Introduction to the Junos Operating System (IJOS) Online

Kursinhalt

• Course Introduction
• SSH and Operational Mode
• Refresher—IPv6 Addressing
• Network Interfaces, Part 1—Interface Naming and Logical Units
• Network Interfaces, Part 2—Revealing and Filtering Detailed Interface Output
• Reading a Junos OS Configuration
• Configuring Junos OS—The Basics
• Configuring Junos OS—Become a Power User
• Routing Tables, Route Preference, and Longest Prefix Matches
• Static Routes
• Dynamic Routing Protocols—The Theory
• Dynamic Routing Protocols—Configuring OSPF
• Junos OS Switches, Part 1—VLANs, MAC Tables, and Access Ports
• Junos OS Switches, Part 2—Trunk Ports
• Junos OS Device Administration
• Setting Up a Brand-New Junos OS Device
• Junos OS Architecture—The Control Plane and the Data Plane
• Junos OS Architecture—The Software That Powers Junos OS
• Logging, Troubleshooting, and Monitoring
• Junos OS Firewall Filters, Part 1—The Theory
• Junos OS Firewall Filters, Part 2—The Practical
• Junos OS Configuration—A Deeper Dive
• Interfaces—A Deeper Dive
• Junos OS Architecture—APIs and Automation
• Where Do You Go from Here?

Self-Study Modules

• Routing—A Deeper Dive
• Junos OS Firewall Filters—A Deeper Dive
• Logging, Troubleshooting, and Monitoring—A Deeper Dive
• Junos OS Device Administration—A Deeper Dive
• Junos OS Routing Policy
• Upgrading Junos OS
• J-Web
• Refresher—Cables and Ethernet
• Refresher—IPv4 and Subnetting
• Refresher—Switches, MAC Learning, Broadcast Domains, and VLANs
• Refresher—TCP and UDP

Voraussetzungen

• Students are highly recommended to have watched the self-study Getting Started with Networking (e-learning) video series before attending this course.
• Basic understanding of IPv4 and IPv6.
• Basic understanding of Ethernet and MAC address learning.
• Basic understanding of TCP and UDP.
• Basic understanding of the layered OSI and TCP/IP models.

Zielgruppe

• Individuals who work with routers, switches, and firewalls that run Junos OS
• Individuals who want to learn how to manage Junos OS using the CLI
• Individuals who want to learn a basic understanding of IPv4, IPv6, routing switching, troubleshooting, packet filtering, and Junos administration concepts

Detaillierter Kursinhalt

DAY 1

Course Introduction

Introducing Junos OS and the Hardware It Powers

• Test your knowledge of some networking fundamentals
• Explain the advantages of Junos OS
• Define the terms fixed-port chassis, modular chassis, and Routing Engine
• Describe the advantages of Juniper Networks MX Series, PTX Series, and ACX Series routers, and SRX Series Firewalls

SSH and Operational Mode

• Demonstrate how to use SSH to log in to a device running Junos OS
• Explain the purpose of operational mode
• Describe some of the most immediately useful show system commands
• Demonstrate how to use built-in command reminders, auto-completion, and the Junos hierarchy

Lab 1: SSH and Operational Mode

Refresher—IPv6 Addressing

• Demonstrate how to use hexadecimal to read IPv6 addresses, MAC addresses, and memory addresses
• Explain the format of IPv6 addresses and subnet masks, and the purpose of link-local addressing

Network Interfaces, Part 1—Interface Naming and Logical Units

• Define the concepts of physical network interfaces, FPCs, and PICs
• Demonstrate how the show interfaces terse command verifies logical interfaces, interface status, and IP addresses

Network Interfaces, Part 2—Revealing and Filtering Detailed Interface Output

• Explain how to read the output of the full show interfaces command
• Demonstrate how to use the CLI pipe to filter the output of any command

Lab 2: Network Interfaces and Logical Units

Reading a Junos OS Configuration

• Explain the difference between viewing a Junos configuration in hierarchy view and in set view, and the advantages of each method
• Demonstrate how to read a Junos OS router configuration in set view
• Demonstrate how to read a Junos OS router configuration in hierarchy view

Lab 3: Reading a Junos OS Configuration

DAY 2

Configuring Junos OS—The Basics

• Describe how the candidate configuration helps to prevent mistakes during configuration changes
• Demonstrate how to commit changes, and how to roll back to previous configurations
• Describe how to deploy, edit, and delete pieces of configuration
• Explain how to use the commit confirmed feature

Lab 4: Configuring Junos OS—The Basics

Configuring Junos OS—Become a Power User

• Explain how to lock the candidate configuration, and how to deactivate and disable pieces of configuration
• Demonstrate how to deploy configuration within a specific part of the hierarchy
• Explain how to renameand replace configuration
• Describe the keyboard shortcuts that bring efficiency to your CLI session

Lab 5: Configuring Junos OS—Become a Power User

Routing Tables, Route Preference, and Longest Prefix Matches

• Define the difference between directly connected, static, and dynamic routes
• Explain how route preference selects the best route to a destination
• Explain the process of longest prefix match lookups
• Demonstrate how to view and verify the inet.0 and inet6.0 routing tables

Lab 6: Routes and Routing Tables

Static Routes

• Explain the advantages and trade-offs of using static routes
• Demonstrate how to configure and verify IPv4 and IPv6 static routes
• Explain the purpose of a default route, and deploy one to enable Internet connectivity

Lab 7: Static Routes

Dynamic Routing Protocols—The Theory

• Explain how routing protocols solve the problems of static routes
• Describe the difference between interior and exterior gateway protocols, and the advantages of link-state protocols such as OSPF and IS-IS

Dynamic Routing Protocols—Configuring OSPF

• Configure and verify a basic IPv4 OSPF deployment
• Configure and verify a basic IPv6 OSPF deployment

Lab 8: Dynamic Routing Protocols

DAY 3

Junos OS Switches, Part 1—VLANs, MAC Tables, and Access Ports

• Test your knowledge of some Layer 2 switching fundamentals
• Demonstrate how to configure and verify VLANs on a switch running Junos OS
• Describe how to configure access ports and verify MAC tables

Junos OS Switches, Part 2—Trunk Ports

• Describe how to deploy trunk ports on Junos OS switches
• Demonstrate how to configure multiple logical units on IP interfaces
• Explain the advantages of Juniper Networks EX and QFX Series Switches, and the wireless, wired, and WAN solutions offered by Mist AI

Lab 9: IP Interfaces with Multiple Logical Units

Junos OS Device Administration

• Explain the advantage of out-of-band management interfaces
• Describe how to maintain accurate time on a Junos OS device
• Explain the DNS resolution process, and how to enable DNS resolution
• Describe how to create new user accounts for management
• Demonstrate the features of the J-Web graphical interface

Setting Up a Brand-New Junos OS Device

• Describe the variety of default configurations you will find on Junos OS devices
• Explain how to use the console port, and the one piece of mandatory configuration on new devices
• Demonstrate some recommended initial system settings
• Explain the advantage of zero-touch provisioning

Lab 10: Junos OS Device Administration and Initial Settings

Junos OS Architecture—The Control Plane and the Data Plane

• Define the control plane, the forwarding plane, and the Packet Forwarding Engine
• Explain the difference between transit traffic and exception traffic

Junos OS Architecture—The Software That Powers Junos OS

• Describe the modular nature of Junos OS daemons, and explain how Junos OS is based on FreeBSD
• Explain the advantages offered by Junos OS Evolved

Logging, Troubleshooting, and Monitoring

• Explain how to create log files
• Demonstrate network connectivity troubleshooting commands
• Describe how to view interface statistics, errors, and live control plane traffic
• Demonstrate some helpful CLI management troubleshooting tricks

Lab 11: Logging, Troubleshooting, and Monitoring

DAY 4

Junos OS Firewall Filters, Part 1—The Theory

• Test your knowledge on some important transport layer fundamentals
• Define the difference between stateful security policies and stateless firewall filters
• Describe how firewall filters use named terms to take action on packets, based on your match conditions
• Demonstrate the logic involved in processing terms in a firewall filter

Junos OS Firewall Filters, Part 2—The Practical

• Describe the configuration of a Junos OS firewall filter
• Demonstrate how to use the insert command to change the order of terms in a firewall filter

Lab 12: Junos OS Firewall Filters

Junos OS Configuration—A Deeper Dive

• Describe how to annotate, lock, and redact parts of the configuration
• Explain how to create and manage files on your Junos device
• Describe how to use load commands to quickly apply configuration in bulk
• Demonstrate the ways that you can automate aspects of a Junos OS configuration

Lab 13: Junos OS Configuration—A Deeper Dive

Interfaces—A Deeper Dive

• Describe the configuration of IRB and loopback interfaces
• Explain how source IP addresses are selected from multiple options on an interface
• Demonstrate the advantages of load balancing and of aggregated Ethernet interfaces

Lab 14: Interfaces—A Deeper Dive

Junos OS Architecture—APIs and Automation

• Explain how Junos OS uses an XML API as an interface to the CLI and to a variety of automation options

Where Do You Go from Here?

• Describe how to continue getting hands-on practice with Junos OS once the course is complete
• Explain the Juniper Networks certification track
• Explain some of the most popular Juniper Networks courses that you might choose to take next

SELF-STUDY MODULES

Routing—A Deeper Dive

• Demonstrate a variety of advanced static route features
• Demonstrate the functionality and configuration of routing instances
• Describe the advantages of OSPF areas, IS-IS levels, and BGP as an exterior gateway protocol

Junos OS Firewall Filters—A Deeper Dive

• Demonstrate some advanced firewall filter match conditions and actions
• Explain the benefits of control plane firewall filter protection
• Describe how policers can rate-limit any traffic of your choosing
• Demonstrate some firewall filter caveats and potential best practices

Logging, Troubleshooting, and Monitoring—A Deeper Dive

• Demonstrate how monitoring systems use SNMP to interact with a device
• Explain how traceoptions offer advanced troubleshooting visibility of any problem
• Describe the error information available in the show interfaces extensive command
• Demonstrate some advanced CLI troubleshooting commands and filtering tools

Junos OS Device Administration—A Deeper Dive

• Explain the meaning of AAA, and demonstrate how to enable RADIUS and TACACS+ authentication
• Describe the order in which user authentication methods are checked
• Explain how to customize user accounts with custom permission classes and custom idle timeouts

Junos OS Routing Policy

• Explain how import and export policies can readvertise prefixes between protocols
• Describe the CLI syntax of a routing policy
• Demonstrate how a routing policy can export static routes into OSPF
• Describe some important advanced routing policy features and behaviors

Upgrading Junos OS

• Describe how to download a Junos OS image from the Juniper Networks website
• Demonstrate how to check available storage, and how to remove unnecessary files
• Demonstrate the Junos OS upgrade procedure
• Describe the most helpful upgrade customization options

J-Web

• Identify the purpose of each individual tab on the J-Web menu
• Configure device administration settings and perform simple tasks such as configuration and file management
• Demonstrate how to configure and monitor a network interface in J-Web
• Use the Feature Explorer to find out if a device supports J-Web

Refresher—Cables and Ethernet

• Explain the difference between copper and fiber-optic networking cables
• Describe how Ethernet uses MAC addresses to pass traffic to the next visible hop in the path

Refresher—IPv4 and Subnetting

• Describe the format of IPv4 addresses, and explain how to create a subnet
• Explain the role of a router in a network

Refresher—Switches, MAC Learning, Broadcast Domains, and VLANs

• Explain the difference between Layer 2 and Layer 3 switches
• Describe how switches and hosts learn MAC addresses
• Define the concept of VLANs and broadcast domains

Refresher—TCP and UDP

• Explain the difference between reliable and best-effort transmission, and between source and destination port numbers