Introduction; Definitions - IBM 3725 Manual

Communication controller stand-alone link tests

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Chapter 1. Introduction

Definitions

In the text that follows, these definitions apply:

Channel-Attached Controller: A controller directly attached to a host via a

channel.

Link-Attached Controller: A controller attached to a host via a communication

link .

Note: A controller may be channel-attached for a Host 'A', and link-attached for

a Host 'B'.

Requesting Controller, or Requester: The controller that is selected by the

operator as the controller that initiates the link test operations. It sends the data

over the link, and expects to receive responses from the responding controller.

Responding Controller, or Responder: The controller that is selected by the

operator as the responder. It receives the test frames from the requesting

controller and reflects them back.

Note: The definitions of requester and responder are completely independent of

whether the controllers are channel- or link-attached.

Chapter 1. Introduction

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