Advanced Junos Enterprise Switching (AJEX) Course Overview

Advanced Junos Enterprise Switching (AJEX) Course Overview

The Advanced Junos Enterprise Switching (AJEX) course is designed to provide networking professionals with in-depth knowledge and skills to perform advanced configuration on Juniper Networks switches. The course covers complex Layer 2 technologies such as Virtual Local Area Networks (VLANs), Spanning Tree Protocols, and VLAN Tunneling, enabling learners to automate VLAN administration and troubleshoot advanced scenarios. It delves into Authentication and Access Control, offering insights into sophisticated network access security solutions. The module on Deploying IP Telephony Features equips participants with the expertise to implement voice services over the network, while Class of Service (CoS) instruction is crucial for ensuring QoS and managing traffic prioritization. The course culminates with a focus on Monitoring and Troubleshooting Layer 2 networks, providing essential troubleshooting tools and techniques. Additionally, it includes a module on ELS and Non-ELS Configuration Examples, guiding through Enhanced Layer 2 Software (ELS) configuration. This comprehensive course is beneficial for network professionals seeking to enhance their skills in managing Juniper Networks switches and ensuring efficient, secure, and high-performance network environments.

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Course Advisor

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Tarun Patial

14+ Years Experience

I am a Cisco Certified professional and a corporate trainer. I have delivered quality training on various Cisco technologies such as CCNA, CCNP, CCNA SP, and CCDA, CCNP DC. I have in-depth knowledge of technologies like MPLS, BGP, OSPF, ISIS, EIGRP, VPN Layer 2, and Layer 3 Switching, Data Center Technologies Like vPC, Vxlan,OTV, ACI,UCS, Storage,FC, FCOE,FCIP, IVR,NPV, NPIV ,nexus dashboard, SD access, SD wan,ACI etc.

Associated with Koenig since September 2011.

Course Prerequisites

To ensure that you gain the maximum benefit from your Advanced Junos Enterprise Switching (AJEX) course, we recommend that you have the following knowledge and experience before starting:


  • Basic understanding of the Junos OS as covered in the Introduction to the Junos Operating System (IJOS) course.
  • Understanding of networking fundamentals and basic routing as covered in the Junos Routing Essentials (JRE) course.
  • Prior experience with and knowledge of the fundamentals of Layer 2 Switching and VLANs.
  • Familiarity with the Spanning Tree Protocol (STP) and its variations.
  • Basic knowledge of network security and access control.
  • An understanding of basic quality of service (QoS) concepts is helpful but not required.

These prerequisites are designed to provide a solid foundation for the AJEX course material and to ensure that all participants can keep pace with the advanced topics that will be covered. If you have any concerns about whether your background aligns with these prerequisites, please reach out to us for guidance. We are committed to helping you succeed and can provide resources to help you prepare for the AJEX course.


Exam-Format Table
Exam ComponentDetails
Exam NameAdvanced Junos Enterprise Switching (AJEX)
Exam TypeMultiple Choice Questions (MCQs), Simulations (if applicable)
Total QuestionsTypically, ranges between 65-75 questions
Passing Score60-70% (Note: Juniper does not always publicly disclose the exact score)
Exam Duration90-120 minutes
LanguageEnglish
Exam ProviderJuniper Networks, via Pearson VUE
Exam RegistrationThrough Juniper Networks or authorized testing centers, Pearson VUE
Certification ValidityGenerally 3 years (subject to change by vendor)
Recommended TrainingRecommended Juniper Training: Junos Enterprise Switching (AJEX)

Target Audience for Advanced Junos Enterprise Switching (AJEX)

The Advanced Junos Enterprise Switching course is designed for network professionals seeking expertise in Junos switches and networks.


  • Network Engineers
  • Systems Engineers
  • Network Support Personnel
  • Network Administrators
  • Network Consultants
  • Technical Support Engineers
  • Juniper Networks Certification Program (JNCP) Aspirants
  • IT Professionals working with Junos OS-based devices


Learning Objectives - What you will Learn in this Advanced Junos Enterprise Switching (AJEX)?

  1. Introduction: The Advanced Junos Enterprise Switching (AJEX) course hones skills in configuring and troubleshooting advanced Junos switch features, enhancing networks with advanced routing, security, and monitoring.

  2. Learning Objectives and Outcomes:

  • Understand Virtual Local Area Networks (VLANs) and automate VLAN administration to streamline network segmentation and management.
  • Implement tunneling for Layer 2 traffic to extend VLANs across geographically dispersed networks.
  • Review and deepen knowledge of Spanning Tree Protocol (STP) and its advanced variations, including Multiple Spanning Tree Protocol (MSTP) and VLAN Spanning Tree Protocol (VSTP).
  • Develop troubleshooting skills for advanced Spanning Tree issues, ensuring network stability and resilience.
  • Gain insight into authentication and access control features within Juniper Networks, enhancing network security and user management.
  • Explore deployment strategies and features for IP Telephony, facilitating reliable voice-over-IP (VoIP) services across the enterprise.
  • Examine the principles and configuration of Class of Service (CoS) to prioritize network traffic and ensure quality of service (QoS) for critical applications.
  • Utilize Junos Space Network Director to manage CoS profiles, simplifying the administration of complex QoS policies.
  • Apply monitoring and troubleshooting tools to effectively diagnose and resolve Layer 2 network issues, minimizing downtime.
  • Learn Enhanced Layer 2 Switching (ELS) and non-ELS configuration examples, including switch options, integrated routing and bridging (IRB), and Q-in-Q tagging.
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