TS Supplement (Includes RFC-1006 Support)

Configuring OSI/AS

RFC-1006 Subsystem Configuration

107751 Tandem Computers Incorporated 2–15

Configuring OSI/AS This section describes the attributes an OSI/AS user needs to configure the OSI/AS

subsystem to use TCP/IP as the NSP process.

OSI/AS SCF Attributes

Used for TCP/IP Protocol

Selection

Table 2-2 summarizes the OSI/AS SCF attributes that have meaning when using RFC-

1006. Section 3, “RFC-1006 Changes to the SCF, SPI, and PTrace Subsystems,”

describes the SCF attributes in more detail.

Table 2-2. OSI/AS SCF Attributes Used for TCP/IP Protocol Selection

Attribute Function/Value

CLASS Specifies the OSI preferred transport protocol class. The value must be 0 (for

class 0), which is the default value.

EXPEDITED Specifies the expedited data transfer service. The default is OFF, which means

that the service is not supported; you have to specify ON if you wish to use this

service.

NAME Specifies the TCP/IP process name. It is used to to register an existing process

with the OSI manager. It is a required attribute; you must provide a value.

NETADDR-

MODE

Identifies the addressing mode of the X.25 network service. The value must be

NORMAL.

NSAP Specifies the IP address for the #NSAP entry. It is a required attribute; you must

provide a value.

TPDUSIZE Specifies in bytes, the maximum length of the TPDU. Defaults to the value of the

TPDUSIZE attribute in the #L4 SERVICE command (the default is 512).

Note The following examples show how to configure each attribute with a separate SCF command. You can

also specify multiple attributes in one ADD PROFILE command. All required servers and profiles can be

selected with the ADD ENTRY #APPL command, or by using a combination of the ADD ENTRY #NSAP,

#SNPA, and #TSEL commands. See the SCF Reference Manual for Tandem OSI/AS for additional

syntax information. Section 4, “RFC-1006 Configuration Command Files,” provides configuration example

files.

Transport Protocol Class

The CLASS attribute specifies the preferred protocol class. For RFC-1006, CLASS must

be 0. If the protocol class is configured with a value other than 0, during connection

establishment, OSI/TS will reject the connection attempt.

To configure the protocol class, use the ADD PROFILE #L4 command with the CLASS

attribute. The command syntax is:

ADD PROFILE [

profile-name

], [ CLASS { 0 | 1 | 2 | 3 | 4 } ]

Example:

ADD PROFILE $OSIM.#L4.PROF2, CLASS 0

Use the ALTER PROFILE #L4 or the ALTER SERVICE #L4 command to change the

value of the CLASS attribute.