NonStop NS1200 Planning Guide

The one system console on the LAN must be configured as the primary system console. This
configuration can be called the setup configuration and is used during initial setup and installation
of the system console and the server. When you use this configuration, you do not need to change
the preconfigured IP addresses.
The setup configuration is an example of a secure, stand-alone network. A LAN cable connects
the primary system console to the maintenance switch, and additional LAN cables connect the
VIO enclosures. The maintenance switch or an optional second maintenance switch allows you
to later add a backup system console and additional system consoles.
NOTE: Because the system console and maintenance switch are single points of failure that
could disrupt access to OSM, this configuration is not recommended for operations that require
high availability or fault tolerance.
Primary and Backup System Consoles Managing One System
This configuration is recommended. It is similar to the setup configuration, but for fault-tolerant
redundancy, it includes a second maintenance switch, backup system console, and if a
modem-based remote solution is used, a second modem (modems not shown above). The
maintenance switches provide a dedicated LAN in which all nodes use the same subnet.
System Consoles 75