The Rumba APPC Configuration tool simplifies the task of managing remote and local logical unit (LUs)s. A local LU represents
the local workstation, while the a LU represents the local workstation conversation partner.
LU properties
Because the concept of the LU has evolved, it is easier to understand the LU by looking at its properties:
- Sessions have LUs at each end.
- To establish a session, a client must have the server’s LU name, which is known as the remote LU.
- In a hierarchical network, an LU has a defined global address that it uses to route data.
- You can assign different LU names to a host’s different subsystems.
Note: An LU name does not signify a machine or program name, it designates the role a machine or program has within a network. For
example, an LU name can designate a network server.
Logical unit configuration tips
Here are a few tips to consider when you use the Rumba APPC Configuration tool to add or change logical units:
- For a computer client, the LU name default can be the computer name. The Rumba APPC Configuration tool does this automatically
in the configuration process.
- For a server, consider using an LU name alias based on the function, rather than the computer name. This minimizes disruption
if the function is moved to another computer.
- When you are connected to a subarea SNA network, finding an LU name is problematic because you do not have network node services.
In this case, you must configure a remote LU and associate it with a route.