Configuring Proxy Arp; Proxy Arp Configuration Examples; Proxy Arp Configuration Example - H3C S5600 Series Operation Manual

Operation Manual – ARP
H3C S5600 Series Ethernet Switches
With proxy ARP enabled on the switch, when VLAN-interface 3 receives the ARP
request, if the switch finds a route to the destination IP address (encapsulated in
the ARP request) in the routing table, the switch sends host A the MAC address of
VLAN-interface 3 in an ARP response (with the source IP address being the
destination IP address of the ARP request). After receiving the ARP response,
Host A creates an ARP entry, in which the destination IP address is the IP address
of Host D (192.168.1.30/16), and the MAC address is that of VLAN-interface 3.
The following packets sent from Host A to Host D will all be sent to VLAN-interface
3 of the switch, and then the switch forwards the packets in Layer 3 to Host D, so
as to realize the Layer 3 connectivity between Host A and Host D.

2.2 Configuring Proxy ARP

Follow these steps to configure proxy ARP:
Enter system view
Enter VLAN interface view
Enable proxy ARP
Display the proxy ARP
configuration

2.3 Proxy ARP Configuration Examples

2.3.1 Proxy ARP Configuration Example

I. Network requirements
The IP address of Host A is 192.168.0.22/16, and that of Host D is
192.168.1.30/16.
Create VLAN 3 and VLAN 4 on the switch.
The IP address of VLAN-interface 3 is 192.168.0.27/24, and that of
VLAN-interface 4 is 192.168.1.27/24.
Enable proxy ARP on VLAN-interface 3 and VLAN-interface 4 to realize the
communication between Host A and Host D.
To do...
system-view
interface Vlan-interface
vlan-id
arp proxy enable
display arp proxy
[ interface
Vlan-interface vlan-id ]
Chapter 2 Proxy ARP Configuration
Use the command...
2-2
Remarks
—
—
Required
Disabled by default.
Available in any view