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Juniper: Introduction to the Junos Operating System (IJOS)
Your teams' connectivity depends on a systematically configured network. Use Junos to connect your understanding of devices, protocols and traffic with how the infrastructure operates. Strengthen your ability to intervene and guide troubleshooting when issues arise.
- Duration
- 3 days 21 hours
- Code
- IJOS Code
Presentation
Junos OS is the operating system developed by Juniper Networks for its routing, security and switching devices. This course covers Junos OS fundamentals, including initial configuration, user interfaces, the command line, routing and firewalls.
Objectives
Gain the foundational knowledge needed to use and configure the Junos operating system. After reviewing Junos devices and the main architectural components, you will explore key topics such as the user interface, particularly the command-line interface (CLI). You will learn device installation configuration tasks, network monitoring and maintenance, routing and firewalls. The course combines theory and practical workshops so you can apply your new skills in realistic situations.
By the end of the course, you will be able to:
- describe Junos OS basic architecture;
- use the Junos command-line interface;
- perform tasks through the CLI and configuration modes;
- restore a Junos device to its default state;
- perform initial configuration tasks;
- configure and monitor network interfaces;
- describe authentication and user configuration options;
- perform secondary configuration tasks for services including syslog, tracing, Network Time Protocol (NTP), configuration archiving and Simple Network Management Protocol (SNMP);
- monitor basic Junos OS and device operations;
- identify and use network tools;
- upgrade Junos OS;
- maintain file systems and recover passwords on a Junos device;
- navigate the Junos J-Web interface;
- explain basic routing concepts and operations;
- describe routing and forwarding tables;
- configure and monitor static routing;
- configure and monitor Open Shortest Path First (OSPF);
- understand routing policies and firewall filters;
- explain routing policy and firewall filter evaluation;
- write and apply a routing policy;
- identify situations requiring a routing policy;
- describe Reverse Path Forwarding (RPF) operation and configuration.
Program
Introduction
- This first module introduces the course and the subject.
Junos operating system fundamentals
An overview of Junos OS components and capabilities.
- Junos OS.
- Traffic processing.
- Overview of Junos devices.
User interface options
Explore the Junos command-line interface and user options.
- User interface options.
- Junos command-line basics.
- Junos CLI operational mode.
- Junos CLI configuration mode.
The J-Web interface
This module describes Junos CLI operations for the J-Web interface.
- User interface options.
- Junos command-line basics.
- Junos CLI operational mode.
- Junos CLI configuration mode.
Workshop: Managing user interface options.
Initial configuration
Learn to perform initial configuration tasks.
- Default configuration.
- Initial configuration.
- Configuring interfaces.
Workshop: Initial system configuration.
Secondary system configuration
This module covers secondary system configuration functions.
- User authentication and configuration.
- System tracing and logging.
- Network Time Protocol.
- Configuration archiving.
- SNMP.
Workshop: Secondary system configuration.
Maintenance and monitoring
Learn to perform system maintenance and monitoring tasks.
- Monitoring platform and interface operation.
- Network utilities.
- Maintaining Junos OS.
- Password recovery.
- System cleanup.
Workshop: Maintaining and monitoring Junos OS.
Interface configuration examples
Explore interface configuration scenarios.
- Interface configuration hierarchy.
- Configuration examples.
- Using configuration groups.
Routing fundamentals
An introduction to routing and its components.
- Routing overview.
- Routing tables.
- Routing instances.
- Static routing.
- Dynamic routing.
Workshop: Mastering routing.
Routing policy
This module introduces routing policies.
- Overview.
- Routing policy case study.
Workshop: Applying routing policies.
Firewall filters
Learn to configure firewall filters in Junos OS.
- Overview.
- Firewall filter case study.
- Unicast Reverse Path Forwarding checks.
Workshop: Configuring firewall filters.
Class of Service
This module covers CoS components.
- Overview.
- Traffic classification.
- Traffic queuing.
- Traffic scheduling.
- Case study.
Workshop: Mastering Class of Service.
JTAC procedures
Understand JTAC procedures.
- Opening a support case.
- Customer support tools.
- Transferring files to JTAC.
Security concepts
Explore Junos OS security considerations.
- Security challenges.
- Juniper network security.
Audience
This course is for IT professionals responsible for configuring and monitoring devices running Junos OS.
Prerequisites
Basic knowledge of networking, the Open Systems Interconnection (OSI) reference model and TCP/IP is required.
Teaching and assessment methods
- Initial skills assessment
- Training materials provided to participants
- Continuous assessment throughout the course
- End-of-course feedback questionnaire
- Combination of theory and practical application
- Attendance records
- Post-course follow-up evaluation
- Practical exercises
Dates and sessions
Choose the date and delivery format that suit you.
No upcoming sessions are currently available.
