Document Organization

This manual is divided into several parts. Each part describes a major functional area of the JUNOS software, and the individual chapters within a part describe the software components of that functional area.

This manual contains the following parts and chapters:

• Preface, About This Manual (this chapter), provides a brief description of the contents and organization of this manual and describes how to contact customer support.
• Part 1, "Overview," provides an overview of the hardware and software components of the router, describes the user command-line interface, and provides the procedures for installing and upgrading the software.

• Chapter 1, "Product Architecture," discusses the router hardware and product architecture.
• Chapter 2, "JUNOS Software Overview," provides an overview of the JUNOS software features and lists the software standards that the JUNOS software supports.
• Chapter 3, "Complete Configuration Mode Commands and Statements," lists all the commands available in configuration mode. It also lists the complete configuration statement hierarchy, showing all possible configuration statements and levels in the configuration hierarchy.

• Part 2, "Software Installation and Upgrade," describes how to install, reinstall, and upgrade the JUNOS software on a router.

• Chapter 4, "Installation Overview," provides background information for the installation process.
• Chapter 5, "Configure the Software Initially," describes how to initially configure the JUNOS software.
• Chapter 6, "Reinstall the Software Using the Install Media," describes how to reinstall the JUNOS software using the install media.
• Chapter 7, "Upgrade Software Packages," describes how to upgrade software packages.
• Chapter 8, "Reinstall Software Using jinstall," describes how to reinstall software using jinstall.
• Chapter 9, "Upgrade to Release 6.0 or Downgrade from Release 6.0," describes how to upgrade to Release 6.0 or downgrade from Release 6.0.

• Part 3, "Command-Line Interface," describes the interface that you use to configure and monitor the JUNOS software. The command-line interface (CLI) is the interface you use when you access the router.

• Chapter 10, "Command-Line Interface Overview," provides an overview of the functions of the CLI.
• Chapter 11, "Command-Line Interface Operational Mode," describes the operational mode of the CLI.
• Chapter 12, "Control the CLI Environment," describes how to configure the CLI environment.
• Chapter 13, "Configure the Router with the CLI," describes the configuration mode of the CLI.
• Chapter 14, "Configuration Groups," describes configuration groups.
• Chapter 15, "Summary of CLI Environment Commands," explains each of the CLI environment commands.
• Chapter 16, "Summary of CLI Configuration Mode Commands," explains each of the CLI configuration mode commands.
• Chapter 17, "Summary of CLI Operational Mode Commands," explains each of the CLI operational mode commands.

• Part 4, "System Management," describes how to use the CLI to manage the router.

• Chapter 18, "System Management Overview," provides background information for configuring system management functions.
• Chapter 19, "System Management Configuration Statements," lists all the statements available at the [edit system] hierarchy level.
• Chapter 20, "Configure Basic System Management," describes how to configure basic system management functions.
• Chapter 21, "Configure System Authentication," describes how to configure RADIUS and TACACS+ authentication.
• Chapter 22, "Configure User Access," describes how to configure user access.
• Chapter 23, "Configure Time," describes how to set the time zone and configure the Network Time Protocol, which provides mechanisms to synchronize time and coordinate time distribution in a large, diverse network.
• Chapter 24, "System Log Messages Overview," describes how to control system logging and how much information the system should log.
• Chapter 25, "Configure Miscellaneous System Management Features," describes how to configure various system management functions, such as console and auxiliary port properties and the source address for locally generated TCP/IP packets.
• Chapter 26, "Security Configuration Example", provides an example of a configuration that applies sound security policies so that the router can operate securely.
• Chapter 27, "Summary of System Management Configuration Statements," explains each of the system management configuration statements.

• Part 5, "Access," describes how to configure access services

• Chapter 28, "Access Configuration Guidelines," describes how to configure access. and explains each of the access configuration statements.

• Part 6, "Security Services," describes how to configure security services.

• Chapter 29, "Security Services Overview," provides background information for configuring security services.
• Chapter 30, "Security Services Configuration Guidelines," describes how to configure security service properties.
• Chapter 31, "Summary of Security Services Configuration Statements," explains each of the security services configuration statements.

• Part 7, "Router Chassis," covers the configuration of router chassis properties.

• Chapter 32, "Router Chassis Configuration Guidelines," describes how to configure router chassis properties.
• Chapter 33, "Summary of Router Chassis Configuration Statements," provides a detailed listing of all configuration statements used in router chassis configuration.

This manual also contains a complete index and an index of statements and commands. For a list and description of glossary terms, see the JUNOS Internet Software Comprehensive Index and Glossary.