Network Planning

HUAWEI CLOUD Virtual Private Cloud (VPC) service provides an isolated virtual network environment for cloud servers, that can be configured and managed by users. It improves cloud resource security and simplifies network deployment. In a VPC, you can define subnets, IP address ranges, routing tables, and security group rules.

Plan the number of VPCs, number of subnets, IP network segments, and interconnection modes based on your service requirements. For details, see the Network Planning section in VPC documentation.

HADR Network Planning

Use only one NIC to build the service/client network communication plane. Figure 1 shows the HADR network plan.

Figure 1 HADR network planning

When deploying the SAP ASE system, you need to plan public and private IP addresses. For details, see Table 1.

The following node names, network segments, and IP addresses are provided for reference only. Set them based on the actual network plan.

**Table 1** Network planning
IP Type	Node Name	NIC	IP Address	Description
Public IP	ase001	eth0	10.0.0.4	Configure the network plane as needed.
Public IP	ase002	eth0	10.0.0.5	Configure the network plane as needed.
Virtual IP	-	-	10.0.0.6	The virtual IP address is optional. The active and standby ECSs where the ASE database resides use the same virtual IP address. You can access the ASE ECSs through the virtual IP address or a private IP address. The virtual IP address must be an unused IP address that is in the same network plane as the public IP address.