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Table of Contents

Class of Service Overview

Junos OS Class of Service Library for Routing Devices

Overview
Configuration
Troubleshooting

CoS Overview

Understanding Packet Flow Across a Network

Junos CoS Components

Default CoS Settings

CoS Applications Overview

Interface Types That Do Not Support CoS

MPLS and Default CoS Classification

VPLS and Default CoS Classification

Understanding Two-Level and Three-level Hierarchical CoS for Subscriber Interfaces on MX Series Routers

CoS Input and Output Configuration

CoS Inputs and Outputs Overview

Configuring CoS for MPLS Traffic

Packet Flow Within Routers

Packet Flow Within Routers Overview

Packet Flow on Juniper Networks J Series Services Routers

Packet Flow on Juniper Networks M Series Multiservice Edge Routers

Packet Flow on MX Series 3D Universal Edge Routers

Packet Flow on Juniper Networks T Series Core Routers

Packet Flow Through the CoS Process
Packet Flow Through the CoS Process Overview

CoS Overview

Understanding Packet Flow Across a Network

Junos CoS Components

Default CoS Settings

CoS Applications Overview

Interface Types That Do Not Support CoS

MPLS and Default CoS Classification

VPLS and Default CoS Classification

Understanding Two-Level and Three-level Hierarchical CoS for Subscriber Interfaces on MX Series Routers

CoS Input and Output Configuration

CoS Inputs and Outputs Overview

Configuring CoS for MPLS Traffic

Packet Flow Within Routers

Packet Flow Within Routers Overview

Packet Flow on Juniper Networks J Series Services Routers

Packet Flow on Juniper Networks M Series Multiservice Edge Routers

Packet Flow on MX Series 3D Universal Edge Routers

Packet Flow on Juniper Networks T Series Core Routers

Packet Flow Through the CoS Process
Packet Flow Through the CoS Process Overview

Examples

CoS Inputs and Outputs Examples

Example of Packet Flow on MX Series 3D Universal Edge Routers

Packet Flow Through the CoS Process Configuration Example

Example: Configuring Classifiers, Rewrite Markers, and Schedulers

Example: Configuring a CoS Policy for IPv6 Packets

Configuration Statement Hierarchies

[edit chassis] Hierarchy Level

[edit class-of-service] Hierarchy Level

[edit firewall] Hierarchy Level

[edit interfaces] Hierarchy Level

[edit services cos] Hierarchy Level

Troubleshooting
Knowledge Base
Juniper Knowledge Base

Supported Platforms

Downloads

Download this guide: Class of Service Overview

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