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  5. Creating a VPC

Creating a VPC

Scenarios

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

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

Procedure

  1. Log in to the management console.
  2. Click in the upper left corner and select the desired region and project.
  3. On the console homepage, under Network, click Virtual Private Cloud.
  4. On the Dashboard page, click Create VPC.
  5. On the Create VPC page, set parameters as prompted.

    During VPC creation, a default subnet will be created and you can also click Add Subnet to create more subnets for the VPC.

    Table 1 VPC parameter description

    Category

    Parameter

    Description

    Example Value

    Basic Information

    Region

    Specifies the desired region. Regions are geographic areas isolated from each other. Resources are region-specific and cannot be used across regions through internal network connections. For low network latency and quick resource access, select the nearest region.

    eu-de

    Basic Information

    Name

    Specifies the VPC name.

    VPC-001

    Basic Information

    CIDR Block

    Specifies the CIDR block for 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 (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

    Specifies 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

    Subnet Settings

    Name

    Specifies the subnet name.

    Subnet

    Subnet Settings

    CIDR Block

    Specifies the CIDR block for the subnet. This value must be within the VPC CIDR range.

    192.168.0.0/24

    Subnet Settings

    Gateway

    Specifies the gateway address of the subnet.

    192.168.0.1

    Subnet Settings

    DNS Server Address

    The external DNS server address is used by default. If you need to change the DNS server address, ensure that the configured DNS server address is available.

    192.168.1.0

    Subnet Settings

    NTP Server Address

    Specifies the NTP server IP address. A maximum of four IP addresses can be configured. Multiple IP addresses must be separated using commas (,).

    192.168.2.1

    Subnet Settings

    Tag

    Specifies 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
    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

  6. The external DNS server address is used by default. If you need to change the DNS server address, select Custom for Advanced Settings and configure the DNS server addresses. You must ensure that the configured DNS server addresses are available.
  7. Click Create Now.