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164 Chapter 5
Defining Connectivity Components
Defining DLUR PUs
Defining DLUR PUs
Normally, a dependent LU session requires a direct communications link
to the host computer. If many nodes (including a host node) are
connected together in an APPN network, some of them may not have a
direct connection to the host, but only an indirect connection through
another node. It is not possible to establish dependent LU sessions to the
host from LUs in these indirectly connected nodes.
Dependent LU requester (DLUR) is an APPN feature designed to
overcome this limitation.
This section explains how to configure a DLUR PU that provides
connectivity to a host computer. Configuring a DLUR PU enables the
local node to provide DLUR services.
DLUR on an APPN node (such as a node running SNAplus2) works in
conjunction with dependent LU server (DLUS) at the host, to route
sessions from dependent LUs on the DLUR node across the APPN
network to the DLUS host. The route to the host can span multiple nodes
and can take advantage of APPN's network management, dynamic
resource location, and route calculation facilities. DLUR must be
available on the node where the LUs are located, and DLUS must be
available on the host node, but DLUR is not required on any
intermediate nodes in the session route.
To configure a DLUR PU, use one of the following methods:
Motif administration program
Select Connectivity and New DLUR PU from the
Services menu on the Node window.
Command-line administration program
Issue the following command:
define_internal_pu
DLUR PU Configuration Parameters
The following parameters are required for DLUR PU configuration:
PU Name