H3C Technologies H3C S10500 Series Switches - Manual (Page 31)

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Figure 11 Network diagram for configuring local proxy ARP in super VLAN
Host B
192.168.10.200/16
Host A
192.168.10.99/16
Switch
GE1/0/2
VLAN 2
Sub VLAN
VLAN 10
Super VLAN
Vlan-int10
192.168.10.100/16
GE1/0/1
VLAN 3
Sub VLAN
Configuration Procedure
# Create the super VLAN and the sub-VLANs. Add GigabitEthernet 1/0/2 to VLAN 2 and
GigabitEthernet 1/0/1 to VLAN 3. Configure the IP address 192.168.10.100/16 for the interface of
VLAN 10.
system-view
[Switch] vlan 2
[Switch-vlan2] port GigabitEthernet 1/0/2
[Switch-vlan2] quit
[Switch] vlan 3
[Switch-vlan3] port GigabitEthernet 1/0/1
[Switch-vlan3] quit
[Switch] vlan 10
[Switch-vlan10] supervlan
[Switch-vlan10] subvlan 2 3
[Switch-vlan10] quit
[Switch] interface vlan-interface 10
[Switch-Vlan-interface10] ip address 192.168.10.100 255.255.0.0
From Host A, ping Host B. The ping operation is unsuccessful because they are isolated at Layer 2.
# Configure local proxy ARP to implement Layer 3 communication between sub-VLANs.
[Switch-Vlan-interface10] local-proxy-arp enable
From Host A, ping Host B. The ping operation is successful after the configuration.
Local proxy ARP configuration example in isolate-user-VLAN
Network requirements
As shown in Figure 12 , Switch B is attached to Switch A. VLAN 5 on Switch B is an isolate-user-VLAN,
which includes uplink port GigabitEthernet 1/0/2 and two secondary VLANs, VLAN 2 and VLAN 3.
GigabitEthernet 1/0/3 belongs to VLAN 2, and GigabitEthernet 1/0/1 belongs to VLAN 3.
Host A belongs to VLAN 2 and connects to GigabitEthernet 1/0/3 of Switch B. Host B belongs to VLAN
3 and connects to GigabitEthernet 1/0/1 of Switch B.
As Host A and Host B belong to different secondary VLANs, they are isolated at Layer 2. Configure local
proxy ARP on Switch A to implement Layer 3 communication between Host A and Host B.