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Chapter 9 231
Configuring Passthrough Services
Configuring PU Concentration
• Define the LUs on the local node that are used for communication
with the host (the upstream LUs). Upstream LUs must be defined
using the LU Type 0-3 Configuration dialog, specifying an LU type of
unrestricted (unknown). To add the LUs, see “Defining LU Types
0–3”.
• If you are going use any LU pools, define them as described in
“Defining LU Pools”.
To enable PU concentration, you must configure LUs on the local node to
support sessions with downstream workstations. (If you configured a
template on the port to support implicit downstream LUs, you may not
need to define downstream LUs explicitly.) The LUs defined on the local
node are referred to as “downstream LUs.” To configure downstream
LUs, you need the LU numbers that are used on the downstream nodes,
and the name of the host LU. (The LUs that are defined on the
downstream nodes can be any dependent LU type.)
To configure downstream LUs, use one of the following methods:
Motif administration program
Select PU concentration and New downstream LU
from the Services menu on the Node window.
Command-line administration program
Issue one of the following commands:
define_downstream_lu
define_downstream_lu_range
Downstream LU Configuration Parameters
The following parameters are required for downstream LU
configuration:
Downstream LU name
A name for each downstream LU. The LU name is used
only to identify the LU locally, and does not need to
match any configuration on the downstream node.
If you are defining a range of LUs, specify a base name
of 1-5 characters. SNAplus2 adds a three-digit decimal
string to the base name to create an LU name for each
LU number you specify.
Downstream PU name
The name of the link station to the downstream node.
LU number