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Course Overview

The course is an intermediate-level, instructor-led course that focuses on the operation and troubleshooting of Juniper Networks M-series and T-series platforms. This course exposes attendees to fault-analysis procedures and troubleshooting techniques similar to those used by engineers in the Juniper Networks Technical Assistance Center (JTAC) to enable rapid problem determination and resolution.

Intended Audience

The primary audiences for this course include network operations and engineering support staff.

Course Level

OTJNR is an intermediate-level course.

Prerequisites

The OTJNR prerequisites are the following:

• TCP/IP basics

While not required, familiarity with the command-line interface of a routing platform or UNIX system is helpful.

Course Contents

Day 1

Module 0: Introduction and Overview

Module 1: Overview of JUNOS Routing Platform Hardware

• JUNOS Routing Platform Overview
• Installation and Handling Guidelines
• Platform Architecture and Components
• RTOS Packet Flow and Software Functionality
• A/B/C Chipset Packet Flow and ASIC Functionality
• L/M/N/R Chipset Packet Flow and ASIC Functionality
• Interface Overview

Module 2: The JUNOS Software CLI

• Gaining Access to the CLI
• CLI Operational Modes and Feature Overview
• Configuration Mode
• Lab 1: The JUNOS Software CLI

Module 3: The M-series and T-series Troubleshooting Took Kit

• Caveats and Warnings
• Troubleshooting Methodology
• Troubleshooting Tools
• Best-Practices Case Study
• Sample Lab Topology
• Lab 2: Troubleshooting Tools and Recommendations

Day 2

Module 4: Hardware Troubleshooting

• Hardware Troubleshooting Overview
• Power-Up, Power-Down, and Boot Media
• Using the CLI to Troubleshoot
• Case Study
• Lab 3: Chassis Hardware Troubleshooting

Module 5: Software Troubleshooting

• JUNOS Software Overview
• Monitoring Upgrades and Installation
• Updating Removable Media
• Core Files
• Password Recovery
• Case Study
• Lab 4: JUNOS Software Troubleshooting

Module 6: Interface Troubleshooting

• Interface Configuration Overview
• General Interface Troubleshooting
• Media-Specific Interface Troubleshooting
• Case Study
• Lab 5: Interface Troubleshooting

Day 3

Module 7: Troubleshooting and Monitoring the Forwarding Plane

• Definition of a Forwarding Plane Problem
• Displaying Next Hops in the RE and PFE
• Confirming Load-Balancing Behavior
• Displaying Interface Firewall Filters, Leaky Buckets, and Policers
• Diagnosing MTU-Related Problems
• Forwarding Plane Troubleshooting Case Study

Module 8: JTAC Procedures

• Opening a Support Case
• Support Services
• How to Use FTP to Send Files to JTAC

Appendix A: M-series and T-series Platform Details

Appendix B: Troubleshooting Routing Platforms

• Lab 6: Protocol Troubleshooting (Optional)

Appendix C: Additional Features

Appendix D: General Guidelines for Staging and Acceptance Testing of M-series Routers

 

Certification Acronynm: RETIRED: JNCIS-M

Certification Name: RETIRED: Specialist

Exam Code: JN0-303

Course Acronym: OTJNR (Routing)

Certification Text

RETIRED

Replaced with JN0-360

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