成本 (利用现有互联网) (需要供应商合同)
部署速度 (数小时) (数周至数月)
带宽 可变,取决于 SKU 最高可达 10 Gbps 可预测,最高可达 100 Gbps
最佳适用场景 试点、开发/测试、小型部署 生产工作负载、高吞吐量场景

结论:

对于 Contoso 的试点部署,选择 Azure VPN 网关来创建站点到站点 VPN 连接是明确的最佳选择。它直接满足了最小化费用的核心要求,同时部署快速,并且完全能够满足小规模测试的需求。