Cabletron Systems SmartSwitch manual Loading System Images and Configuration Files

Chapter 1: SSR Product Overview

Disabling a Function or Feature

The CLI provides for an implicit negate. This allows for the “disabling” of a feature or function which has been “enabled”. Use the negate command on a specific line of the active configuration to “disable” a feature or function which has been enabled. For example, Spanning Tree Protocol is disabled by default. If after enabling Spanning Tree Protocol on the SmartSwitch Router, you want to disable STP, you must specify the negate command on the line of the active configuration containing the stp enable command.

Loading System Images and Configuration Files

The SSR contains an internal flash on the Control Module and an external PC flash. The internal flash contains the SSR boot image and user defined configuration files. An external PC flash contains the system image executed by the Control Module. When an SSR boots, the boot image is executed first, followed by the system image and finishing with a configuration file.

Boot and System Image

Only one boot image exists on the internal flash of the SSR Control Module. Multiple system images can be stored on the external PC flash.

Configuration Files

The SSR uses three special configuration files:

•Active – The commands from the Startup configuration file and any configuration commands that you have made active from the scratchpad (see below).

Caution: The active configuration remains in effect only during the current power cycle. If you power down or reboot the SSR without saving the active configuration changes to the Startup configuration file, the changes are lost.

•Startup – The configuration file that the SSR uses to configure itself when the system is powered on.

•Scratchpad – The configuration commands you have entered during a management session. These commands do not become active until you explicitly activate them. Because some commands depend on other commands for successful execution, the SSR scratchpad simplifies system configuration by allowing you to enter configuration commands in any order, even when dependencies exist. When you activate the commands in the scratchpad, the SSR sorts out the dependencies and executes the command in the proper sequence.

SmartSwitch Router User Reference Manual 39