JNCIS - ENT Bundle

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4 Days

24 CPD hours

This course is intended for

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


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.
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 Ethernet Ring Protection Switching (ERPS).
Configure and monitor ERPS.
Explain the concepts of Multiple Spanning Tree Protocol (MSTP).
Configure and monitor MSTP.


This 4-day program includes an overview of protocol independent routing features, load balancing and filter-based forwarding, OSPF, BGP, IP tunneling, switching concepts and operations, virtual LANs (VLANs), the Spanning Tree Protocol (STP), and more.

Chapter 1: Course Introduction
  • 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: Routing Instances
  • Routing Instances Overview
  • Configuring and Monitoring Virtual Switches
Chapter 5: 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
Chapter 6: Port Security
  • MAC Limiting
  • Persistent MAC Learning
  • DHCP Snooping
  • Dynamic ARP Inspection (DAI)
  • IP Source Guard
  • Lab 4: Implementing Port Security
Chapter 7: Device Security and Firewall Filters
  • Storm Control
  • Firewall Filters
  • Lab 5: Implementing Storm Control and Firewall Filters
Chapter 8: Virtual Chassis
  • Overview of Virtual Chassis
  • Configuring and Monitoring a Virtual Chassis
  • Lab 6: Implementing a Virtual Chassis System
Chapter 9: High Availability Features
  • Overview of High Availability Networks
  • Link Aggregation Groups
  • Redundant Trunk Groups
  • Graceful Routing Engine Switchover (GRES)
  • Nonstop Active Routing (NSR)
  • Nonstop Bridging (NSB)
  • Lab 7: Implementing High Availability Features
Training Insurance Included!

When you organise training, we understand that there is a risk that some people may fall ill, become unavailable. To mitigate the risk we include training insurance for each delegate enrolled on our public schedule, they are welcome to sit on the same Public class within 6 months at no charge, if the case arises.

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