Advanced Junos Enterprise Switching Using Enhanced Layer 2 Software Course Overview

Advanced Junos Enterprise Switching Using Enhanced Layer 2 Software Course Overview

The Advanced Junos Enterprise Switching Using Enhanced Layer 2 Software course is designed to provide network professionals with a deep understanding of Layer 2 Switching technologies using Juniper Networks' Junos OS. The course covers the foundational concepts of Ethernet Bridging, VLANs, and routing instances, as well as advanced topics such as Spanning Tree Protocol, port security, and device security with firewall filters.

Participants will learn about the specifics of configuring and monitoring Virtual Networks, ensuring network security and integrity through various protection features, and understanding the Virtual Chassis technology. Additionally, the course delves into high availability features like link aggregation groups and Nonstop Bridging to ensure network resilience.

By the end of this course, learners will gain practical skills for implementing and managing Juniper Networks switches in enterprise environments, enhancing their ability to maintain a robust, secure, and efficient network infrastructure.

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Course Prerequisites

To ensure that participants are prepared to successfully undertake the Advanced Junos Enterprise Switching Using Enhanced Layer 2 Software course, the following minimum prerequisites are recommended:


  • Understanding of the basic concepts and knowledge of networking fundamentals, such as OSI model, IP addressing, and subnetting.
  • Experience with basic routing concepts and protocols, including an understanding of the interior gateway protocols (IGPs) such as RIP, OSPF, or IS-IS.
  • Familiarity with Junos OS, including skills in using the Junos command-line interface (CLI) for configuring and monitoring Junos devices.
  • Completion of the Introduction to the Junos Operating System (IJOS) course, Junos Routing Essentials (JRE) course, or equivalent working experience with Junos-based devices.
  • Basic knowledge of Ethernet and TCP/IP networking, VLANs, and IP services is essential to grasp the course content effectively.

These prerequisites are meant to provide you with the foundational skills required for the Advanced Junos Enterprise Switching course. With this knowledge base, you will be better equipped to understand the course material and gain the maximum benefit from your training experience.


Exam-Format Table
Exam ComponentDetails
Exam NameAdvanced Junos Enterprise Switching Using Enhanced Layer 2 Software
Exam TypeLikely to include Multiple Choice Questions (MCQs), Practical Labs, or Simulation-Based Questions
Total QuestionsTypically varies, often in the range of 60-70 questions
Passing ScoreGenerally around 60-70% of the total available score
Exam DurationUsually between 90-120 minutes
LanguageEnglish
Exam ProviderJuniper Networks
Exam RegistrationThrough Juniper's official certification website or authorized testing centers
Certification ValidityTypically 3 years (could be subject to renewal requirements)
Recommended TrainingJunos Enterprise Switching Advanced Layer 2 Software Training Course
Advanced Junos Enterprise Switching Using Enhanced Layer 2 Software

Target Audience for Advanced Junos Enterprise Switching Using Enhanced Layer 2 Software

The Advanced Junos Enterprise Switching course enhances Layer 2 networking skills, targeting IT professionals focused on enterprise network management.


  • Network Engineers and Specialists
  • System Engineers
  • Network Administrators and Operations Staff
  • Network Support Personnel
  • IT Professionals preparing for Juniper Networks Certification
  • Data Center Networking Staff
  • Network Designers and Architects
  • Technical Support Personnel working with enterprise switching solutions
  • Security Engineers with a focus on network access control and segmentation
  • Network Consultants involved in designing and implementing enterprise networks
  • Professionals seeking to deepen their knowledge of Junos OS for enterprise environments


Learning Objectives - What you will Learn in this Advanced Junos Enterprise Switching Using Enhanced Layer 2 Software?

Introduction to Learning Outcomes

This course equips participants with advanced skills in Junos OS enterprise switching, focusing on Layer 2 enhancements, security, virtualization, and high availability.

Learning Objectives and Outcomes

  • Understand the fundamentals of Ethernet bridging and Layer 2 switching operations in Junos OS environments.
  • Learn the design considerations and terminology specific to enterprise-level switching platforms.
  • Configure and manage Virtual Local Area Networks (VLANs), including voice and native VLANs, and implement Routed VLAN Interfaces (RVIs).
  • Gain knowledge on the creation and management of virtual networks using routing instances and virtual switches.
  • Master the concepts and configurations of Spanning Tree Protocol (STP), Rapid Spanning Tree Protocol (RSTP), and their protection features such as BPDU, loop, and root protection.
  • Implement port security features like MAC limiting, persistent MAC learning, DHCP Snooping, Dynamic ARP Inspection (DAI), and IP Source Guard to protect against common network threats.
  • Develop an understanding of device-level security via storm control and firewall filters to safeguard network infrastructure.
  • Configure and troubleshoot Juniper Networks' Virtual Chassis technology to enhance scalability and manageability of the switching environment.
  • Acquire skills to ensure network resiliency through High Availability features like Link Aggregation Groups (LAGs), Redundant Trunk Groups (RTGs), and Nonstop Bridging/Active Routing (NSB/NSR).
  • Apply theoretical knowledge in practical scenarios through hands-on lab exercises, reinforcing the concepts and techniques learned throughout the course.

Technical Topic Explanation

Ethernet Bridging

Ethernet bridging is a networking technique used to divide a large network into smaller, manageable segments or to link multiple networks to work as a single unit. This is achieved through a device called an Ethernet bridge, which connects different network segments at the data link layer (Layer 2) of the OSI model. The primary function of an Ethernet bridge is to filter, forward, or flood incoming frames based on the MAC addresses it learns and stores in its bridge table, effectively managing traffic within a network and reducing collisions to enhance performance.

Layer 2 Switching technologies

Layer 2 switching technologies are fundamental components of network infrastructure, primarily dealing with data link layer operations within the OSI model. By using hardware addresses, these switches efficiently direct data between devices on the same network segment, enhancing performance and security. Advanced solutions like Enhanced Layer 2 Software in Juniper networks optimize these processes, supporting sophisticated configurations and scalability. Training through courses such as Advanced Junos Switching and Enterprise Switching Course can empower professionals with the necessary skills to deploy, manage, and troubleshoot Layer 2 solutions in enterprise environments, ensuring robust, efficient network operations.

Routing instances

Routing instances are separate routing tables maintained by a network device like a router or a switch, allowing multiple distinct networks to coexist on the same physical hardware without interacting. This is useful in scenarios requiring policy enforcement, privacy, or overlapping IP spaces. Advanced courses like the Advanced Junos Training or the Juniper Switching Course often cover the setup and management of these instances, using Enhanced Layer 2 Software, part of an Enterprise Switching Course curriculum. This enables more complex network configurations that can be tailored to specific business or technical needs.

Spanning Tree Protocol

Spanning Tree Protocol (STP) is a network protocol that ensures a loop-free topology for any bridged Ethernet local area network. The main function is to prevent bridge loops and the broadcast radiation that results from them. STP identifies and disables redundant paths, selecting a single active path between network devices to send traffic, effectively organizing switches to create a spanning tree. When the network topology changes, such as a device failing or a new switch being added, STP recalculates paths and reconfigures the network, maintaining stability and continuous network service without interruptions.

Port security

Port security is a network security feature on switches, such as those covered in Advanced Junos Switching and Enterprise Switching Course, that restricts access to the network by limiting the devices allowed to connect through a switch port. When port security is enabled, the switch can prevent unrecognized devices from accessing the network, adding a layer of protection against unauthorized users or compromised devices. Through Juniper Switching Courses and Advanced Junos Training, professionals learn to configure and manage port security settings, maximizing security with Enhanced Layer 2 Software to secure their networks effectively.

Device security with firewall filters

Device security with firewall filters helps protect network devices by controlling what kind of traffic is allowed to pass through. Firewalls act like security guards, using predefined rules to decide if incoming data packets are safe or potentially harmful. By setting up firewall filters, especially in networks utilizing Advanced Junos Switching and Enhanced Layer 2 Software, administrators can greatly enhance the security of their networks. This configuration is a crucial topic in any Advanced Junos Training or Juniper Switching Course, and is essential for anyone pursuing an Enterprise Switching Course, safeguarding against unauthorized access and cyber threats.

Virtual Networks

Virtual networks are a technology that allows you to create separate, isolated networks on the same physical hardware. This is useful for improving security, optimizing resources, and better managing network traffic. By using virtual networks, organizations can efficiently deploy and manage their network infrastructure, ensuring that different departments or groups can operate independently within the same environment. This concept is pivotal in settings where the Advanced Junos Switching and Enhanced Layer 2 Software play significant roles, particularly when integrated into comprehensive Juniper Switching Courses or Enterprise Switching Courses for in-depth, practical training.

Virtual Chassis technology

Virtual Chassis technology integrates multiple network switches into a single logical unit, simplifying management and boosting flexibility. This approach allows devices to work together seamlessly, enhancing network performance and reliability. It aligns well with learning through an Enterprise Switching Course or a Juniper Switching Course, which often includes Advanced Junos Training. These courses delve into using Junos OS, configuring Enhanced Layer 2 Software, and mastering Advanced Junos Switching techniques to optimize network efficiency and scalability in enterprise environments.

Link aggregation groups

Link aggregation groups combine multiple network connections in parallel to increase throughput and provide redundancy. This setup enhances performance and fault tolerance by allowing traffic to flow across several physical links as if they were a single connection. If one link fails, others continue to operate, minimizing disruptions. This technique is particularly relevant in environments requiring high availability and performance, such as those covered in Advanced Junos Switching and Enterprise Switching courses, where robust Enhanced Layer 2 Software management is crucial for effective network operations.

Nonstop Bridging

Nonstop Bridging in networking ensures uninterrupted data connectivity by creating redundant pathways between network devices. This technique is essential in environments requiring high availability, where even a brief interruption can lead to significant operational disruptions. By implementing Nonstop Bridging, networks can seamlessly reroute data flow in the event of a link failure without impacting the overall performance. This method is particularly relevant in advanced network configurations, like those requiring Enhanced Layer 2 Software or in specialized Juniper Switching Courses focused on enterprise-grade solutions.

Target Audience for Advanced Junos Enterprise Switching Using Enhanced Layer 2 Software

The Advanced Junos Enterprise Switching course enhances Layer 2 networking skills, targeting IT professionals focused on enterprise network management.


  • Network Engineers and Specialists
  • System Engineers
  • Network Administrators and Operations Staff
  • Network Support Personnel
  • IT Professionals preparing for Juniper Networks Certification
  • Data Center Networking Staff
  • Network Designers and Architects
  • Technical Support Personnel working with enterprise switching solutions
  • Security Engineers with a focus on network access control and segmentation
  • Network Consultants involved in designing and implementing enterprise networks
  • Professionals seeking to deepen their knowledge of Junos OS for enterprise environments


Learning Objectives - What you will Learn in this Advanced Junos Enterprise Switching Using Enhanced Layer 2 Software?

Introduction to Learning Outcomes

This course equips participants with advanced skills in Junos OS enterprise switching, focusing on Layer 2 enhancements, security, virtualization, and high availability.

Learning Objectives and Outcomes

  • Understand the fundamentals of Ethernet bridging and Layer 2 switching operations in Junos OS environments.
  • Learn the design considerations and terminology specific to enterprise-level switching platforms.
  • Configure and manage Virtual Local Area Networks (VLANs), including voice and native VLANs, and implement Routed VLAN Interfaces (RVIs).
  • Gain knowledge on the creation and management of virtual networks using routing instances and virtual switches.
  • Master the concepts and configurations of Spanning Tree Protocol (STP), Rapid Spanning Tree Protocol (RSTP), and their protection features such as BPDU, loop, and root protection.
  • Implement port security features like MAC limiting, persistent MAC learning, DHCP Snooping, Dynamic ARP Inspection (DAI), and IP Source Guard to protect against common network threats.
  • Develop an understanding of device-level security via storm control and firewall filters to safeguard network infrastructure.
  • Configure and troubleshoot Juniper Networks' Virtual Chassis technology to enhance scalability and manageability of the switching environment.
  • Acquire skills to ensure network resiliency through High Availability features like Link Aggregation Groups (LAGs), Redundant Trunk Groups (RTGs), and Nonstop Bridging/Active Routing (NSB/NSR).
  • Apply theoretical knowledge in practical scenarios through hands-on lab exercises, reinforcing the concepts and techniques learned throughout the course.
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