VNswitch 900EX

This document serves as a comprehensive guide for the installation, configuration, and troubleshooting of the Digital Equipment Corporation VNswitch 900EX network module. The VNswitch 900EX is a 12-port (10BaseT) to 2-port Fast Ethernet switch, designed for automatic dual-speed switching between 10 Mb/s and 100 Mb/s Ethernet, and can be integrated into a DEChub ONE docking station or a DEChub 900 MultiSwitch.

Key features highlighted include hot-swapping capabilities for both the module and its modular media interface cards, advanced filtering (source/destination address, protocol type, VLAN), an 8,000-entry address table, and IEEE 802.1d compliance. It supports nonvolatile flash memory for firmware upgrades via TFTP, and offers flexible management through SNMP, Command Line Interface (CLI) via Telnet or local terminal, and Digital's clearVISN MultiChassis Manager. The module also features VLAN Secure Domain (VSD) support for port grouping and multiple spanning trees, along with a Load/Dump/Management (LDM) port for operational image handling.

The manual provides step-by-step instructions for installing and removing modular media interface cards, physically installing the VNswitch 900EX module (including power checks and LED verification), and connecting the setup port cable. Detailed configuration procedures are outlined for assigning IP addresses and setting network parameters (SNMP community, in-band/out-of-band IP, default gateway) using menu-driven interfaces, with separate instructions for DEChub ONE and DEChub 900 environments. Appendices include troubleshooting tips based on LED indicators, detailed pin assignments for various connectors and adapters, and full product specifications covering environmental, physical, and certification details. Safety precautions related to static electricity and laser usage are also emphasized.