Direct Connect provides a fast and secure connection between Tencent Cloud and your local IDC. You can connect Tencent Cloud computing resources in multiple regions with a single connection to implement flexible and reliable hybrid cloud deployment.
Direct Connect is composed of connections, dedicated tunnels, and direct connect gateways.
|Advantage||Direct Connect||IPsec VPN|
|Low network latency||Network latency is stable and guaranteed. A Direct Connect instance accesses the network through dedicated links, and supports fixed routes, removing the pain of unstable latency caused by network congestion or failure bypass.||Network latency is unstable. An IPsec VPN connection accesses the Internet, which may be exposed to bypass due to network congestion.|
|Highly reliable disaster recovery||Access devices and network forwarding devices are deployed in distributed clusters to ensure high reliability of all links. It also supports dual-line access with protection to provide more than 99.95% of uptime.||Features an active-active hot backup architecture with high availability at the gateway layer. However, it cannot provide the same network availability as dedicated lines due to the unreliable Internet links.|
|Large bandwidth||It provides a bandwidth of up to 10 Gbps for each link. You can have multiple 10 Gbps links for network load balancing, so it can theoretically support unlimited bandwidth.||A single IPsec VPN gateway supports a bandwidth of up to 1 Gbps and a VPC can have multiple VPN gateways, which can meet the need for a VPN connection larger than 1 Gbps.|
|High security||Dedicated network links offer strong security without data leakage risks, satisfying the demanding network connection requirements of the finance and government sectors.||Network transmission is encrypted using IKE pre-shared key, which can satisfy the security requirements for most network transmission.|
|Network address translation||It supports configuring the network address translation service on gateways, as well as IP mapping on the two sides of Direct Connect and IP port mapping on the VPC side, to avoid address conflict in case of interconnection among multiple networks.||Not supported.|