SNAX/XF LU Network Services Manual

Building the ESS Tables

Using LUNS

2–12 097841 Tandem Computers Incorporated

Figure 2-2. LUNS’ Use of a Replacement DLU in Passthrough

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LUNS receives an INIT-SELF from the terminal; the DLU name within it (DLUname1)

matches a command name field in the ESS table.

LUNS finds another DLU name (DLUname2) in the record's PLUNAME field. LUNS

replaces DLUname1 with this new name before sending the INIT-SELF to the host.

DLUname1, INITSELF-RECEIVED, SENDHOST Y, PLUNAME DLUname2

ESS

Table

Record

DLUname2

INIT-SELF

Host

Optional operands when CMDTYPE is INITSELF-RECEIVED include RECSIZE,

CHARACTERSET, BINDENTRY, and USERDATA. As with CMDTYPE LOGON-

INIT, the BINDENTRY operand here must point to an entry in the host's LOGMODE

table. Note that when the terminal sends LUNS an INIT-SELF command, you can use

the USERDATA operand to override what the INIT-SELF command specifies. The

INIT-SELF command sent to the host contains what is specified by the ESS table.

Note Although SNAXUTL does allow you to specify a terminal protocol in all passthrough logon records, LUNS

does not use the protocol you specify. For passthrough sessions, the PROTOCOL operand is irrelevant.

Logoff Records for Logging

Off All Processes

You can create within the ESS table a single, all-purpose logoff record that allows

LUNS to log off terminals from a multiplicity of processes, regardless of whether these

processes reside on the Tandem system or on the host. You can do this, however, only

when LUNS has established these LU-LU sessions by using either:

A logon record specifying CMDTYPE LOGON-INIT (for both passthrough and

non-passthrough sessions), or

A logon record specifying CMDTYPE LOGON-CHAR (for non-passthrough

sessions only)