Proxy Address Resolution Protocol method

This proxy Address Resolution Protocol (ARP) method uses transparent subnetting to associate a partition's virtual interface with an external interface.

The proxy ARP function is built into the TCP/IP stack. It is suggested that you use this method if you have the necessary IP addresses.

Note: IPv6 is not supported by the ARP method.

You might want to learn more information about transparent subnetting:

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If you choose to use the proxy ARP method, you must have a firm understanding of subnetting and TCP/IP. You need to obtain a contiguous block of IP addresses that are routable by your network. You subnet this block of IP addresses. In this example, a contiguous block of four IP addresses (10.1.1.72 through 10.1.1.75) is used. Because it is a block of four IP addresses, the subnet mask for these addresses is 255.255.255.252. You assign one to each of the virtual TCP/IP interfaces on your partitions as shown in this figure.

Figure illustrates virtual TCP/IP interfaces on partition A and partition B and the external proxy ARP interface

In this example, TCP/IP traffic from partition A runs across the virtual Ethernet to the 10.1.1.74 interface on partition B. Because 10.1.1.74 is associated with the external proxy ARP interface 10.1.1.15, the packets continue out of the virtual Ethernet using the proxy ARP interface.

To configure a virtual Ethernet to use the proxy ARP connection method, complete these configuration tasks.