Direct Connect provides fast and secure connections from on-premises IDCs to Tencent Cloud. You can access Tencent Cloud computing resources in multiple regions and use the connection to implement flexible and reliable hybrid cloud deployments.
Hybrid cloud deployment with Direct Connect (1)
Connect your IDCs with cloud VPCs using traditional dedicated tunnels.
If you want to connect to multiple VPCs over one connection, you need to create dedicated tunnels with different VLAN IDs.
Deploy hybrid cloud with Direct Connect (2)
Interconnect your network instances by using Cloud Connect Network (CCN).
Advantage: you just need to create a connection to the CCN Direct Connect gateway and load the gateway with CCN to enable multiple network instances within the CCN to interconnect with each other.
Direct Connect is composed of connections, dedicated tunnels, and Direct Connect gateways.
| Advantage | Direct Connect | IPsec VPN |
|---|---|---|
| Stable network latency | Network latency is stable and guaranteed. Access networks are based on dedicated links, which you can configure with fixed routes. This removes the pain of unstable latency caused by network congestion or the need to bypass failures. | Access networks are based on the Internet, which may be subject to unstable latency caused by unoptimal routing due to traffic peaks and network congestion. |
| Highly reliable disaster recovery | Access devices and network forwarding devices are deployed in distributed clusters to ensure high reliability of the full link. It also supports dual-line access with protection to provide more than 99.95% of uptime. | Dual-server hot backup ensures that the gateway is highly availability. However, it cannot provide the same network availability as dedicated lines due to the unreliable Internet links. |
| Large bandwidth | Each link supports up to 10Gbps and you can have multiple 10Gbps links for network load balancing. Technically, there is no limit to how much bandwidth you can have. | A single gateway supports up to 100Mbps of bandwidth and a VPC can have multiple VPN gateways to support VPN connections larger than 100Mbps. |
| Highly secure | Dedicated network links offer strong security with no risk of data leakage. This is ideal for the demanding network connection requirements of the finance and government sectors. | Network transmission uses IKE to encrypt trafic with pre-shared key, which can satisfy the security requirements for most network transmission. |
| Network address translation | Network address translation can be configured on gateways. IP mapping on both ends of a Direct Connect and IP port mapping at the VPC side are supported, resolving the address conflicts when multiple networks are interconnected. | Not supported. |
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