When VLAN aggregation is configured, hosts in a super-VLAN use IP addresses on the same network segment and share the same gateway address. Hosts in different sub-VLANs belong to the same subnet, so the switch forwards packets between the hosts by searching for ARP entries but not through the gateway. Proxy ARP allows the switch to establish ARP entries for all sub-VLANs for interworking.
To implement communication between some sub-VLANs, configure static ARP entries to bind destination IP addresses to the gateway MAC address on hosts in the sub-VLANs.
After the preceding configuration is complete, host A can access host B. If host B needs to access host A, configure a static ARP entry to bind host A's IP address to the gateway MAC address on host B.