Junos Class of Service (JCOS) Training Course

Junos Class of Service (JCOS) Certification Training Course Overview

Enroll for 2-day Junos Class of Service certification training course from Koenig Solutions accredited by Juniper. This Junos Class of Service course begins with and overview of CoS before going into classification , policing, scheduling and rewriting. The course covers class based forwarding and finishes with case study.

Through a blend of hands-on labs and interactive lectures, you will learn how configure and monitor devices running the Junos OS, especially those in a service provider environment.This course provides students with advanced class of service(CoS) knowledge and configuration. This course also benefits individual responsible for designing  networks containing devices running  the junos OS.

Target Audience:

  • Candidates responsible for configuring devices running the junos OS.
  • Candidates responsible for monitoring devices running Junos OS.
  • Candidate responsible for desigining networks containing devices running Junos OS.
  • Candidates seeking advanced level knowledge in Junos.

Learning Objectives

  • After completing this course, you will be able to:
  • Understand the history and evolution of CoS
  • Identify the CoS fields in various packet headers
  • List the CoS processing stages on devices running the Junos OS
  • Identify the default CoS settings on devices running the Junos OS
  • Configure and verify behavior aggregate (BA) and multifield (MF) classification
  • Configure and verify two-color and tricolor marking policers
  • Configure and verify schedulers and their components
  • Configure and verify the multiple levels of hierarchical schedulers
  • Configure and verify packet header rewriting
  • Configure and verify class-based forwarding
  • Create a CoS configuration based on a set of design requirements


Junos Class of Service (JCOS) Training Course (Duration : 16 Hours) Download Course Contents

Live Online Training
Group Training 900 Per Participant
07 - 08 Feb 09:00 AM - 05:00 PM CST
(8 Hours/Day)
07 - 08 Mar 09:00 AM - 05:00 PM CST
(8 Hours/Day)
1-on-1 Training 1800 1050+
4 Hours
8 Hours
Week Days

Start Time : At any time

12 AM
12 PM

1-On-1 Training is Guaranteed to Run (GTR)
Classroom Training (Available: London, Dubai, India, Sydney, Vancouver)
Duration : On Request
Fee : On Request
On Request

Course Modules

Chapter 1: Course Introduction
  • Details are not available.
Chapter 2: CoS Overview
  • CoS History and Evolution
  • CoS and DiffServ
  • CoS Fields in Packet Headers
  • CoS Processing
Chapter 3: Packet Classification
  • Classification Overview
  • Forwarding Classes and Packet Loss Priority
  • Fixed Classification
  • Multifield Classification
  • Behavior Aggregate Classification
  • Lab 1: Configuring Packet Classification
Chapter 4: Policing
  • Policing Overview
  • Single-Rate Two-Color Policer
  • Tricolor Marking Policers
  • Hierarchical Policers
  • Application—Directly on an Interface
  • Application—Within a Firewall Filter
  • Lab 2: Configuring Policers
Chapter 5: Scheduling
  • Scheduling Overview
  • Transmission Rate
  • Queue Priority
  • Delay Buffers
  • Drop Profiles and Drop Profile Maps
  • Scheduling Configuration
  • Lab 3: Configuring Schedulers
Chapter 6: Hierarchical Scheduling
  • Hierarchical Scheduling Overview
  • Scheduler Modes
  • Hierarchical Scheduling Levels
  • Throughput Example
  • Remaining Traffic
  • Queue Properties in a Hierarchical Scheduling Context
  • Putting It All Together
  • Lab 4: Configuring Hierarchical Schedulers
Chapter 7: Rewrite Rules
  • Packet Header Rewrite Overview
  • Rewrite Rules and Tables
  • Rewrite Combinations
  • Lab 5: Configuring Rewrite Rules
Chapter 8: CoS-Based Forwarding
  • CBF Overview
  • CBF Configuration
  • Lab 6: Configuring CBF
Chapter 9: Case Study
  • VoIP Case Study Overview
  • VoIP Case Study: Ingress Node
  • VoIP Case Study: Transit and Egress Nodes
  • Lab 7: Case Study
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Course Prerequisites
  • Introduction to Junos operating system( IJOS)
  • Junos Routing Essentials ( JRE)
  • Junos Intermediate Routing( JIR)
  • Candidate who as equivalent experience prior to this course can also go for this