gtpc1m0zTransmission Control Protocol/Internet Protocol

Defining CLAW Workstations for a TPF Host Processor

When you IPL a TPF host processor, that supports TCP/IP, you must define the Common Link Access to Workstation (CLAW) workstation for that processor using the ZCLAW ADD command. As you define CLAW workstations, they are added to the CLAW device table (CDT) and filed out to fixed file. On subsequent IPLs the table is read back into storage and you do not have to reissue the ZCLAW command.

A CLAW workstation is a device that communicates with the TPF system using the Common Link Access to Workstation (CLAW) protocol. The IBM 3172 Model 3 Interconnect Controller is an example of a CLAW workstation.

A CLAW workstation definition consists of the following:

The CLAW host application is the application on the TPF host processor that is used to establish a CLAW connection with the CLAW workstation application.

The CLAW workstation application is the application on the CLAW workstation that is used to establish a CLAW connection with the CLAW host application.

To define a CLAW workstation, enter the ZCLAW ADD command. See TPF Operations for more information about the ZCLAW ADD command.

Considerations for IBM 3172 Model 3 Interconnect Controllers

If you are using an IBM 3172 Model 3 Interconnect Controller for your TCP/IP offload device, you must specify the following values for the CLAW workstation definition:

CLAW workstation name
Each workstation attached to the TPF host processor must have a unique name according to the following conventions:

CLAW workstation application name
Must be API.

CLAW host application name
Must be TCPIP.