You can customize the TN3270E Telnet server by defining
server, connection, and other configuration characteristics.
Before you begin
You need to create the data set in which you will put the
configuration information. You must also specify the profile data
set name on the PROFILE DD statement in the procedure JCL that is
used to start Telnet. The data set must be defined with format fixed
block, and must have a record length of 56-256. The block size must
be evenly divisible by the record length.
If you are using multiple
TN3270E Telnet servers, ensure that each server uses unique LU names,
or define shared LU name groups. If you do not use unique LU names
or create shared LU name groups, then the second server that uses
the same LU name will not be able to establish a session; either the
OPEN ACB request will fail or the cross-domain session request will
fail.
For information about updating Telnet configuration, see Using the VARY TCPIP,tnproc,OBEYFILE command to update Telnet configuration.
Procedure
Perform the following steps to customize the TN3270E
Telnet server configuration data set. A sample configuration is in
SEZAINST(EZBTNPRF).
- Define Telnet server characteristics. The minimum
required definition is the TELNETPARMS block with the PORT statement.
The following functions are optional:
- Define connection characteristics at the server or port
level.
- Understand the concept of mapping Objects to Client Identifiers. To understand the concept of mapping Objects to Client Identifiers,
see Mapping Objects to Client Identifiers.
- After you identify all the clients in your network, determine
which clients have unique characteristics (for example, a particular
client should use a certain LU name) and need to remain exact Client
Identifiers, and which clients can be combined into Client Identifier
groups using wildcard values.
- Use LU name mapping statements to assign LU names to connections
based on the Client Identifier. This step is required. See LU name mapping statements.
- Use application mapping statements to facilitate session
setup based on the Client Identifier. See Application mapping statements.
- Use the connection parameters mapping statement to change
connection parameters based on specific Client Identifiers. To extend
connection mode, security, and persistence choices to Client Identifiers,
see Connection parameters mapping statement.
- Consider advanced topic features for additional Telnet
functions.
Results
You know you are done when you do not receive errors after
you apply the profile.