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Junos Class of Service

  • Tuition USD $1,400
  • Reviews star_rate star_rate star_rate star_rate star_half 482 Ratings
  • Course Code JP-JCOS
  • Duration 2 days
  • Available Formats Classroom

This two-day course provides students 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. This course is based on the Junos operating system Release 11.4R1.14. Through demonstrations and hands-on labs, you will gain experience in configuring and verifying Junos CoS features.

Skills Gained

  • After successfully completing this course, you should 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.

Who Can Benefit

  • This course benefits individuals responsible for configuring and monitoring devices running the Junos OS, especially those in a service provider environment. It also benefits individuals responsible for designing networks containing devices running the Junos OS.

Prerequisites

  • You should attend the Introduction to the Operating System (IJOS), Junos Routing Essentials (JRE), and JUNOS Intermediate Routing (JIR) courses, or have equivalent experience prior to attending this class. General knowledge of CoS concepts is also helpful.

Course Details

Junos Class of Service

  • Day 1Chapter 1: Course IntroductionChapter 2: CoS OverviewCoS History and Evolution
  • CoS and DiffServe
  • CoS Fields in Packet Headers
  • CoS ProcessingChapter 3: Packet ClassificationClassification Overview
  • Forwarding Classes and Packet Loss Priority
  • Fixed Classification
  • Multifield Classification
  • Behavior Aggregate Classification
  • Lab 1: Configuring Packet ClassificationChapter 4: PolicingPolicing Overview
  • Single-Rate Two-Color Policer
  • Tricolor Marking Policers
  • Hierarchical Policers
  • ApplicatioDirectly on an Interface
  • ApplicatioWithin a Firewall Filter
  • Lab 2: Configuring PolicersChapter 5: SchedulingScheduling Overview
  • Transmission Rate
  • Queue Priority
  • Delay Buffers
  • Drop Profiles and Drop Profile Maps
  • Scheduling Configuration
  • Lab 3: Configuring SchedulersDay 2Chapter 6: Hierarchical SchedulingHierarchical 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 SchedulersChapter 7: Rewrite RulesPacket Header Rewrite Overview
  • Rewrite Rules and Tables
  • Rewrite Combinations
  • Lab 5: Configuring Rewrite RulesChapter 8: CoS-Based ForwardingCBF Overview
  • CBF Configuration
  • Lab 6: Configuring CBFChapter 9: Case StudyVOIP Case Study Overview
  • VOIP Case Study: Ingress Node
  • VOIP Case Study: Transit and Egress NodesAppendix A: CoS Processing on M Series, T Series, and MX Series DevicesM Series and T Series Architecture
  • M Series and T Series CoS Packet Handling
  • IQ2 PIC CoS Packet Handling
  • MX Series (DPC and MPC/MIC) Architecture and CoS Packet Handling

How do I enroll?

A comprehensive listing of ExitCertified courses can be found here. You can register directly for the required course/location when you select "register". If you have any questions or prefer to speak with an ExitCertified education consultant directly, please submit your query here. A representative will contact you shortly.

How do I pay for a class?

You can pay at the time of registration using credit card (Mastercard/Visa/American Express) cheque or PO.

What if I have training credits?

ExitCertified honors all savings programs from the partners we work with. ExitCertified also offers training credits across multiple partners through our FLEX Account.

When does class start/end?

Classes begin promptly at 9:00 am, and typically end at 5:00 pm.

Lunchtime?

Lunch is normally an hour long and begins at noon. Coffee, tea, hot chocolate and juice are available all day in the kitchen. Fruit, muffins and bagels are served each morning. There are numerous restaurants near each of our centers, and some popular ones are indicated on the Area Map in the Student Welcome Handbooks - these can be picked up in the lobby or requested from one of our ExitCertified staff.

How can someone reach me during class?

If someone should need to contact you while you are in class, please have them call the center telephone number and leave a message with the receptionist.

What languages are used to deliver training?

Most courses are conducted in English, unless otherwise specified. Some courses will have the word "FRENCH" marked in red beside the scheduled date(s) indicating the language of instruction.

Instructor was very knowledgeable and provided instructions worked well in the virtual labs and zoom sessions.

Very thorough and well-presented class. Pace of the class was perfect and labs offered great opportunity to practice material.

Very educational and informative. Instructor was very Interactive so I had great learning. Presentation is very good. Venue is very convenient.

Bill has been outstanding instructor. He has right balance of knowledge and skills to navigate this entire process in a timely manner. Thanks a lot Bill.

I found the IBM HACMP course to be very good. The instructor was top notch!

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