What are the restrictions on the IP range of VPC and subnet?
Converge Cloud VPC CIDR supports the use of any of the following private IP ranges:
10.0.0.0-10.255.255.255(mask range between 16 - 28)172.16.0.0-172.31.255.255(mask range between 16 - 28)192.168.0.0-192.168.255.255(mask range between 16 - 28)
The CIDR of a subnet must be within or the same as the CIDR of the VPC.
Can the IP ranges of VPC and subnet be modified?
- When creating a VPC and subnet, you need to specify their CIDR, which cannot be changed once created.
- If you cannot establish a peering connection due to overlapping private IP ranges, we recommend migrating instances within the VPC. For VPC migration, please refer to the Switching Private Network Services section in the Cloud Server documentation.
Can the private network of resources (CVMs, databases, etc.) within a VPC be modified?
- The main private network IP of the primary network card of a cloud server can be modified, but the main private network of auxiliary network cards cannot be modified.
- Private network load Balancer (CLB) / Cloud Databases do not support modifying private network IPs.
Can cloud servers or databases within a VPC be switched to other VPCs?
- Currently, server migration is supported, but database and other resource migration are not yet supported.
- Cloud servers can be migrated from the current VPC to another VPC under the same account. For directions and precautions, please refer to the "Switching Private Network Services" section in the Cloud Server documentation.
What is the purpose of EIP?
EIP is suitable for the following scenarios:
- Disaster recovery
We strongly recommend using EIPs for disaster recovery purposes. When one of your servers fails to provide services, you can unbind the EIP from that machine and rebind it to a healthy machine, helping you to quickly restore services. - Reserved specific public IP
When you need to reserve a specific public IP in your account, you can convert it to an EIP. After binding it to a device, you can use this IP for public network access. As long as you do not perform the release operation, the EIP will remain in your account. - Other special scenarios
When you have other special situations that require IP replacement, you can convert a regular public IP to an EIP and achieve the replacement by binding/unbinding the EIP. However, EIP resources are valuable, and there are quota limits per region for each account. We recommend that you plan and use them reasonably.
How to keep the public IP unchanged?
When you need to reserve a specific public IP in your account, you can convert it to an EIP. After binding it to a device, you can use this IP for public network access. As long as you do not perform the release operation, the EIP will remain in your account.
Can EIP be converted back to a regular public IP?
EIP cannot be converted back to a regular public IP.