The default configuration for Layer 3 PVLAN communications is described in Layer 3 Communications.
To enable Layer 3 communications between all ports in a PVLAN, use the following command:
configure iparp add proxy [ipNetmask | ip_addr {mask}] {vr vr_name} {mac | vrrp} {always}
Specify the IP address or subnet specified for the network VLAN in the PVLAN. Use the always option to ensure that the switch will reply to ARP requests, regardless of the VLAN from which it originated.