This self-paced On-Demand eLearning course provides you with advanced class-of-service (CoS) knowledge and configuration examples. The course begins with an overview of CoS before going into classification, policing, scheduling, and rewriting. The course then covers class-based forwarding and finishes with a case study. Through demonstrations and hands-on labs, students will gain experience in configuring and verifying Junos CoS features. This course is based on the Junos operating system Release 21.1R1. Watch a Sneak Peek.

Purchase Includes: 365 Days of Access
Difficulty: Foundational
Last Updated: Monday, January 17, 2022
Additional Details
Course Modules
How to Use this On Demand Course

Welcome to your On-Demand Course. Thank you for your purchase.

To launch the course, click the module titles below. Please be patient as the content downloads to your system. As you complete each module, close the module window and launch the next module from this page. You will need to launch all required modules for the course to be considered complete.

If the module has a lab component, you will have access to our virtual lab environment. In order to use the lab portion of the training you will need to enable your lab access. Click the "Enable Lab Access" button to enable your lab access and follow the instructions in the individual training modules to access the labs when instructed. If this is your first time using the On Demand lab environment, please Watch a Quick Lab Tutorial.

Important: For the best experience with this course we recommend that you use the latest version of Firefox, Chrome, Safari or Microsoft Edge. Older versions of Internet Explorer have been shown to have issues, therefore, we do not recommend using this browser.

If you have any technical problems with the course modules or the lab environment please open a ticket.

Introduction to Junos Class of Service
This module provides an outline and module list for the course.
Class of Service History and Evolution
CoS History and Evolution. CoS and DiffServ. CoS Fields in Packet Headers. CoS Processing.
1h 59m
Class of Service Packet Classification
Classification Overview. Forwarding Classes and Packet Loss Priority. Fixed Classification. Multifield Classification. Behavior Aggregate Classification.

Lab 1: Configuring Packet Classification
1h 42m
Policing Overview
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
2h 13m
Scheduling Overview
Scheduling Overview. Transmission Rate. Queue Priority. Delay Buffers. Drop Profiles and Drop Profile Maps. Scheduling Configuration.

Lab 3: Configuring Schedulers
1h 23m
JCOS Day 1 Activity
This activity helps reinforce the concepts that were learned in the JCOS modules.
Hierarchical Scheduling Overview
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 Scheduling
1h 1m
Rewrite Rules
Packet Header Rewrite Overview. Rewrite Rules and Tables. Rewrite Combinations.

Lab 5: Configuring Rewrite Rules
1h 35m
Class of Service Forwarding: Overview and Configuration
CBF Overview. CBF Configuration.

Lab 6: Configuring CBF
1h 18m
Class of Service VoIP Case Study Topology
VoIP Case Study Overview. VoIP Case Study: Ingress Node. VoIP Case Study: Transit and Egress Nodes.
JCOS Day 2 Activity
This activity helps reinforce the concepts that were learned in the JCOS modules.
$2,000 USD