• Course overview
  • Course details
  • Prerequisites

Course overview

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 Junos OS, securing the control plane, staging and acceptance methodology, troubleshooting routing protocols, monitoring the network, troubleshooting vMX devices, and working with JTAC. This course uses virtual MX devices in the lab and is based on Junos OS Release 19.3R2.

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Course details

Day 1

Module 1: Course Introduction

Module 2: Troubleshooting as a Process
• Before You Begin
• The Troubleshooting Process
• Challenging Network Issues

Module 3: Junos Product Families
• The Junos OS
• Control Plane and Data Plane
• Field-Replaceable Units
• Junos Product Families

Lab: Identifying Hardware Components

Module 4: Troubleshooting Toolkit
• Troubleshooting Tools
• Best Practices

Lab: Using Monitoring Tools and Establishing a Baseline

Day 2

Module 5: Hardware and Environmental Conditions
• Hardware Troubleshooting Overview
• Memory and Storage
• Boot Monitoring
• Hardware-Related System Logs
• Chassis and Environmental Monitoring

Lab: Monitoring Hardware and Environmental Conditions

Module 6: Control Plane
• Control Plane Review
• System and User Processes
• Monitoring Routing Tables and Protocols
• Monitoring Bridging
• Monitoring the Address Resolution Protocol

Lab: Control Plane Monitoring and Troubleshooting

Module 7: Control Plane Protection
• Protection Overview
• DDoS Protection
• Loopback Filter

Lab: Monitoring and Troubleshooting DDoS Protection

Module 8: Data Plane – Interfaces
• Interface Properties
• General Interface Troubleshooting
• Ethernet Interface Troubleshooting

Lab: Monitoring and Troubleshooting Ethernet Interfaces

Day 3

Module 9: 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

Lab: Isolate and Troubleshoot PFE Issues

Module 10: Staging and Acceptance Testing
• Initial Inspection and Power-On
• General System Checks
• Interface Testing

Module 11: Troubleshooting Routing Protocols
• Troubleshooting OSPF
• Troubleshooting BGP
• Troubleshooting Routing Loops and Route Oscillation

Lab: Troubleshooting Routing Protocols

Module 12: High Availability
• High Availability Overview
• Graceful Routing Engine Switchover
• Graceful Restart
• Nonstop Active Routing and Bridging
• Unified In-Service Software Upgrade

Day 4

Module 13: Network Monitoring
• SNMP
• RMON
• Telemetry
• Flow Monitoring

Lab: Monitoring the Network

Module 14: vMX Troubleshooting
• vMX Overview
• Troubleshooting

Lab: Monitoring vMX

Module 15: 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

Appendix B: Junos RPM
• RPM Overview
• RPM Components
• RPM Configuration
• RPM Monitoring

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Prerequisites

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.

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