Junos Enterprise Switching (JEX)

Target Audience

This course benefits individuals responsible for configuring and monitoring EX Series switches.


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) and the Junos Routing Essentials (JRE) courses prior to attending this class.

Course Objectives

After successfully completing this course, you should be able to:
List the benefits of implementing switched LANs.
Describe transparent bridging concepts and operations.
Describe terms and design considerations for switched LANs.
List enterprise platforms that support Layer 2 switching.
Configure interfaces for Layer 2 switching operations.
Display and interpret the Ethernet switching table.
Explain the concept of a VLAN.
Describe access and trunk port modes.
Configure and monitor VLANs.
Describe voice VLAN and native VLAN concepts.
Explain inter-VLAN routing operations.
Configure and monitor inter-VLAN routing.
Explain when a spanning tree is required.
Describe STP and Rapid Spanning Tree Protocol (RSTP) operations.
List some advantages of using RSTP over STP.
Configure and monitor RSTP.
Describe the bridge protocol data unit (BPDU), Loop, and Root protection features.
Configure and monitor the BPDU, Loop, and Root protection features.
List and describe various port security features.
Configure and monitor port security features.
Describe the storm control feature.
Configure and monitor storm control.
Describe firewall filter support for EX Series Ethernet Switches.
Implement and monitor the effects of a firewall filter.
Describe the basic concepts and operational details of a virtual chassis.
Implement a virtual chassis with multiple EX4200 switches.
List and describe some features that promote high availability.
Configure and monitor high availability features.

Course Outline

Day 1

Chapter 1: Course Introduction

Chapter 2: Layer 2 Switching
Ethernet Bridging Basics
Terminology and Design Considerations
Overview of Enterprise Switching Platforms
Enabling and Monitoring Layer 2 Switching Operations
Lab 1: Implementing Layer 2 Switching

Chapter 3: Virtual Networks
Overview of VLANs
Configuring and Monitoring VLANs
Voice VLAN
Native VLAN
Routed VLAN Interfaces
Lab 2: Implementing Virtual Networks

Chapter 4: Spanning Tree
Spanning Tree Protocol
Rapid Spanning Tree Protocol
Configuring and Monitoring STP and RSTP
Protection Features: BPDU Protection
Protection Features: Loop Protection
Protection Features: Root Protection
Lab 3: Implementing Spanning Tree

Day 2

Chapter 5: Port Security
MAC Limiting
DHCP Snooping
Dynamic ARP Inspection (DAI)
IP Source Guard
Lab 4: Implementing Port Security

Chapter 6: Device Security and Firewall Filters
Storm Control
Firewall Filters
Lab 5: Implementing Storm Control and Firewall Filters

Chapter 7: Virtual Chassis
Overview of Virtual Chassis
Configuring and Monitoring a Virtual Chassis
Lab 6: Implementing Virtual Chassis Systems

Chapter 8: High Availability Features
Overview of High Availability Networks
Link Aggregation Groups
Redundant Trunk Groups
Lab 7: Implementing High Availability Features

Appendix A: Ethernet Ring Protection Switching

Appendix B: Multiple Spanning Tree Protocol

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