Procedure
Prerequisites
- Cloud side
- 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.
- Data center side
- IPsec has been configured on the VPN devices in the two on-premises data centers.
- The remote subnets of the VPN device in on-premises data center 1 must contain the local subnet of the VPC and the subnet to be interconnected in on-premises data center 2. The remote subnets of the VPN device in on-premises data center 2 must contain the local subnet of the VPC and the subnet to be interconnected in on-premises data center 1.
Procedure
VPNs support static routing mode, BGP routing mode, and policy-based mode. The following uses the static routing mode as an example.
- Configure a VPN gateway.
- Choose Virtual Private Network > Enterprise – VPN Gateways, and click Buy VPN Gateway.
- Set parameters as prompted.
Table 1 only describes the key parameters for creating a VPN gateway.
Table 1 Description of VPN gateway parameters Parameter
Description
Value
Name
Name of a VPN gateway.
vpngw-001
Network Type
Select Public network.
Public network
Associate With
Select VPC.
VPC
VPC
VPC that the on-premises data centers need to access.
vpc-001(192.168.0.0/16)
Local Subnet
VPC subnets that the on-premises data centers need to access.
192.168.0.0/24,192.168.1.0/24
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.
192.168.2.0/24
BGP ASN
BGP AS number.
64512
HA Mode
Select Active-active.
Active-active
Active EIP
EIP 1 used by the VPN gateway to access the on-premises data center.
1.1.1.2
Active EIP 2
EIP 2 used by the VPN gateway to access the on-premises data center.
2.2.2.2
- Configure customer gateways.
- Choose Virtual Private Network > Enterprise – Customer Gateways, and click Create Customer Gateway.
- Set parameters as prompted.
Table 2 only describes the key parameters for creating a customer gateway.
Table 2 Description of customer gateway parameters Parameter
Description
Value
Name
Name of a customer gateway.
cgw-fw1
Routing Mode
Select Static.
Static
Gateway IP Address
IP address used by the customer gateway in on-premises data center 1 to communicate with the VPN gateway.
Ensure that UDP port 4500 is permitted on the customer gateway device in the on-premises data center.
1.1.1.1
- Repeat the preceding operations to configure the customer gateway (2.2.2.1) in on-premises data center 2.
- Configure VPN connections between the cloud side and on-premises data center 1.
- Choose Virtual Private Network > Enterprise – VPN Connections, and click Buy VPN Connection.
- Set parameters for VPN connection 1 and click Submit.
Table 3 only describes the key parameters for creating a VPN connection.
Table 3 Description of VPN connection parameters Parameter
Description
Value
Name
Name of a VPN connection.
vpn-001
VPN Gateway
VPN gateway for which the VPN connection is created.
vpngw-001
Gateway IP Address
Active EIP bound to the VPN gateway.
1.1.1.2
VPN Type
Select Static routing.
Static routing
Customer Gateway
Name of a customer gateway.
cgw-fw1
Customer Subnet
Subnet in on-premises data center 1 that needs to access the VPC.
- A customer subnet cannot be included in any local subnet or any subnet of the VPC to which the VPN gateway is attached.
- Reserved VPC CIDR blocks such as 100.64.0.0/10 and 214.0.0.0/8 cannot be used as customer subnets.
172.16.0.0/16
Interface IP Address Assignment
Manually specify
Local Tunnel Interface Address
Tunnel interface IP address configured on the VPN gateway.
169.254.70.1
Customer Tunnel Interface Address
Tunnel interface IP address configured on the customer gateway device.
169.254.70.2
Link Detection
Whether to enable route reachability detection in multi-link scenarios. When NQA is enabled, ICMP packets are sent for detection and your device needs to respond to these ICMP packets.
NQA enabled
PSK, Confirm PSK
The value must be the same as the PSK configured on the customer gateway device.
Test@123
Policy Settings
The policy settings must be the same as those on the customer gateway device.
Default
- Create VPN connection 2.
For VPN connection 2, you are advised to use the same parameter settings as VPN connection 1, except the parameters listed in the following table.
Table 4 Parameter settings for VPN connection 2 Parameter
Description
Value
Name
Name of a VPN connection.
vpn-002
Gateway IP Address
Active EIP 2 bound to the VPN gateway.
2.2.2.2
Local Tunnel Interface Address
Tunnel IP address of the VPN gateway.
169.254.71.1
Customer Tunnel Interface Address
Tunnel IP address of the customer gateway.
169.254.71.2
- Configure VPN connections between the cloud side and on-premises data center 2.
- Choose Virtual Private Network > Enterprise – VPN Connections, and click Buy VPN Connection.
- Set parameters for VPN connection 1 as prompted and click Submit.
Table 5 only describes the key parameters for creating a VPN connection.
Table 5 Description of VPN connection parameters Parameter
Description
Value
Name
Name of a VPN connection.
vpn-003
VPN Gateway
VPN gateway for which the VPN connection is created.
vpngw-001
Gateway IP Address
Active EIP bound to the VPN gateway.
1.1.1.2
Customer Gateway
Name of a customer gateway.
cgw-fw2
VPN Type
Select Static routing.
Static routing
Customer Subnet
Subnet in on-premises data center 2 that needs to access the VPC.
- A customer subnet cannot be included in any local subnet or any subnet of the VPC to which the VPN gateway is attached.
- Reserved VPC CIDR blocks such as 100.64.0.0/10 and 214.0.0.0/8 cannot be used as customer subnets.
10.10.0.0/16
Interface IP Address Assignment
Manually specify
Local Tunnel Interface Address
Tunnel interface IP address configured on the VPN gateway.
169.254.72.1
Customer Tunnel Interface Address
Tunnel interface IP address configured on the customer gateway device.
169.254.72.2
Link Detection
Whether to enable route reachability detection in multi-link scenarios. When NQA is enabled, ICMP packets are sent for detection and your device needs to respond to these ICMP packets.
NQA enabled
PSK, Confirm PSK
The value must be the same as the PSK configured on the customer gateway device in on-premises data center 2.
Test@123
Policy Settings
The policy settings must be the same as those configured on the customer gateway device in on-premises data center 2.
Default
- Create VPN connection 2.
For VPN connection 2, you are advised to use the same parameter settings as VPN connection 1, except the parameters listed in the following table.
Table 6 Parameter settings for VPN connection 2 Parameter
Description
Value
Name
Name of a VPN connection.
vpn-004
Gateway IP Address
Active EIP 2 bound to the VPN gateway.
2.2.2.2
Local Tunnel Interface Address
Tunnel IP address of the VPN gateway.
169.254.73.1
Customer Tunnel Interface Address
Tunnel IP address of the customer gateway in on-premises data center 2.
169.254.73.2
- Configure customer gateway devices in on-premises data centers 1 and 2.
The configuration procedures may vary according to the type of the customer gateway device.
Verification
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