Juniper Course

course overview

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This two-day course is designed to provide students with intermediate switching knowledge and configuration examples using Junos Enhanced Layer 2 Software (ELS). 

This course includes an overview of switching concepts and operations, VLANs, the Rapid Spanning Tree Protocol (RSTP), port and device security features, and high availability (HA) features. 

Through demonstrations and hands-on labs, students will gain experience in configuring and monitoring the Junos operating system (OS) and in monitoring device operations. 

This course uses Juniper Networks EX4300 Series Ethernet switches for the hands-on components, but lab environment does not preclude the course from being applicable to other Juniper hardware platforms running Junos OS. 

This course is based on Junos OS Release 21.4R1.12.

Course Level

Junos Enterprise Switching (JEX) is an intermediate-level course.

Relevant Juniper Product

• EX Series • QFX Series


This course benefits individuals responsible for configuring and monitoring EX Series switches running Junos Enhanced Layer 2 Software (ELS) 

Skills Gained

• 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. 

• List and describe some features that promote high availability. 

• Configure and monitor high availability features. 

• Describe the basic concepts and operational details of a virtual chassis. 

• Implement a virtual chassis with multiple EX4300 switches. 

• Explain the concepts of Multiple Spanning Tree Protocol (MSTP). 

• Configure and monitor MSTP. 

• Discover, configure, and troubleshoot EX Series switches using Junos Space Network Director.


• Basic networking knowledge and an understanding of the Open Systems Interconnection (OSI) reference model and the TCP/IP protocol suite 

• Complete the Introduction to the Junos Operating System (IJOS) course, or equivalent knowledge


What is Juniper? Suppliers of high performance, secure and reliable IP networks and products, Juniper Networks provides small, medium and large enterprises with a complete array of networking solutions, from devices to data centres and from consumers to cloud providers.

Running from a single operating (OS) system - JUNOS, Juniper's main products include the Juniper M-Series, Juniper T- Series, Juniper E-Series, Juniper J-Series, Juniper NetScreen, Ethernet Routers, Ethernet switches and firewall security which includes the award winning IDP Series Intrusion Detection and Prevention Appliances.

Juniper currently have 4 main certification tracks: Juniper Networks Certified Internet Expert (JNCIE), Juniper Neworks Certified Internet Professional (JNCIP), Juniper Networks Certified Internet Specialist (JNCIS) and Juniper Networks Certified Internet Associate (JNCIA) and some non-Junos certifications; E Series, Firewall/VPN, SSL, Intrusion Detection and Prevention (IDP), WX Series, Unified Access Control (UAC).

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