H3C Technologies H3C WX6000 Series Access Controllers - Manual (Page 370)

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Proxy ARP Configuration
When configuring proxy ARP, go to these sections for information you are interested in:
z
Proxy ARP Overview
z
Enabling Proxy ARP
z
Displaying and Maintaining Proxy ARP
Proxy ARP Overview
For an ARP request of a host on a network to be forwarded to an interface that is on the same network
but isolated at Layer 2 or a host on another network, the device connecting the two physical or virtual
networks must be able to respond to the request. This is achieved by proxy ARP.
Proxy ARP implements Layer 3 communication between VLAN interfaces isolated at Layer 2 or located
on different networks.
In one of the following cases, you need to enable the local proxy ARP:
z
Devices connected to different isolated Layer 2 ports in the same VLAN on a switch need to
implement Layer 3 communication.
z
With the isolate-user-vlan function enabled on a device attached to a switch, devices in different
secondary VLANs need to implement Layer 3 communication.
Enabling Proxy ARP
Follow these steps to enable proxy ARP or enable local proxy ARP in VLAN interface view:
To do… Use the command… Remarks
Enter system view system-view —
Enter VLAN interface view interface Vlan-interface vlan-id Required
Enable proxy ARP proxy-arp enable
Required
Disabled by default.
Enable local proxy ARP local-proxy-arp enable
Required
Disabled by default.
Displaying and Maintaining Proxy ARP
To do… Use the command… Remarks
Display whether proxy ARP is
enabled display proxy-arp [ interface
Vlan-interface vlan-id ]
Available in any view
Display whether local proxy ARP is
enabled display local-proxy-arp
[ interface Vlan-interface vlan-id ]
Available in any view