Express Connectを使用すると、データセンターとVirtual Private Cloud (VPC) の間に、高速で安定した安全なプライベート接続を確立できます。 Express Connectは、安全なデータ伝送を保証し、安定したネットワーク品質を保証し、伝送中のデータ侵害を防ぎます。
ネットワークトポロジ
次の図は、Express Connect回路を使用してデータセンターをAlibaba Cloudのアクセスポイントに接続する方法の例を示しています。 Express Connect回路の一端はデータセンターのゲートウェイに接続され、他端はAlibaba Cloudの仮想ボーダールーター (VBR) に接続されます。 これにより、安全で信頼性が高く、高速で低レイテンシの接続が提供されます。 Express Connect回路は、データが長距離で送信される場合でも、低いネットワーク遅延、低いパケット損失率、および高いスループットを保証します。
VBRとVPCをExpress Connect Router (ECR) に接続すると、データセンターはVirtual Private Cloud (VPC) にアクセスできます。
コンポーネント
Express Connectサービスには、Express Connect回路とVBRを介した接続が含まれます。
Connection over an Express Connect circuit
A connection that is established between a data center and an access point of Alibaba Cloud by using an Express Connect circuit. You can create a dedicated connection over an Express Connect circuit by applying for a dedicated Express Connect circuit in the Express Connect console. You can also use a hosted connection over a shared Express Connect circuit provided by an Express Connect partner.
Express Connect回線を介した専用接続の作成と管理
Express Connect回路を介した接続とは何ですか?
VBR
A router between the customer-premises equipment (CPE) in a data center and an access point of Alibaba Cloud. After you connect your data center to an access point of Alibaba Cloud, you can create a VBR to exchange data between your data center and Alibaba Cloud.
ECR
An ECR is a service component that forwards network traffic in the global hybrid cloud in which networks are connected over Express Connect circuits. An ECR provides features such as dynamic routing-based networking and centralized management for route advertisements.
Benefits
High-speed connections：Powered by the network virtualization technology of Alibaba Cloud, Express Connect enables networks to communicate with each other over direct, private, and high-speed connections. Network traffic does not traverse the Internet.
Stability and reliability：Built on the high-quality infrastructure of Alibaba Cloud, Express Connect ensures stable and reliable communication between networks.
Security：Express Connect allows you to virtualize your networks, and networks owned by different accounts are independent of each other. This prevents data breaches during transmission.
On-demand purchase：Express Connect provides different bandwidth limits. You can specify a proper bandwidth limit to meet your business requirements.
Differences between Express Connect circuits and VPN gateways
You can use Express Connect circuits or VPN gateways to connect your data center to Alibaba Cloud. Compared with VPN connections, connections over Express Connect circuits provide better network connectivity, higher security, and larger bandwidth. The following table describes the differences between connections over Express Connect circuits and VPN connections.
Item | Connection over an Express Connect circuit | VPN Connection |
Network connectivity | When you use an Express Connect circuit to connect to Alibaba Cloud, data is transmitted over a private connection with low network latency and packet loss rate. | VPN connections are established over the Internet and are subject to network latency and packet loss. |
Security | Express Connect circuits are dedicated to users. This prevents data breaches and ensures high security. Connections over Express Connect circuits are suitable for users in the finance, government, and enterprise sectors that have high security requirements. | VPN connections are encrypted Internet connections and are suitable for users who have basic security requirements. |
Bandwidth | The bandwidth of a connection over an Express Connect circuit can reach 100 Gbit/s for handling a large number of requests. You can also configure equal-cost multi-path (ECMP) routing by using multiple Express Connect circuits. This ensures service availability and aggregates the bandwidth to Tbit/s. | The bandwidth of a VPN connection is limited by the bandwidth limit of a public IP address. |