ULTRIX-32 Guide to Ethernet Communications Servers

This document, "ULTRIX-32 Guide to Ethernet Communications Servers," is a technical manual for administrators, detailing the setup and maintenance of interfaces between the ULTRIX-32 operating system (Version 3.0) and various communications servers, primarily focusing on terminal servers, within an Ethernet Local Area Network (LAN).

It outlines procedures for configuring ULTRIX-32 systems to act as load hosts (for downline loading server software) and service nodes (for user access). The guide provides specific instructions for setting up printers on terminal servers, including hardware matching, port configuration, and spool directories. It also describes how to establish host-initiated (reverse LAT) connections from ULTRIX-32 systems to serial devices on terminal servers. A dedicated section explains configuring the LAT/Telnet Gateway service, enabling direct Telnet connections from LAT terminals to remote hosts without requiring a prior ULTRIX-32 login. Furthermore, the document offers guidance on creating and programming custom LAN services. Finally, it covers essential server maintenance functions, such as obtaining Ethernet addresses, downline loading, upline dumping of memory (for crash analysis), and remote console capabilities.

Appendices include sample C programs for host-initiated connections and replacing standard getty for special services. The manual is intended for network administrators familiar with ULTRIX-32 commands, system configurations, and network naming conventions.