H3C Technologies H3C S7500E Series Switches - Manual (Page 27)

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[SwitchA-Vlan-interface2] ip address 192.168.10.100 255.255.0.0
The ping operation from Host A to Host B is unsuccessful because they are isolated at Layer 2 and
Layer 3.
# Configure local proxy ARP to let Host A and Host B communicate at Layer 3.
[SwitchA-Vlan-interface2] local-proxy-arp enable
The ping operation from Host A to Host B is successful after the configuration.
Local Proxy ARP Configuration Example in Super VLAN
Network requirements
As shown in Figure 2-5 , a super VLAN, VLAN 10, is created, with the interface IP address being
192.168.10.100/16. Sub-VLANs (VLAN 2 and VLAN 3) are created. gigabitethernet2/0/2 belongs to
VLAN 2 and gigabitethernet2/0/1 belongs to VLAN 3.
Layer 3 communication is implemented between the sub-VLANs.
Figure 2-5 Network diagram for local proxy ARP in super VLAN
Configuration Procedure
# Create the super VLAN and the sub-VLANs. Add gigabitethernet2/0/2 to VLAN 2 and
gigabitethernet2/0/1 to VLAN 3. Configure the IP address 192.168.10.100/16 for the interface of VLAN
10.
<Switch> system-view
[Switch] vlan 2
[Switch-vlan2] port gigabitethernet 2/0/2
[Switch-vlan2] quit
[Switch] vlan 3
[Switch-vlan3] port gigabitethernet 2/0/1
[Switch-vlan3] quit
[Switch] vlan 10
[Switch-vlan10] supervlan
[Switch-vlan10] subvlan 2 3
[Switch-vlan10] interface vlan-interface 10
[Switch-Vlan-interface10] ip address 192.168.10.100 255.255.0.0
[Switch-Vlan-interface10] quit
The ping operation from Host A to Host B is unsuccessful because they are isolated at Layer 2 and
Layer 3.
# Configure the local proxy ARP to implement Layer 3 communication between sub-VLANs.