Example: Configuring common proxy ARP

As shown in Figure 6, Host A and Host D have the same IP prefix and mask, but they are located on different subnets separated by the switch. Host A belongs to VLAN 1, and Host D belongs to VLAN 2. No default gateway is configured on Host A and Host D.

Configure common proxy ARP on the switch to enable communication between the two hosts.

	IMPORTANT: By default, interfaces on the device are disabled (in ADM or Administratively Down state). To have an interface operate, you must use the undo shutdown command to enable that interface.

# Create VLAN 2.

<Switch> system-view
[Switch] vlan 2
[Switch-vlan2] quit

# Configure the IP address of VLAN-interface 1.

[Switch] interface vlan-interface 1
[Switch-Vlan-interface1] ip address 192.168.10.99 255.255.255.0

# Enable common proxy ARP on VLAN-interface 1.

[Switch-Vlan-interface1] proxy-arp enable
[Switch-Vlan-interface1] quit

# Configure the IP address of VLAN-interface 2.

[Switch] interface vlan-interface 2
[Switch-Vlan-interface2] ip address 192.168.20.99 255.255.255.0

# Enable common proxy ARP on VLAN-interface 2.

[Switch-Vlan-interface2] proxy-arp enable.

# Verify that Host A and Host D can ping each other.