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.
- IBM® i5/OS IP Networks: Dynamic
This IBM Redbooks® publication demonstrates how to design an IP network that is self-configuring, fault-tolerant, secure, and efficient in its operation on IBM i.
- TCP/IP
routing and workload balancing
This topic collection provides techniques and instructions for routing and workload balancing.
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.
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.