Introduction to the Junos Operating System (IJOS)

Course Description Schedule

Course Overview

This three-day 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.

The course then delves into foundational routing knowledge and configuration examples including general routing concepts, routing policy, and firewall filters.

Through demonstrations and hands-on labs, students will gain experience in configuring and monitoring the Junos OS and monitoring basic device operations. This course is based on Junos OS Release 15.1X49.

Important: On February 10, 2017, Education Services transitioned to a new 3-day version of the Introduction to the Junos Operating System (IJOS) course, revision V-15.a. The new revision includes updated content from the IJOS-V-12.e course, the Junos Routing Essentials (JRE-V-12.b) course, and additional material.
After April 1, 2017, all classes will be the new 3-day IJOS-V-15.a course, outlined below. The IJOS-V-12.e and JRE-V-12.b one-day courses will not be offered after April 1, 2017.
If you are registering for an IJOS class between February 10 and March 31, contact your training provider to confirm whether it is the one-day IJOS-V-12.e course or the three-day IJOS-V-15.a course.

Who should attend

This course benefits individuals responsible for configuring and monitoring devices running the Junos OS.


This course is part of the following Certifications:


Students should have basic networking knowledge and an understanding of the Open Systems Interconnection (OSI) reference model and the TCP/IP protocol suite.

Course Objectives

After successfully completing this course, you should be able to:

  • 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.
  • Explain basic routing operations and concepts.
  • View and describe routing and forwarding tables.
  • Configure and monitor static routing.
  • Configure and monitor OSPF.
  • Describe the framework for routing policy and firewall filters.
  • Explain the evaluation of routing policy and firewall filters.
  • Identify instances where you might use routing policy.
  • Write and apply a routing policy.
  • Identify instances where you might use firewall filters.
  • Write and apply a firewall filter.
  • Describe the operation and configuration for unicast reverse path forwarding (RPF).

Course Content

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
  • Lab 1: The Junos CLI
Chapter 4: Initial Configuration
  • Factory-Default Configuration
  • Initial Configuration
  • Interface Configuration
  • Lab 2: Initial System Configuration
Chapter 5: Secondary System Configuration
  • User Configuration and Authentication
  • System Logging and Tracing
  • Network Time Protocol
  • Archiving Configurations
  • SNMP
  • Lab 3: Secondary System Configuration
Day 2
Chapter 6: Operational Monitoring and Maintenance
  • Monitoring Platform and Interface Operation
  • Network Utilities
  • Maintaining the Junos OS
  • Password Recovery
  • System Clean-up
  • Lab 4: Operational Monitoring and Maintenance
Chapter 7: Interface Configuration Examples
  • Review of the Interface Configuration Hierarchy
  • Interface Configuration Examples
  • Using Configuration Groups
Chapter 8: The J-Web Interface
  • The J-Web GUI
  • Configuration
  • Lab 5: The J-Web Interface
Chapter 9: Routing Fundamentals
  • Routing Concepts: Overview of Routing
  • Routing Concepts: The Routing Table
  • Routing Concepts: Routing Instances
  • Static Routing
  • Dynamic Routing
  • Lab 6: Routing Fundamentals
Day 3
Chapter 10: Routing Policy
  • Routing Policy Overview
  • Case Study: Routing Policy
  • Lab 7: Routing Policy
Chapter 11: Firewall Filters.
  • Firewall Filters Overview
  • Case Study: Firewall Filters
  • Unicast Reverse-Path-Forwarding Checks
  • Lab 8: Firewall Filters
Chapter 12: Class of Service
  • CoS Overview
  • Traffic Classification
  • Traffic Queueing
  • Traffic Scheduling
  • Case Study: CoS
  • Lab 9: Class of Service
Classroom Training

Duration 3 days

Price (excl. tax)
  • Germany: 1,890.- €
  • Switzerland: Fr. 1,100.-
incl. catering
Catering includes:

  • Coffee, Tea, Juice, Water, Soft drinks
  • Pastry and Sweets
  • Bread
  • Fresh fruits
  • Lunch in a nearby restaurant

* Catering information only valid for courses delivered by Fast Lane.

Digital courseware Dates and Booking
Online Training

Duration 1 day

Digital courseware Dates and Booking
Click on town name to bookSchedule
This computer icon in the schedule indicates that this date/time will be conducted as Instructor-Led Online Training.
This is a FLEX course, which is delivered both virtually and in the classroom.
20/03/2017 Düsseldorf 1 day
19/04/2017 - 21/04/2017 Berlin
19/04/2017 - 21/04/2017 Munich
22/05/2017 - 24/05/2017 Frankfurt
22/05/2017 - 24/05/2017 Stuttgart
14/06/2017 - 16/06/2017 Düsseldorf
14/06/2017 - 16/06/2017 Hamburg
12/07/2017 - 14/07/2017 Berlin
19/06/2017 Zurich 1 day
26/06/2017 Zurich 1 day
04/09/2017 Zurich 1 day
18/09/2017 Zurich 1 day
04/12/2017 Zurich 1 day
11/12/2017 Zurich 1 day
19/06/2017 Vienna (iTLS) 1 day
26/06/2017 Vienna (iTLS) 1 day
04/09/2017 Vienna (iTLS) 1 day
18/09/2017 Vienna (iTLS) 1 day
04/12/2017 Vienna (iTLS) 1 day
11/12/2017 Vienna (iTLS) 1 day

Fast Lane Flex™ Classroom If you can't find a suitable date, don't forget to check our world-wide FLEX™ training schedule.