Junos Class of Service (JCOS) Course Overview

The Junos Class of Service (JCOS) course is designed to provide network professionals with a deep understanding of the Class of Service (CoS) mechanisms available in Junos OS used in Juniper Networks routers. The course focuses on the intricate details of CoS concepts, including their history, evolution, and how they are integrated into modern networks leveraging Differentiated Services (DiffServ). It covers the specifics of packet classification, policing, scheduling, hierarchical scheduling, and rewrite rules, each of which is crucial for implementing effective Quality of Service (QoS) policies.

Participants will delve into practical labs where they configure packet classification, policers, schedulers, and hierarchical schedulers. They'll also learn to set up rewrite rules and CoS-based forwarding (CBF) to ensure traffic is treated appropriately based on organizational requirements. The course culminates in a case study that reinforces the skills learned, with a focus on implementing CoS in a Voice over IP (VoIP) scenario. By the end of the JCOS course, learners will be equipped with valuable knowledge and hands-on experience to optimize network performance and reliability through advanced CoS configurations.