When users need to deploy applications on CVM instances that require public services, data must be transmitted via the Internet, and an IP address on the Internet (also known as a public IP address) is required. Tencent Cloud provides Internet access through its high-speed data center connections. The domestic multi-line BGP network covers over twenty network operators, with BGP public network exports switching across domains in seconds, ensuring that your users can enjoy high-speed, secure network quality regardless of the network they use.
Public IP address
Overview: A public IP address is a non-reserved address on the Internet, allowing CVMs with public IP addresses to access and be accessed by other computers on the Internet.
Acquisition: When creating a CVM, set the bandwidth greater than 0 Mbps in the network settings. Upon completion, the Tencent Cloud system will automatically assign a public IP address from the Tencent Cloud public IP address pool to the instance. This address can be changed. For more information on specific operations, please see Changing Public IP.
Configuration: You can log in to CVM instances with public IP addresses on the Internet and configure them accordingly. For more information on logging in to CVM instances, please see Logging in to Linux Instances and Logging in to Windows Instances.
Conversion: Public IP addresses are mapped to the instance's private IP address through Network Address Translation (NAT).
Maintenance: All public network interfaces of Tencent Cloud are uniformly processed by Tencent Gateway (TGW). The public network cards of Tencent Cloud CVM instances are configured on the unified interface layer TGW, making them transparent to the CVMs. Therefore, when users view network interface information in CVMs using
ifconfig (Linux) or ipconfig (Windows) commands, they can only see private network information. Public network information needs to be viewed by users themselves by logging in to the CVM Console and checking the CVM list/details page.Cost: Providing services through public IP addresses incurs associated fees. For specific details, please refer to Public Network Billing Modes.
Public IP address release
Users cannot actively associate or release public IP addresses associated with instances.
Public IP addresses will be released or reassigned in the following situations:
When terminating an instance: If a user actively terminates a pay-as-you-go instance or a monthly/yearly subscribed instance after its expiration, Tencent Cloud will release its public IP address.
Elastic Public IP Address When associating and disassociating with instances. When an instance is associated with an elastic public IP address, Tencent Cloud will release the original public IP address of the instance. When disassociating an instance from an elastic IP address, the instance will be automatically assigned a new public IP address, and the original released public IP address will return to the public IP address pool, making it unavailable for reuse.
Operations Guide
For detailed instructions on how to obtain and change your public IP address, refer to: