1. Getting started

This chapter provides an overview of this document, includes summaries of what’s new in this release, and lists precautionary messages and command conventions.

1.1. About this document

This document describes how to install the Nokia Service Router Linux (SR Linux) in various environments. It defines the required prerequisites and procedures for how to install SR Linux software elements. Examples of commonly used commands are provided.

This document is intended for network technicians, administrators, operators, service providers, and others who need to understand how the software is installed and upgraded.

Note:

This manual covers the current release and may also contain some content that will be released in later maintenance loads. Refer to the SR Linux Release Notes for information on features supported in each load.

1.2. What’s new

Table 1 lists the changes that were made in this release.

Table 1: Change summary

Topic	Location
Installation on a 7250 IXR system using a rescue image from an SD card	Installation using a rescue image from an SD card
Installation on a 7250 IXR system using an image copied to an SD card	Installation using an image copied to an SD card
Installation procedure on a 7220 IXR-H system	Installing the software manually on a 7220 IXR-D or 7220 IXR-H system
Software upgrade using the tools system deploy-image command	Software upgrade using a tools command

1.3. Precautionary messages

Observe all dangers, warnings, and cautions in this document to avoid injury or equipment damage during installation and maintenance. Follow the safety procedures and guidelines when working with and near electrical equipment.

Table 2 describes information symbols contained in this document.

Table 2: Information symbols

Symbol	Meaning	Description
	Danger	Warns that incorrect handling and installation could result in bodily injury. An electric shock hazard could exist. Before beginning work on this equipment, be aware of hazards involving electrical circuitry, be familiar with networking environments, and implement accident prevention procedures.
	Warning	Warns that incorrect handling and installation could result in equipment damage or loss of data.
	Caution	Warns that incorrect handling may reduce component or system performance.
	Note	Notes contain suggestions or additional operational information.

1.4. Conventions

Nokia SR Linux documentation uses the following command conventions.

Bold type indicates a command that the user must enter.
Input and output examples are displayed in Courier text.
An open right angle bracket indicates a progression of menu choices or simple command sequence (often selected from a user interface). Example: start > connect to.
Angle brackets (< >) indicate an item that is not used verbatim. For example, for the command show ethernet <name>, name should be replaced with the name of the interface.
A vertical bar (|) indicates a mutually exclusive argument.
Square brackets ([]) indicate optional elements.
Braces ({}) indicate a required choice. When braces are contained within square brackets, they indicate a required choice within an optional element.
Italic type indicates a variable.

Generic IP addresses are used in examples. Replace these with the appropriate IP addresses used in the system.

In command prompt examples, # indicates a regular prompt and $ indicates a sudo/root/privileged prompt.