IBM as-400 User Manual

Contents

Part 1. Getting started with AS/400 communications . . . . . . . . . . . . . . 1

Chapter 1. Print this topic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Chapter 2. Configuring AS/400 for communications . . . . . . . . . . . . . . . . . . . 5
Creating a network interface description

. . . . . . . . . . . . . . . . . . . . . . . . 5

Creating a network server description

. . . . . . . . . . . . . . . . . . . . . . . . . 5

Creating a line description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Chapter 3. Optimizing communications performance

. . . . . . . . . . . . . . . . . . 7

Improving wide area network performance . . . . . . . . . . . . . . . . . . . . . . . . 7

Adjusting WAN protocols for optimum AS/400 performance

. . . . . . . . . . . . . . . . 7

Adjusting the WAN line speed for optimum AS/400 performance. . . . . . . . . . . . . . . 7
WAN line speed considerations for IOPs

. . . . . . . . . . . . . . . . . . . . . . . 8

Improving local area network performance . . . . . . . . . . . . . . . . . . . . . . . . 9

Adjusting LANs for optimum communications performance . . . . . . . . . . . . . . . . . 9
Adjusting LAN lines for optimum communications performance . . . . . . . . . . . . . . . 9
LAN line speed considerations for IOPs . . . . . . . . . . . . . . . . . . . . . . . 10

Improving data path performance

. . . . . . . . . . . . . . . . . . . . . . . . . . 10

Considerations for subsystem configuration for error recovery performance . . . . . . . . . . 11
Communications performance considerations for interactive jobs . . . . . . . . . . . . . . 12
Communications performance considerations for batch jobs . . . . . . . . . . . . . . . . 13
Mixing interactive and batch jobs on a WAN line . . . . . . . . . . . . . . . . . . . . 13
Performance considerations for AnyNet communications . . . . . . . . . . . . . . . . . 14
Subsystems

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Chapter 4. Communications applications . . . . . . . . . . . . . . . . . . . . . . . 17
User written APPC applications . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Distributed data management (DDM) . . . . . . . . . . . . . . . . . . . . . . . . . 17
Application program interface (API) performance considerations . . . . . . . . . . . . . . . 17

Performance considerations for intersystem communications function . . . . . . . . . . . . 18
Performance considerations for Common Programming Interface Communications

. . . . . . . 19

Chapter 5. Communicating with host systems . . . . . . . . . . . . . . . . . . . . . 21
Matching AS/400 parameters for a host system

. . . . . . . . . . . . . . . . . . . . . 21

Matching AS/400 line description parameters for a host system

. . . . . . . . . . . . . . 21

Matching AS/400 controller description parameters for a host system

. . . . . . . . . . . . 23

Matching AS/400 device description parameters for a host system

. . . . . . . . . . . . . 24

Matching AS/400 mode and class-of-service description parameters for a host system . . . . . . 25

Configuring dependent LU requester (DLUR) . . . . . . . . . . . . . . . . . . . . . . 31

Configuring the host controller description

. . . . . . . . . . . . . . . . . . . . . . 31

Configuring the device descriptions . . . . . . . . . . . . . . . . . . . . . . . . . 31

Chapter 6. Communicating with a remote AS/400 system

. . . . . . . . . . . . . . . . 33

Matching AS/400 line description parameters for a remote AS/400 system

. . . . . . . . . . . 33

Matching AS/400 controller description parameters for a remote AS/400 system

. . . . . . . . . 35

Matching AS/400 device description parameters for a remote AS/400 system

. . . . . . . . . . 36

Connecting one AS/400 to another AS/400 system . . . . . . . . . . . . . . . . . . . . 37

Chapter 7. Communicating with remote workstation controllers . . . . . . . . . . . . . . 41
Matching AS/400 parameters for 5494 controllers. . . . . . . . . . . . . . . . . . . . . 41

Matching AS/400 parameters for a 5494 connected by token-ring . . . . . . . . . . . . . . 41
Matching AS/400 parameters for a 5494 connected by Ethernet . . . . . . . . . . . . . . 44

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