Help Center/ Virtual Private Network/ User Guide (Paris Regions) / Management/ Enterprise Edition S2C VPN/ Enterprise Edition VPN Gateway Management/ Creating a VPN Gateway
Updated on 2025-05-07 GMT+08:00
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Creating a VPN Gateway

Scenario

To connect your on-premises data center or private network to your ECSs in a VPC, you need to create a VPN gateway before creating a VPN connection.

Context

The recommended networking varies according to the number of customer gateway IP addresses, as described in Table 1.
Table 1 Networking

Number of Customer Gateway IP Addresses

Recommended Networking

Description

1

It is recommended that the VPN gateway uses the active-active mode. In this case, one VPN connection group is used.

2

It is recommended that the VPN gateway uses the active/standby mode. In this case, two VPN connection groups are used.
  • If your on-premises data center has only one customer gateway configured with only one IP address, it is recommended that the VPN gateway uses the active-active mode. In this mode, you need to create a VPN connection between each of the active EIP and active EIP 2 of the VPN gateway and the IP address of the customer gateway. In this scenario, only one VPN connection group is used.
  • If your on-premises data center has two customer gateways or one customer gateway configured with two IP addresses, it is recommended that the VPN gateway uses the active/standby mode. In this mode, you need to create a VPN connection with each of the customer gateway IP addresses using the active and standby EIPs of the VPN gateway. In this scenario, two VPN connection groups are used.

Prerequisites

  • A VPC has been created. For details about how to create a VPC, see the Virtual Private Cloud User Guide.
  • Security group rules have been configured for the VPC, and ECSs can communicate with other devices on the cloud. For details about how to configure security group rules, see the Virtual Private Cloud User Guide.

Procedure

  1. Log in to the management console.
  2. Click in the upper left corner and select the desired region and project.
  3. Click in the upper left corner, and choose > Virtual Private Network.
  4. In the navigation pane on the left, choose Virtual Private Network > Enterprise – VPN Gateways.
  5. Click Buy S2C VPN Gateway.
  6. Set parameters as prompted and click Create Now.

    Table 2 lists the VPN gateway parameters.

    Table 2 Description of VPN gateway parameters

    Parameter

    Description

    Example Value

    Region

    For low network latency and fast resource access, select the region nearest to your target users.

    Resources cannot be shared across regions.

    Select a region as required.

    Name

    Name of a VPN gateway. The value can contain only letters, digits, underscores (_), hyphens (-), and periods (.).

    vpngw-001

    Network Type
    • Public network: A VPN gateway establishes VPN connections through the Internet.
    • Private network: A VPN gateway establishes VPN connections through a private network.

    Public network

    Associate With
    • VPC

      Through a VPC, the VPN gateway sends messages to the customer gateway or servers in the local subnet.

    VPC

    VPC

    Select a VPC.

    vpc-001(192.168.0.0/16)

    Interconnection Subnet

    This subnet is used for communication between the VPN gateway and VPC. Ensure that the selected interconnection subnet has four or more assignable IP addresses.

    192.168.66.0/24

    Local Subnet

    VPC subnets with which your on-premises data center needs to communicate through the customer gateway.

    • Select subnet

      Select subnets of the local VPC.

    • Enter CIDR block

      Enter subnets of the local VPC or subnets of the VPC that establishes a peering connection with the local VPC.

    192.168.1.0/24,192.168.2.0/24

    BGP ASN

    BGP ASN of the VPN gateway, which must be different from that of the customer gateway.

    64512

    Specification

    Two options are available: Professional 1 and Professional 2.

    Professional 1

    AZ

    An AZ is a geographic location with independent power supply and network facilities in a region. AZs in the same VPC are interconnected through private networks and are physically isolated.

    • If two or more AZs are available, select two AZs.

      The VPN gateway deployed in two AZs has higher availability. You are advised to select the AZs where resources in the VPC are located.

    • If only one AZ is available, select this AZ.

    AZ1, AZ2

    HA Mode
    • Active-active
      • When Associate With is set to VPC, the outgoing traffic from the VPN gateway to the customer subnet is preferentially forwarded through the first VPN connection (VPN connection 1) set up between the customer subnet and an EIP. If VPN connection 1 fails, the outgoing traffic is automatically switched to the other VPN connection (VPN connection 2) set up with the customer subnet. After VPN connection 1 recovers, the outgoing traffic is still transmitted through VPN connection 2 and will not be switched back to VPN connection 1.
    • Active/Standby

      The outgoing traffic from the VPN gateway to the customer subnet is preferentially transmitted through the VPN connection (VPN connection 1) set up between the customer subnet and the active EIP. If VPN connection 1 fails, the outgoing traffic is automatically switched to the other VPN connection (VPN connection 2) set up between the customer subnet and the standby EIP. After VPN connection 1 recovers, the outgoing traffic is automatically switched back to VPN connection 1.

    Active-active

    Bandwidth Name

    EIP bandwidth name.

    Vpngw-bandwidth1

    Active EIP

    This parameter is available only when Network Type is set to Public network.

    EIP used by the VPN gateway to communicate with a customer gateway.

    • Create now: Create an EIP.
    • Use existing: Use an existing EIP.

    Create Now

    Bandwidth (Mbit/s)

    This parameter is available only when Network Type is set to Public network.

    Bandwidth of the EIP, in Mbit/s.

    • All VPN connections created using the EIP share the bandwidth of the EIP. The total bandwidth consumed by all the VPN connections cannot exceed the bandwidth of the EIP.

      If network traffic exceeds the bandwidth of the EIP, network congestion may occur and VPN connections may be interrupted. As such, ensure that you configure enough bandwidth.

    • You can configure alarm rules on Cloud Eye to monitor the bandwidth.
    • You can customize the bandwidth within the allowed range.

    20 Mbit/s

    Bandwidth Name

    This parameter is available only when Network Type is set to Public network.

    EIP bandwidth name.

    Vpngw-bandwidth2

    Active EIP 2

    This parameter is available only when the Network Type is set to Public network and HA Mode is set to Active-active.

    A VPN gateway needs to be bound to a group of EIPs (active EIP and active EIP 2). You can plan the bandwidth for each EIP.

    Create Now

    Standby EIP

    This parameter is available only when the Network Type is set to Public network and HA Mode is set to Active/Standby.

    A VPN gateway needs to be bound to a group of EIPs (active EIP and standby EIP). You can plan the bandwidth for each EIP. The EIPs can share bandwidth with the EIPs used by other network services.

    Create Now

    Bandwidth (Mbit/s)

    This parameter is available only when Network Type is set to Public network and Active EIP 2 or Standby EIP is set to Create Now.

    Bandwidth of the EIP, in Mbit/s.

    • All VPN connections created using the EIP share the bandwidth of the EIP. The total bandwidth consumed by all the VPN connections cannot exceed the bandwidth of the EIP.

      If network traffic exceeds the bandwidth of the EIP, network congestion may occur and VPN connections may be interrupted. As such, ensure that you configure enough bandwidth.

    • You can configure alarm rules on Cloud Eye to monitor the bandwidth.
    • You can customize the bandwidth within the allowed range.

    20 Mbit/s

    Advanced Settings

    Parameters under Advanced Settings are available only when Network Type is set to Private network.

    • Select: This option applies to the scenario where VPCs of the same tenant are connected. Select the access VPC, access subnet, gateway IP address, and tags of the current tenant.

    Select

    Advanced Settings > Access VPC
    • This parameter is available only when Associate With is set to VPC and Network Type is set to Private network.

    If a VPN gateway needs to connect to different VPCs in the southbound and northbound directions, set the VPC in the northbound direction as the access VPC. The VPC in the southbound direction is the VPC associated with the VPN gateway.

    Same as the associated VPC

    Advanced Settings > Access Subnet
    • This parameter is available only when Associate With is set to VPC and Network Type is set to Private network.

    By default, a VPN gateway uses the interconnection subnet to connect to the associated VPC. Set this parameter when another subnet needs to be used.

    Same as the interconnection subnet

    Advanced Settings > Gateway IP Address

    This parameter is available only when Associate With is set to VPC and Network Type is set to Private network.

    • Self-assigned IP address (default)

      An IP address on the access subnet will be automatically assigned to the VPN gateway.

      You can view the automatically assigned IP address on the VPN Gateways page.

    • Manually-specified IP address

      Manually configure IP addresses on the access subnet for the VPN gateway.

    Self-assigned IP address

    Advanced Settings > Tags

    Identifier of a VPN resource. The value consists of a key and a value. A maximum of 20 tags can be added.

    You can select predefined tags or customize tags.

    To view predefined tags, click View predefined tags.

    Configure Tags in Advanced Settings.

    -

  7. Click Create Now.
  8. Confirm the VPN gateway information and click Submit.