(Optional) Creating 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 select the desired region and project.On the console homepage, under Network, click Virtual Private Cloud.
On the Virtual Private Cloud page, click Create VPC.
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 Parameter descriptions¶ Category
Parameter
Description
Example Value
Basic Information
Region
Regions are geographic areas that are physically isolated from each other. The networks inside different regions are not connected to each other, so resources cannot be shared across different regions. For low network latency and quick resource access, select the region nearest to your target users.
N/A
Basic Information
Name
The VPC name
The name can contain a maximum of 64 characters, including only letters, digits, underscores (_), hyphens (-), and periods (.). Spaces are not allowed.
VPC-001
Basic Information
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 - 10.255.255.255
172.16.0.0 - 172.31.255.255
192.168.0.0 - 192.168.255.255
192.168.0.0/16
Basic Information
Tag
The VPC tag, which consists of a key and value pair. You can add a maximum of ten tags to each VPC.
The tag key and value must meet the requirements listed in Table 2.
Key: vpc_key1
Value: vpc-01
Basic Information
Description
Supplementary information about the VPC. This parameter is optional.
The description can contain a maximum of 255 characters and cannot contain angle brackets (< or >).
N/A
Subnet Settings
AZ
The AZ of a VPC subnet.
eu-ch2-01
Subnet Settings
Name
The subnet name.
The name can contain a maximum of 64 characters, including only letters, digits, underscores (_), hyphens (-), and periods (.). Spaces are not allowed.
Subnet-001
Subnet Settings
IPv4 CIDR Block
The CIDR block for the subnet. This value must be within the VPC CIDR block.
192.168.0.0/24
Subnet Settings
IPv6 CIDR Block
Specifies whether to enable IPv6.
If you select this option, 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.
N/A
Subnet Settings
Advanced Settings
Click the drop-down arrow to set advanced settings for the subnet, including Gateway and DNS Server Address.
-Subnet Settings
Gateway
The gateway address of the subnet.
192.168.0.1
Subnet Settings
DNS Server Address
By default, two DNS server addresses are configured. You can change them if necessary. A maximum of five DNS server addresses can be configured. Multiple IP addresses must be separated using commas (,).
100.125.x.x
Subnet Settings
NTP Server Address
The IP address of the NTP server. This parameter is optional.
You can configure the NTP server IP addresses as required. The IP addresses are added in addition to the default NTP server addresses. If this parameter is left empty, no IP address of the NTP server is added.
A maximum of four IP addresses can be configured. Multiple IP addresses must be separated using commas (,).
192.168.2.1
Subnet Settings
Tag
The subnet tag, which consists of a key and value pair. You can add a maximum of ten tags to each subnet.
The tag key and value must meet the requirements listed in Table 3.
Key: subnet_key1
Value: subnet-01
Subnet Settings
Description
Supplementary information about the subnet. This parameter is optional.
The description can contain a maximum of 255 characters and cannot contain angle brackets (< or >).
-Table 2 VPC tag key and value requirements¶ Parameter
Requirements
Example Value
Key
Cannot be left blank.
Must be unique for the same VPC and can be the same for different VPCs.
Can contain a maximum of 36 characters.
Can contain only the following character types:
Uppercase letters
Lowercase letters
Digits
Special characters, including hyphens (-) and underscores (_)
vpc_key1
Value
Can contain a maximum of 43 characters.
Can contain only the following character types:
Uppercase letters
Lowercase letters
Digits
Special characters, including hyphens (-) and underscores (_)
vpc-01
Table 3 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 only the following character types:
Uppercase letters
Lowercase letters
Digits
Special characters, including hyphens (-) and underscores (_)
subnet_key1
Value
Can contain a maximum of 43 characters.
Can contain only the following character types:
Uppercase letters
Lowercase letters
Digits
Special characters, including hyphens (-) and underscores (_)
subnet-01
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