DECnet—ULTRIX NCP Command Reference

This document is the DECnet-ULTRIX NCP Command Reference, published in May 1990 by Digital Equipment Corporation.

It is a comprehensive manual designed for network managers responsible for configuring, monitoring, and testing a Phase IV DECnet-ULTRIX V4.0 node within a DECnet environment.

The manual describes the Network Control Program (NCP) commands in detail, providing syntax, parameters, and examples for various operations. Key topics covered include:

• Using NCP: Instructions on invoking and exiting NCP, executing commands (including syntax, help facility, prompting, error reporting, and event logging), and performing remote command execution.
• NCP Command Descriptions: A detailed reference section describing the function, syntax, restrictions, and examples for a wide range of commands such as clear, define, list, load, loop, purge, set, show, tell, trigger, and zero for various network components like circuits, executors, lines, nodes, and objects.
• Error and Event Messages: Explanations of NCP error messages and network management event-logging messages, categorized by network layers (e.g., Network Management, Session Control, Routing).
• Network Counters: Details on various network counters maintained for circuits, lines, and nodes, used for performance and activity monitoring.
• Appendices: Summaries of all NCP commands, definitions of DECnet-supplied objects (such as tell, fal, nml), and information on Ethernet addressing (format, multicast address types, and values).