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Junos Troubleshooting in the NOC (JTNOC)


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  • 4 Days Course
    Service Provider

    Classroom + Online

    Course Details


    This four-day course is designed to provide introductory troubleshooting skills for engineers in a network operations center (NOC) environment. Key topics within this course include troubleshooting methodology, troubleshooting tools, hardware monitoring and troubleshooting, interface monitoring and troubleshooting, troubleshooting the data plane and control plane on devices running the Junos operating system, staging and acceptance methodology, troubleshooting routing protocols, monitoring the network, and working with JTAC. This course is based on Junos OS Release 12.2R2.5.


    Course Level:

    Junos Troubleshooting in the NOC is an introductory-level course.


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

    • Reduce the time it takes to identify and isolate the root cause of an issue impacting your network.
    • Gain familiarity with Junos products as they pertain to troubleshooting.
    • Become familiar with online resources valuable to Junos troubleshooting.
    • Gain familiarity with Junos tools used in troubleshooting.
    • Identify and isolate hardware issues.
    • Troubleshoot problems with the control plane.
    • Troubleshoot problems with interfaces and other data plane components.
    • Describe the staging and acceptance methodology.
    • Troubleshoot routing protocols.
    • Describe how to monitor your network with SNMP, RMON, Junos Traffic Vision (formerly known as JFlow), and port mirroring.
    • Become familiar with JTAC procedures.


    Day 1

    Chapter 1: Course Introduction

    Chapter 2: Troubleshooting as a Process

    • Before You Begin
    • The Troubleshooting Process
    • Challenging Network Issues
    • The Troubleshooting Process Lab

    Chapter 3: Junos Product Families

    • The Junos OS
    • Control Plane and Data Plane
    • Field-Replaceable Units
    • Junos Product Families
    • Identifying Hardware Components Lab

    Chapter 4: Troubleshooting Toolkit

    • Troubleshooting Tools
    • Best Practices
    • Monitoring Tools and Establishing a Baseline Lab

    Day 2

    Chapter 5: Hardware and Environmental Conditions

    • Hardware Troubleshooting Overview
    • Memory and Storage
    • Boot Monitoring
    • Hardware-Related System Logs
    • Chassis and Environmental Monitoring
    • Monitoring Hardware and Environmental Conditions Lab

    Chapter 6: Control Plane

    • Control Plane Review
    • System and User Processes
    • Monitoring Routing Tables and Protocols
    • Monitoring Bridging
    • Monitoring the Address Resolution Protocol
    • Control Plane Monitoring and Troubleshooting Lab

    Chapter 7: Data Plane: Interfaces

    • Interface Properties
    • General Interface Troubleshooting
    • Ethernet Interface Troubleshooting
    • Monitoring and Troubleshooting Ethernet Interfaces Lab

    Chapter 8: Data Plane: Other Components

    • Definition of a Data Plane Problem
    • Data Plane Components
    • Data Plane Forwarding
    • Load-Balancing Behavior
    • Firewall Filters and Policers
    • Data Plane Troubleshooting Case Study
    • Isolate and Troubleshoot PFE Issues Lab

    Day 3

    Chapter 9: Staging and Acceptance Testing

    • Physical Inspection and Power-on
    • General System Checks
    • Interface Testing

    Chapter 10: Troubleshooting Routing Protocols

    • Troubleshooting OSPF
    • Troubleshooting BGP
    • Troubleshooting Routing Loops and Route Oscillation
    • Troubleshooting Routing Protocols Lab

    Chapter 11: High Availability

    • High Availability Overview
    • Graceful Routing Engine Switchover
    • Graceful Restart
    • Nonstop Active Routing and Bridging
    • Unified In-Service Software Upgrade

    Chapter 12: Network Monitoring

    • SNMP
    • RMON
    • Flow Monitoring
    • Monitoring the Network Lab

    Chapter 13: JTAC Procedures

    • Opening a Support Case
    • Customer Support Tools
    • The Content of a PR
    • Transferring Files to JTAC

    Appendix A: Interface Troubleshooting

    • Interface Troubleshooting Chart
    • Troubleshooting Various Interface Types

    Target Audience

    • The course content is aimed at operators of devices running the Junos OS in a NOC environment. These operators include network engineers, administrators, support personnel, and reseller support personnel.


    • Students should have basic networking knowledge and an understanding of the Open Systems Interconnection (OSI) reference model and the TCP/IP protocol suite. Students should also attend the Introduction to the Junos Operating System (IJOS) course and the Junos Routing Essentials (JRE) course, or have equivalent experience prior to attending this class.