SPI Common Extensions Manual

Contents
SPI Common Extensions Manual—427508-001
ii
1. Introduction to SPI Extensions (continued)
1. Introduction to SPI Extensions (continued)
Subsystem Control Facility (SCF) 1-9
Distributed Management 1-10
2. Extended SPI Concepts
Objects 2-1
Configured and Nonconfigured Objects 2-2
Links Between Objects 2-2
Object Types 2-2
Special Object Types NULL and SUBSYS 2-3
Object-Type Hierarchies 2-3
Object Names 2-4
Assigning Object Names 2-4
Retrieving Object Names 2-5
Hierarchical Naming 2-5
Object Name Templates 2-6
Commands 2-7
Order of Execution 2-7
Command Modifiers 2-8
SUB (Subordinate) Command Modifier 2-8
Summary-State Selector Modifier 2-9
Command-Timeout Modifier 2-9
Command-Power Modifier 2-9
Summary States 2-10
Subsystem Identification 2-11
Subsystem Identifier (SSID) 2-11
Subsystem Manager Process Identification 2-11
Requester Identification 2-13
3. Subsystem Control Point
SCP Command-Message Processing 3-2
Message Size 3-2
Message Routing 3-2
Message Queueing 3-3
Command Cancellation 3-3
Message Validation 3-4
Command Timeout 3-5
Opening an SCP Process 3-6
The $ZNET SCP Process 3-6