HP-UX SNAplus2 R7 Administration Guide

Configuring Passthrough Services
Configuring TN Server
9 Configuring Passthrough Services
Passthrough services on a server running SNAplus2 enable communication between an SNA host and local systems
that are not directly connected to the host.
SNAplus2 includes TN server support for TN3270, TN3287, and TN3270E clients, collectively referred to as
“TN3270 clients.” To configure this function, see Section 9.1,
Configuring TN Server.
PU concentration provides connectivity between the host and local systems. You can configure LUs on the local
node to support this function (see Section 9.2, Configuring PU Concentration) or you can define a template that is
used to support downstream LUs that have not been explicitly configured (see Section 5.1, Defining DLCs, Ports,
and Connection Networks).
DLUR supports dependent LU sessions between the host and nodes in an APPN network. To configure this function,
see Section 9.3, Configuring DLUR.
9.1 Configuring TN Server
TN server enables TN3270 clients to communicate with a host through an intermediate SNAplus2 node that
implements the TN server. The TN3270 clients connect to the TN server using TCP/IP, and use LUs defined
on the TN server. The TN server LUs establish sessions with LUs at the host to support TN3270 sessions for the
clients.
Before you can configure TN server, you must perform the following configuration tasks:
• Define the local node as described in Section 4.2, Configuring the Node.
• Configure a port and link station for dependent traffic between the local node and the host, as described in
Chapter 5, Defining Connectivity Components.
• Define the TN3270 LUs on the local node that are used for communication with the host. To add the LUs, see
Section 6.1, Defining LU Types 0–3.
• If you are going to use any LU pools, define them as described in Section 6.2, Defining LU Pools.
To configure TN server, perform the following tasks:
• Configure a TN server access record for each TN3270 client who will use the server, or a default record that
enables any client to access the server (see Section 9.1.1, Configuring TN Server Access Records).
• If you are supporting TN3270E or TN3287 clients, you can define an association record for display and printer
LUs (see Section 9.1.2, Configuring TN Server Association Records). This record enables a TN3270E or TN3287
client to select a specific printer (by selecting the associated display LU). The client must be authorized to select
an LU in the TN server access record.
Advanced options for TN server enable you to force printer responses and specify a keep-alive method for all
TN3270 sessions. To access these options, use the
Services menu on the TN Server window.
9.1.1 Configuring TN Server Access Records
TN server access records indicate which TN3270 clients can access the TN server and which LUs they should use.
Each access record identifies a TN3270 client that is permitted to access the TN server, the TCP/IP port that the
client connects to, and the LU or LU pool that the client uses.
You can also define a default record that enables access by any TN3270 client (with the same LUs or LU pools for
all clients).
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