Network Planning

The network information needs to be planned based on the site requirements and SAP S/4HANA planning. The network segments and IP addresses are for reference only. You can configure it based on site requirements.

In HA scenario, the ABAP Central Services (ASCS) node uses two NICs for the server/client network communication plane and internal communication plane, respectively.

The IP addresses of the server/client plane and internal heartbeat communication plane must belong to different subnets.

Figure 1 shows the network planning in HA scenario.

Figure 1 Network planning in HA scenario

Table 1 describes the network planning parameters.

**Table 1** Network planning parameters
Parameter	Description	Example Value
IP address of the server/client plane	Specifies the IP address of the primary NIC plane. The active and standby ASCS nodes communicate with the SAP GUI and SAP HANA databases using this IP address.	Active ASCS node: 10.0.3.10 ERS node: 10.0.3.20 Active HANA node: 10.0.3.30 Standby HANA node: 10.0.3.40
IP address of the internal heartbeat communication plane	The active and standby ASCS nodes use this network plane to communicate with each other. The active and standby SAP HANA databases use this network plane to communicate with each other.	Active ASCS node: 10.0.4.110 ERS node: 10.0.4.120 Active HANA node: 10.0.4.130 Standby HANA node: 10.0.4.140