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40 Chapter 1
SNA Terms and Concepts
Basic SNA Concepts
As shown in Figure 1-3, “Communication between Transaction Programs
and Logical Units,” information is exchanged between TPs and LUs to
enable one node to communicate with another. Although the TPs appear
to be communicating directly, the LUs on each node are the
intermediaries in every exchange.
Figure 1-3 Communication between Transaction Programs and Logical
Units
SNA defines two types of conversations: basic and mapped. These two
types of conversations use different methods to indicate the length of
transmitted or received data packages to be passed between SNAplus2
and the TP.
• In a basic conversation, data must be formatted by the TP as logical
records before being presented to the SEND function.
- HP-UX SNAplus2 1
- Administration Guide 1
- Legal Notices 2
- Contents 10
- Prerequisite Knowledge 15
- About This Book 15
- Organization of This Book 15
- Typographic Conventions 17
- Operating System Conventions 18
- SNAplus2 Publications 18
- Publications for Users 18
- Publications for Programmers 20
- Related Publications 21
- 1 SNA Terms and Concepts 23
- Systems Network Architecture 25
- Basic SNA Concepts 26
- Connectivity 30
- Transaction Programs 31
- Network Accessible Units 32
- Logical Units 33
- Control Points 35
- Sessions 36
- Conversations 39
- Route Selection 41
- Class of Service 42
- Basic APPN Concepts 43
- APPN Network Nodes 45
- APPN End Nodes 45
- LEN Nodes 46
- APPN Control Point 47
- Locating Resources 48
- Session Routing 53
- Intermediate Routing 57
- Direct Connectivity 58
- APPN Connection Networks 60
- APPN Networks 64
- 2 Introduction to SNAplus2 65
- What Is SNAplus2? 67
- Example Configurations 69
- SNAplus2 Components 74
- Node Components 75
- User Applications 79
- 5250 Emulation 80
- RJE Workstation Daemon 80
- APPC API 82
- CPI-C API 83
- Windows APIs 84
- Client/Server Support 85
- HP-UX Clients 88
- Windows Clients 89
- SNAplus2 Resources 90
- Connectivity Resources 91
- Link Stations 92
- Session Resources 94
- Modes and Classes of Service 96
- Directory Information 96
- Domain Resources 97
- SNAplus2 Administration 98
- Administration Tools 99
- Remote Command Facility 102
- Configuration Files 102
- NOF Applications 104
- Diagnostic Tools 105
- 3 Administering SNAplus2 107
- Overview 108
- Planning Worksheets 109
- Task Sheets 110
- Local System 111
- Enabling SNAplus2 Servers 112
- Disabling SNAplus2 Servers 113
- Resource Windows 116
- Domain Window 117
- Node Window 119
- Resource Items 122
- Tool Bar Buttons 123
- Resource Dialogs 124
- Status Dialogs 126
- Help Windows 127
- ASCII Administration Program 129
- Using the Command-Line 130
- Administration Program 130
- 132 Chapter 3 132
- Administering SNAplus2 132
- 4 Basic Configuration Tasks 133
- Configuring the Node 137
- Additional Configuration 138
- Configuring Logging 139
- 142 Chapter 4 142
- Basic Configuration Tasks 142
- 5 Defining Connectivity 143
- Components 143
- 146 Chapter 5 146
- Defining Ports, DLCs, and 147
- Connection Networks 147
- Configuration Parameters 148
- Ethernet 152
- Defining Link Stations 154
- Defining DLUR PUs 164
- 6 Configuring Dependent LUs 167
- Defining LU Types 0–3 169
- Defining LU Pools 172
- 174 Chapter 6 174
- Configuring Dependent LUs 174
- 7 Configuring APPC 175
- Communication 175
- Defining Local LUs 178
- Defining Remote Nodes 181
- Defining Partner LUs 183
- Defining TPs 187
- TP Invocation Parameters 189
- TP Definition Parameters 192
- Mode Configuration Parameters 196
- CPI-C Configuration Parameters 200
- Configuring APPC Security 204
- 208 Chapter 7 208
- Configuring APPC Communication 208
- Configuring 3270 Sessions 216
- Configuring 5250 Users 218
- Configuring RJE Workstations 220
- 222 Chapter 8 222
- Configuring User Applications 222
- 9 Configuring Passthrough 223
- Services 223
- Configuring TN Server 225
- Parameters 229
- Configuring PU Concentration 230
- Configuring DLUR 233
- 10 Managing SNAplus2 from 235
- NetView Screen Display 238
- Using SPCF 241
- Examples of SPCF Commands 242
- Using UCF 243
- Permitted Commands 244
- Example of a UCF Command 245
- Canceling a Command 246
- UCF Security 247
- 248 Chapter 10 248
- 11 Managing SNAplus2 Clients 249
- Setting Up IP Port Numbers 251
- LAN Access Timeout 252
- Defining Client TPs 253
- Managing Win32 Clients 254
- Enabling a Win32 Client 255
- Win32 Client Security 256
- Win32 Client Configuration 257
- Configuration 258
- API_tracing 267
- MSG_tracing 270
- CS_tracing 271
- Appl_Name 273
- CSV_data 274
- Managing Win16 Clients 275
- Enabling a Win16 Client 276
- Win16 Client Security 277
- [Configuration] 280
- [Servers] 283
- [Logging] 284
- [API_tracing] 288
- [MSG_tracing] 290
- [CS_tracing] 292
- [Appl_Name] 293
- [CSV_data] 294
- Managing HP-UX Clients 295
- (sna_clnt.net) 296
- 300 Chapter 11 300
- Managing SNAplus2 Clients 300
- A Configuration Planning 301
- Worksheets 301
- Node Worksheets 303
- LEN Node 304
- Connectivity Worksheets 306
- Token Ring 310
- QLLC (X.25) 318
- PU Concentration 323
- TN Server 324
- B APPN Network Management 337
- Using the Simple Network 337
- Management Protocol 337
- Introduction to SNMP 339
- SNAplus2 APPN SNMP Subagent 341
- C Configuring an Invokable TP 343
- Using snaptpinstall 343
- File Format for snaptpinstall 345
- D Using SNAplus2 in a High 353
- Availability Environment 353
- What is High Availability? 355
- Client/server network link 356
- SNAplus2 Link software 356
- SNA network link 356
- Disk Drives 356
- Client/Server Configuration 359
- SNAplus2 Package 368
- Standby LAN adapter 372
- SNA LAN Connections 373
- TN Server LAN Connections 374
- Modifying the PATH variable 376
- snap stop 377
- I/O Compatibility Constraints 378
- Primary HP-UX Server hp_pri 379
- Token Ring Adapter 379
- Backup HP-UX Server hp_back 379
- Card 0Card 0 379
- Backup DLC 382
- Primary DLC 382
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