Private network services are local area network (LAN) services, and cloud services access each other via internal links. Cloud services can be accessed via the Internet, and can also access each other through the private network on a cloud platform. The Converge Cloud IDCs are interconnected with underlying 10Gbps/1Gbps networks, providing high-bandwidth and low-delay private network communication services. Additionally, private network communication within the same region is completely free, enabling you to flexibly build your network architecture.
Private IP Address
Overview
The private IP address is an IP address that cannot be accessed through the Internet and is the implementation form of Converge Cloud private network service. Each instance has a default network interface (i.e., eth0) with a private IP address that can be automatically allocated by Converge Cloud or defined by the user (only in a VPC environment).
Changing the private IP address by yourself within the operating system will cause the private network communication to be interrupted.
Attributes
- The private network service has user attributes, and different users are isolated from each other, which means that by default, one user cannot access another user's cloud services via the private network.
- The private network service has regional attributes, and different regions are isolated from each other, which means that by default, one cannot access cloud services in different regions under the same account via the private network.
Application Scenarios
The private IP address can be used for Cloud Load Balancer, private network access between CVM instances, and private network access between CVM instances and other cloud services.
Address Allocation
Each CVM instance is assigned a default private IP address when it is started. For different network environments, the private IP address is also different:
- Basic network: The private IP address is automatically assigned by Converge Cloud and cannot be changed.
- VPC: Currently, Converge Cloud VPC CIDR supports the use of any of the three major private IP ranges. The IP address range is as follows, and the mask range must be between 16 to 28:
- 10.0.0.0 - 10.255.255.255
- 172.16.0.0 - 172.31.255.255
- 192.168.0.0 - 192.168.255.255
Private Network DNS
DNS Server Address
The private network DNS service is responsible for domain resolution. If the DNS configuration is incorrect, the domain will be inaccessible. The cloud platform provides reliable private network DNS servers in different regions.