TS Supplement (Includes RFC-1006 Support)

Configuring OSI/TS

RFC-1006 Subsystem Configuration

2–2 107751 Tandem Computers Incorporated

Configuring OSI/TS This section contains the following information:

OSI/TS SCF attributes used for TCP/IP protocol selection

Configuring OSI/TS, TCP/IP, and NSP processes

New OSI/TS startup PARAMs for RFC-1006

OSI/TS SCF Attributes

Used for TCP/IP Protocol

Selection

The OSI/TS Transport Service Provider (TSP) process performs services on behalf of

an associated OSI/TS subdevice (SU) object—when the SU is acting as a client

(initiator) or server (responder). As a client, the SU initiates a CR-TPDU and waits for

a CC-TPDU; as a server, the SU waits for a CR-TPDU and returns a CC-TPDU. Table

2-1 summarizes the OSI/TS 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 2-1. OSI/TS 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 must specify ON if you wish to use this

service.

LOCALNSAP Specifies the local IP address.

Client role: When the TSP process is in the client role (the initiator), it is an

optional attribute. If present, TCP/IP uses the named subnet (IP

address). If not present, TCP/IP chooses a subnet based on its

routing algorithm.

Server role: When the TSP process is in the server role (the responder), it is a

required attribute.

NSPDEVICE Specifies the TCP/IP process. It is a required attribute; you must provide a value.

REMOTENSAP Specifies the remote IP address.

Client role: When the TSP process is in the client role (the initiator) it is a

required attribute.

Server role: When the TSP process is in the server role (the responder) it is an

ignored attribute.

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 SU command. See the SCF Reference Manual for Tandem

OSI/TS for additional syntax information. Section 4, “RFC-1006 Configuration Command Files,” provides

configuration example files.