This configuration is similar to the default configuration because it uses a single interface, but it does not use ether1 as the default HA interface. IP routing is not needed, because the two nodes are in the same subnet.
Central Management System (CMS) > Central Management System High Availability Guide > Configuration > Basic configuration > Dual-interface LAN configuration
Central Management System (CMS) > Central Management System High Availability Guide > Configuration > Basic configuration > Dual-interface LAN configuration