Introduction to VPC and Subnet

VPC

Virtual Private Cloud (VPC) is a user-owned, logically isolated network environment. In the private network, you can create a VPC with a specified network segment, create subnets in the VPC, and manage your cloud resources independently. When creating a VPC, you can plan your network segments independently, and flexibly assign network segments to the VPC. The network segment ranges currently supported by VPC are as follows:

• 10.0.0.0/8 (10.0.0.0-10.255.255.255) Mask range: maximum is /8 mask, minimum is /29 mask.
• 172.16.0.0/12 (172.16.0.0-172.31.255.255) Mask range: maximum is /12 mask, minimum is /29 mask.
• 192.168.0.0/16 (192.168.0.0-192.168.255.255) Mask range: maximum is /16 mask, minimum is /29 mask.

No longer supports default VPCs, [details](/docs/vpc/configurationguide/vpcguide#VPC Communication Rules).

Subnet

In order to scientifically and effectively divide the address space within the VPC, it is divided into finer-grained network segments. These independent network segments are called subnets.

Cloud resources in the subnet support cross-availability zone deployment, providing strong guarantees for cross-availability zone disaster recovery.

The smallest mask of the subnet network segment is /29 mask. When there are cloud resources in the subnet, the subnet cannot be deleted.

VPC Network Interconnection

Networks within the same VPC are interconnected by default, and networks between different VPCs are not connected by default. VPC network interconnection can realize network interconnection between different projects/different regions of VPC.

The network segments of interconnected VPCs are not allowed to overlap. For more details about the capabilities of VPC network interconnection, see [VPC interconnection rules](/docs/vpc/configurationguide/vpcguide#VPC Communication Rules).

Product Quota

The default quota for each account is as follows