IJOS : Introduction to JUNOS OS

  • Duration: 1 day
  • Test Level: 0
  • Certifications: JNCIA-JUNOS
  • Price: $795.00
  • Exams: JN0-101

This one-day CLASSROOM course provides students with the foundational knowledge required to work with the Junos operating system and to configure Junos devices. The course provides a brief overview of the Junos device families and discusses the key architectural components of the software. Key topics include user interface options with a heavy focus on the command-line interface (CLI), configuration tasks typically associated with the initial setup of devices, interface configuration basics with configuration examples, secondary system configuration, and the basics of operational monitoring and maintenance of Junos devices.

Through demonstrations and hands-on labs, students will gain experience in configuring and monitoring the Junos OS and monitoring basic device operations. This course uses Juniper Networks SRX Series Services Gateways for the hands-on component, but the lab environment does not preclude the course from being applicable to other Juniper hardware platforms running the Junos OS. This course is based on Junos OS Release 12.1X46-D25.

Network engineers, technical support personnel, reseller support engineers, and others responsible for implementing and/or maintaining the Juniper Networks products covered in this course.


    • Describe the basic design architecture of the Junos OS.
    • Identify and provide a brief overview of Junos devices.
    • Navigate within the Junos CLI.
    • Perform tasks within the CLI operational and configuration modes.
    • Restore a Junos device to its factory-default state.
    • Perform initial configuration tasks.
    • Configure and monitor network interfaces.
    • Describe user configuration and authentication options.
    • Perform secondary configuration tasks for features and services such as system logging (syslog) and tracing, Network Time Protocol (NTP), configuration archival, and SNMP.
    • Monitor basic operation for the Junos OS and devices.
    • Identify and use network utilities.
    • Upgrade the Junos OS.
    • Perform file system maintenance and password recovery on a Junos device.
    • Navigate within the Junos J-Web interface

Day 1

Chapter 1: Course Introduction

Chapter 2: Junos Operating System Fundamentals

  • The Junos OS
  • Traffic Processing
  • Platforms Running the Junos OS

Chapter 3: User Interface Options

  • User Interface Options
  • The Junos CLI: CLI Basics
  • The Junos CLI: Operational Mode
  • The Junos CLI: Configuration Mode

Chapter 4: Initial Configuration

  • Factory-Default Configuration
  • Initial Configuration
  • Interface Configuration

Chapter 5: Secondary System Configuration

  • User Configuration and Authentication
  • System Logging and Tracing
  • Network Time Protocol
  • Archiving Configurations
  • SNMP

Chapter 6: Operational Monitoring and Maintenance

  • Monitoring Platform and Interface Operation
  • Network Utilities
  • Maintaining the Junos OS
  • Password Recovery

Appendix A: Interface Configuration Examples

  • Review of the Interface Configuration Hierarchy
  • Interface Configuration Examples
  • Using Configuration Groups

Appendix B: The J-Web Interface

  • The J-Web GUI
  • Configuration

Students should have basic networking knowledge and an understanding of the OSI model and the TCP/IP protocol suite.