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Components of the Network Model
4-6
8000-A2-GB21-30
April 1998
5446 RTU Proxy ARP
The Hotwire 5446 RTU utilizes proxy ARP to enable connectivity between end
systems that are attached to separate RTUs, but reside on the same subnetwork.
The Hotwire 5446 RTU will proxy ARP for the end-user system that is physically
connected to another Hotwire 5446 RTU where the destination end-user system
is logically connected to the same subnetwork as the sender end-user system.
5546 RTU
If structured subnetting is used and end systems need to communicate with
systems in the same natural subnet, the router attached to the 5546 RTU must
enable Proxy ARP on the interface to which the end system is connected.