1.  Getting Started

1.1. About This Guide

This guide describes the Quality of Service (QoS) provided by the routers and presents examples to configure and implement various protocols and services.

This document is organized into functional chapters and provides concepts and descriptions of the implementation flow, as well as Command Line Interface (CLI) syntax and command usage.

The topics and commands described in this document apply to the:

  1. 7450 ESS
  2. 7750 SR
  3. 7950 XRS

Table 1 lists the available chassis types for each SR OS router.

Table 1:   Supported SR OS Router Chassis Types 

7450 ESS

7750 SR

7950 XRS

  1. 7450 ESS-6/6v
  2. 7450 ESS-7/12 running in standard mode (not mixed-mode)
  1. 7450 ESS-7/12 running in mixed-mode (not standard mode)
  2. 7750 SR-a4/a8
  3. 7750 SR-c4/c12
  4. 7750 SR-1e/2e/3e
  5. 7750 SR-7/12
  6. 7750 SR-12e
  1. 7950 XRS-16c
  2. 7950 XRS-20/40

For a list of unsupported features by platform and chassis, refer to the SR OS R14.0.Rx Software Release Notes, part number 3HE10818 000x TQZZA.

Command outputs shown in this guide are examples only; actual displays may differ depending on supported functionality and user configuration.

Note:

This guide generically covers Release 14.0 content and may contain some content that will be released in later maintenance loads. Please refer to the SR OS R14.0.Rx Software Release Notes, part number 3HE10818 000x TQZZA, for information on features supported in each load of the Release 14.0 software.

1.2. QoS Configuration Process

Table 2 lists the tasks necessary to configure and apply QoS policies. This guide is presented in an overall logical configuration flow. Each section describes a software area and provides CLI syntax and command usage to configure parameters for a functional area.

Table 2:  Configuration Process 

Area

Task

Chapter  

Supported Platform

Policy configuration

Configuring QoS Policies

Network

Network QoS Policies

All

Network queue

Network Queue QoS Policies

All

SAP ingress/SAP egress

Service Ingress and Egress QoS Policies

All

Scheduler

Scheduler QoS Policies

All

Slope

Slope QoS Policies

All

Shared queue

Shared-Queue QoS Policies

7450 ESS, 7750 SR

ATM traffic descriptor

QoS ATM Traffic Descriptor Profiles

7750 SR

Named pools

Named Pools

7450 ESS, 7750 SR

HSMDA

High Scale Ethernet MDA Capabilities

7750 SR

CFHP

Class Fair Hierarchical Policing (CFHP)

All

Reference

List of IEEE, IETF, and other proprietary entities

Standards and Protocol Support

All