Introduction to Junos Operating System (IJOS)

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 Juniper products and discusses the key architectural components of the Junos software. Keytopics include user interface options with a heavy focus on the command-line interface (CLI), 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 21.1R1.11

Virtual Classroom Live

Prerequisites

• Basic networking knowledge • Understanding of the Open Systems Interconnection (OSI) reference model • Understanding of the TCP/IP protocol suite • Introduction to the Junos Operating System and Getting Started with Networking eLearning course, or equivalent knowledge

Target Audience

What You’ll Learn

• Describe the basic design architecture of the Junos OS.
• 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 Outline

DAY 1
1. Course Introduction
2. Junos Operating System Fundamentals
• Describe the Junos operating system and its basic design architecture
• Identify and provide a brief overview of Juniper products
3. Junos CLI Operational Mode
• Enter operational mode
• Locate various help options within the Junos CLI
• Execute monitoring and troubleshooting commands
4. Junos CLI Configuration Mode
• Enter configuration mode
• Navigate through the Junos configuration hierarchy
• Modify the configuration on a Juniper device
• Use common configuration mode commands
5. J-Web Interface
• Configure basic system settings and interfaces
• Perform device administration
Lab 1: User Interface Options
6 .Initial System Configuration
• Load factory-default configuration
• List and perform initial system configuration tasks
Lab 2: Initial System Configuration

DAY 2
7 .User Authentication Archiving
• Describe and configure user authentication
• Archive configurations
Lab 3: User Authentication and Archiving
8 .System Logging, Tracing, NTP, and SNMP
• Configure and analyze system logging and tracing
• Configure and monitor NTP
• Configure and monitor SNMP
Lab 4: System Logging, Tracing, NTP, and SNMP
9 .Operational Monitoring and Maintenance
• Monitor platform and interface operations
• Describe and use the available network utilities
• Perform password recovery
Lab 5: Operational Monitoring and Maintenance
10. Upgrading the Junos OS
• Perform storage and system cleanup tasks
• Perform the Junos upgrade
Lab 6: Upgrading the Junos OS
11. Interface Configuration Examples
• Configure various interface types
• Use configuration groups to configure interfaces
12. Routing Fundamentals
• Explain the basic routing concepts
• Describe the routing table and the forwarding table
• Describe the functionality of routing instances
• Configure and monitor a routing instance
Lab 7: Routing Fundamentals
13. Static and Dynamic Routing
• Configure and monitor static routes
• Describe the functionality of dynamic routing
• Configure and monitor OSPF
• Describe how routing works using IPv6
Lab 8: Static and Dynamic Routing
DAY 3
14. Routing Policy
• Describe the routing policy and explain the default Junos import and export routing policies
• Identify various options in the match criteria and action blocks of a routing policy
• Implement a routing policy for a given use case
Lab 9: Routing Policy
15. Firewall Filters
• Describe the functionality and the framework of firewall filters
• Implement firewall filters for a given use case
• Implement a policer within Junos
• Describe the operation and configuration of unicast RPF
Lab 10: Firewall Filters
16. Class of Service
• Describe the purpose and benefits of CoS
• Implement traffic classification within Junos
• Describe the traffic queuing within Junos
• Configure traffic scheduling within Junos
• Implement CoS for a given use case
Lab 9: Class of Service
17. JTC Procedures
• Follow recommended procedures to open a JTAC
support case
• Access Juniper online tools to manage Juniper products
• Use FTP to transfer large files to JTAC
18. Juniper Security Concepts
• Identify high-level security challenges in today’s networks
• Describe the Juniper Connected Security components
A. Appendix: IPv6 Fundamentals
• Describe the differences between IPv4 and IPv6
• Explain the IPv6 address format and the different address types
• Explain how IPv6 stateless and stateful autoconfigurations work
• Configure and monitor IPv6 routing
• Implement IPv6-over-IPv4 tunnels

Labs Outline

Related Certifications

Describe the Junos operating system and provide a brief overview of Juniper products.
Describe the Junos operating system and its basic design architecture.
• Identify and provide a brief overview of Juniper products.
• Use the Junos CLI and its operational mode to monitor and control Juniper devices.
• Enter operational mode.
• Locate various help options within the Junos CLI.
• Execute monitoring and troubleshooting commands.
• Configure a device using the CLI.
• Enter configuration mode.
• Navigate through the Junos configuration hierarchy.
• Modify the configuration on a Juniper device.
• Use common configuration mode commands.
• Use the J-Web interface to make configuration changes, monitor and maintain Junos devices.
• Configure basic system settings and interfaces.
• Perform device administration.
• Perform initial system configuration using Junos OS.
• Load factory-default configuration.
• List and perform initial system configuration tasks.
• Describe interface types and perform basic interface configuration tasks.
• Configure user authentication and device backups.
• Describe and configure user authentication.
• Archive configurations.
• Configure System Logging, Tracing, NTP, and SNMP in Junos OS.
• Configure and analyze system logging and tracing.
• Configure and monitor NTP.
• Configure and monitor SNMP.
• Monitor and maintain Junos OS.
• Monitor platform and interface operations.
• Describe and use the available network utilities.
• Perform password recovery.
• Upgrade the Junos OS.
• Perform storage and system cleanup tasks.
• Perform the Junos upgrade.
• Describe the interfaces configuration hierarchy

Introduction to Junos Operating System (IJOS)