Alibaba Cloud provides a default VPC and VSwitch for you in the situation that you do not have any existing VPC and VSwitch to use when creating a cloud product instance. A default VPC and VSwitch will be created along with the creation of the instance.
Default VPC and VSwitch feature list
|Default VPC||Default VSwitch|
|The default VPC in each region is unique.||The default VSwitch in each Availability Zone is unique.|
|The netmask for a default VPC is /16 such as 172.31.0.0/16, which provides up to 65536 private IP addresses.||The netmask for a default VSwitch is /20 such as 172.31.0.0/20, which provides up to 4096 private IP addresses.|
|The default VPC does not occupy the VPC quota that the Alibaba Cloud allocates to you.||The default VSwitch does not occupy the VSwitch quota that the Alibaba Cloud allocates to you.|
|The default VPC is created by the system, all the VPCs created by you are non-default VPCs.||The default VSwitch is created by the system, all the VSwitches created by you are non-default VSwitches.|
|The operations and restrictions for default and non-default VPCs are the same.||The operations and restrictions for default and non-default VSwitches are the same.|