Force7 Training
FRCJUN-3Juniper Networks

Advanced Junos Enterprise Routing (AJER)

This 5-day advanced instructor-led course focuses on complex enterprise routing design, implementation, and troubleshooting using Junos OS running on platforms from Juniper Networks.

Duration · 5 daysVirtual + In-PersonInstructor-Led

Course Description

This 5-day advanced instructor-led course focuses on complex enterprise routing design, implementation, and troubleshooting using Junos OS running on platforms from Juniper Networks.

The course is designed for experienced network engineers responsible for designing scalable, resilient, and policy-driven enterprise routing architectures. It emphasizes advanced OSPF, IS-IS, BGP engineering, routing policy design, high availability, and large-scale network troubleshooting.

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Audience Profile

This course is intended for:

  • Senior network engineers and architects
  • Enterprise routing engineers
  • Government and DoD network specialists
  • Engineers preparing for JNCIP-ENT or JNCIE-level study

Prerequisites

Before enrolling, you should have:

  • Completion of Junos Intermediate Routing (JIR) or equivalent experience
  • Strong understanding of OSPF, IS-IS, and BGP
  • Practical experience with Junos CLI and routing policy basics

— What You'll Learn —

Learning Objectives

In this course, you will learn to:

  • 1Describe the various OSPF link-state advertisement (LSA) types.
  • 2Explain the flooding of LSAs in an OSPF network.
  • 3Describe the shortest-path-first (SPF) algorithm.
  • 4Describe OSPF link metrics.
  • 5Describe the various OSPF authentication methods.
  • 6Explain the differences between OSPFv2 and OSPFv3.
  • 7Describe OSPF area types and operations.
  • 8Configure various OSPF area types.
  • 9Summarize and restrict routes.
  • 10Configure OSPF multi-area adjacencies.
  • 11Configure OSPF virtual links.
  • 12Explain OSPF external reachability.
  • 13List useful commands that are used to troubleshoot and verify OSPF.
  • 14Isolate different OSPF issues.
  • 15Describe BGP operations.
  • 16Configure various BGP options.
  • 17Explain the route selection process for BGP.
  • 18Describe how to alter the route selection process.
  • 19Explain the use of routing policies in BGP.
  • 20Explain how BGP routes are processed.
  • 21Describe the various BGP attributes and their use.
  • 22Manipulate common BGP attributes.
  • 23Review common BGP troubleshooting procedures.
  • 24List common BGP troubleshooting commands.
  • 25Identify issues with BGP peering.
  • 26Explain reasons to use BGP in the Enterprise.
  • 27Explain how ISP policies can influence external connectivity.
  • 28Describe three common routing policies for external connectivity in the enterprise.
  • 29Identify common commands for troubleshooting routing policy.
  • 30Describe basic multicast terminology.
  • 31Describe the multicast address space.
  • 32Describe how RPF is used in a multicast network.
  • 33Describe the basic functionality of IGMP.
  • 34Describe the multicast service models and modes.
  • 35Describe PIM-SM operation and configuration when using the ASM model.
  • 36Describe PIM-SM operation and configuration when using the SSM model.
  • 37Verify and troubleshoot multicast.
  • 38Identify environments that may require a modified CoS implementation.
  • 39Describe the various CoS components and their respective functions.
  • 40Explain the CoS processing along with CoS defaults on SRX Series devices.
  • 41Describe situations in which some CoS features are used in the enterprise.
  • 42Describe the use of the Real-Time Performance Monitoring tool.
  • 43Verify and troubleshoot CoS.
  • 44Describe a traditional Campus network design.
  • 45Understand the need for a new architectural design.
  • 46Describe the five key concepts of the Evolved Core.
  • 47Describe the benefits of a Layer 3-based Campus Networks.
  • 48Describe Layer 2 tunneling.
  • 49Explain VXLAN functionality.
  • 50Describe VXLAN gateways.
  • 51Describe EVPN features.
  • 52Describe EVPN operations.
  • 53Describe EVPN with VXLAN for data plane encapsulation.
  • 54Configuring a Spine Only EVPN-VXLAN network.
  • 55Add IP Fabric nodes to the Spine Only architecture.
  • 56Configure a new IP Fabric EVPN-VXLAN network.
  • 57Understand EVPN route information.
  • 58Review useful EVPN-VXLAN commands.

— Day-by-Day —

Course Outline

Day 1 – Advanced OSPF Design & Scaling

Module 1

Enterprise Routing Architecture Review

  • Hierarchical enterprise routing design
  • Convergence considerations in large networks
  • Routing table scaling challenges

Module 2

Advanced OSPF Behavior

  • LSA flooding optimization
  • Stub, totally stubby, and NSSA areas
  • Route summarization and external LSAs

Module 3

OSPF Design at Scale

  • Multi-area design strategies
  • ABR and ASBR roles in large networks
  • Fast convergence techniques

Lab 1

Scalable OSPF Deployment

  • Configure multi-area OSPF topology
  • Implement route summarization
  • Validate convergence behavior

Day 2 – Advanced IS-IS & Large-Scale IGP Design

Module 4

IS-IS Deep Dive

  • L1/L2 routing behavior in detail
  • DIS election tuning
  • Metric types and traffic engineering basics

Module 5

IS-IS at Enterprise Scale

  • Hierarchical IS-IS design
  • Route leaking between levels
  • Convergence optimization techniques

Module 6

IGP Interoperability Concepts

  • OSPF vs IS-IS design tradeoffs
  • Redistribution risks and loop prevention
  • Tagging and policy control strategies

Lab 2

Advanced IS-IS Implementation

  • Deploy multi-level IS-IS
  • Configure route leaking policies
  • Analyze adjacency and convergence

Day 3 – Advanced BGP Engineering

Module 7

BGP Architecture in Large Enterprises

  • iBGP scaling challenges
  • Route reflectors and confederations
  • Full mesh elimination strategies

Module 8

BGP Path Control

  • Local preference, MED, AS path manipulation
  • Community tagging strategies
  • Policy-based traffic engineering

Module 9

BGP Convergence & Stability

  • Dampening concepts
  • Route flap control
  • BGP best path selection deep dive

Lab 3

BGP Route Control

  • Deploy route reflectors
  • Implement traffic engineering policies
  • Control inbound and outbound routing paths

Day 4 – Routing Policy Engineering & Redistribution

Module 10

Advanced Junos Routing Policy

  • Policy chaining and hierarchy
  • Logical flow of policy evaluation
  • Complex term matching strategies

Module 11

Route Redistribution at Scale

  • IGP-to-BGP and BGP-to-IGP redistribution
  • Loop prevention techniques
  • Tag-based redistribution control

Module 12

Traffic Engineering Strategies

  • Policy-based routing concepts
  • Load balancing across routing domains
  • Backup path engineering

Lab 4

Policy-Based Routing Design

  • Build multi-protocol redistribution model
  • Implement controlled route leaking
  • Simulate traffic engineering scenarios

Day 5 – High Availability, Troubleshooting & Real-World Design

Module 13

High Availability in Routing Design

  • Redundancy models in enterprise routing
  • Graceful restart and nonstop routing
  • Fast reroute concepts

Module 14

Advanced Troubleshooting Methodology

  • Deep analysis of routing failures
  • Multi-protocol troubleshooting workflow
  • Diagnosing convergence and policy issues

Module 15

End-to-End Enterprise Routing Design

  • Real-world enterprise topology case study
  • Multi-layer routing integration (OSPF, IS-IS, BGP)
  • Operational best practices

Lab 5

Capstone Routing Scenario

  • Build full enterprise routing architecture
  • Introduce failures and troubleshoot end-to-end
  • Optimize convergence and policy behavior

The Big Picture

Key Takeaways

  • Enterprise routing design principles
  • Advanced Junos routing operations best practices
  • Preparation for JNCIP-ENT / JNCIE-ENT level certification paths
  • Real-world deployment considerations

What You'll Walk Away With

Skills Gained

  • Design and implement scalable enterprise routing architectures using Junos
  • Engineer advanced OSPF, IS-IS, and BGP environments
  • Build complex routing policies and traffic engineering solutions
  • Troubleshoot large-scale multi-protocol routing networks
  • Apply high availability and convergence optimization techniques

Note: Course outlines are provided as a general guide. Content, pacing, labs, and instructional emphasis may vary based on instructor expertise, student experience levels, and customer-specific learning objectives.

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