Step 1: Create a VPC

Scenarios

A VPC provides an isolated virtual network for ECSs. You can configure and manage the network as required.

You can create a VPC by following the procedure provided in this section. Then, create subnets, security groups, and assign EIPs by following the procedure provided in subsequent sections based on your actual network requirements.

Procedure

Log in to the management console.
Click in the upper left corner and choose Network > Virtual Private Cloud.
The Virtual Private Cloud page is displayed.
Click Create VPC.
The Create VPC page is displayed.

On the Create VPC page, set parameters as prompted.

A default subnet will be created together with a VPC and you can also click Add Subnet to create more subnets for the VPC.

**Table 1** VPC parameter descriptions
Parameter	Description	Example Value
Region	Select the region nearest to you to ensure the lowest latency possible.	-
Name	The VPC name. The name can contain a maximum of 64 characters, which may consist of letters, digits, underscores (_), hyphens (-), and periods (.). The name cannot contain spaces.	VPC-test
IPv4 CIDR Block	The CIDR block of the VPC. The CIDR block of a subnet can be the same as the CIDR block for the VPC (for a single subnet in the VPC) or a subset of the CIDR block for the VPC (for multiple subnets in the VPC). The following CIDR blocks are supported: 10.0.0.0/8-24 172.16.0.0/12-24 192.168.0.0/16-24	192.168.0.0/16
Advanced Settings	Click the drop-down arrow to set advanced VPC parameters, including tags.	Retain the default settings.
Tag	The VPC tag, which consists of a key and value pair. You can add a maximum of 10 tags to each VPC.	Key: vpc_key1 Value: vpc-01

**Table 2** Subnet parameter descriptions
Parameter	Description	Example Value
Name	The subnet name. The name can contain a maximum of 64 characters, which may consist of letters, digits, underscores (_), hyphens (-), and periods (.). The name cannot contain spaces.	subnet-01
IPv4 CIDR Block	The CIDR block for the subnet. This value must be within the VPC CIDR block.	192.168.0.0/24
IPv6 CIDR Block	Specifies whether to set IPv6 CIDR Block to Enable. After the IPv6 function is enabled, the system automatically assigns an IPv6 CIDR block to the created subnet. Currently, the IPv6 CIDR block cannot be customized. IPv6 cannot be disabled after the subnet is created.	-
Associated Route Table	The default route table to which the subnet will be associated. You can change the route table to a custom route table on the Subnets page.	Default
Advanced Settings	Click the drop-down arrow to set advanced settings for the subnet, including Gateway and DNS Server Address.	Retain the default settings.
Gateway	The gateway address of the subnet. This IP address is used to communicate with other subnets.	192.168.0.1
DNS Server Address	A maximum of two DNS server IP addresses can be configured. Multiple IP addresses must be separated using commas (,).	100.125.x.x
Tag	The subnet tag, which consists of a key and value pair. You can add a maximum of 10 tags to each subnet.	Key: subnet_key1 Value: subnet-01

**Table 3** VPC tag key and value requirements
Parameter	Requirements	Example Value
Key	Cannot be left blank. Must be unique for each VPC and can be the same for different VPCs. Can contain a maximum of 36 characters. Can contain letters, digits, underscores (_), and hyphens (-).	vpc_key1
Value	Can contain a maximum of 43 characters. Can contain letters, digits, underscores (_), periods (.), and hyphens (-).	vpc-01

**Table 4** Subnet tag key and value requirements
Parameter	Requirements	Example Value
Key	Cannot be left blank. Must be unique for each subnet. Can contain a maximum of 36 characters. Can contain letters, digits, underscores (_), and hyphens (-).	subnet_key1
Value	Can contain a maximum of 43 characters.	subnet-01