Cabletron Systems SmartSwitch 8-slot, User'S Reference Manual

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Chapter 1: SmartSwitch Router Product Overview
SSR User Reference Manual 1 - 9
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