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
  4. VSR

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-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 R15.0.Rx Software Release Notes, part number 3HE 12060 000x TQZZA or the VSR Release Notes, part number 3HE 12092 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 15.0.Rx content and may contain some content that will be released in later maintenance loads. Refer to the SR OS R15.0.Rx Software Release Notes, part number 3HE 12060 000x TQZZA or the VSR Release Notes, part number 3HE 12092 000x TQZZA, for information on features supported in each load of the Release 15.0.Rx 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

Section

Network QoS policies

Configure network QoS policy

Basic Configurations

Service management

Service Management Tasks

Network queue QoS policies

Configure a network queue QoS policy

Basic Configurations

Service management

Service Management Tasks

Service Ingress and Egress QoS policies

Create a service ingress QoS policy

Service Ingress QoS Policy

Create a service egress QoS policy

Service Egress QoS Policy

Service management

Service Management Tasks

Queue sharing and redirection

Configure ingress and egress queue groups

Basic Configurations

Scheduler QoS policies

Configure a QoS scheduler policy

Basic Configurations

Service management

Service Management Tasks

Slope QoS policies

Configure a slope QoS policy

Basic Configurations

Service management

Service Management Tasks

Shared-Queue QoS policies

Configure a shared-queue QoS policy

Basic Configurations

Advanced QoS policies

Configure advanced QoS policies

Basic Configurations

Service management

Service Management Tasks

QoS ATM traffic descriptor policies

Configure a ATM QoS traffic descriptor profile

Basic Configurations

Service management

Service Management Tasks

Named pools

Configure a named pool QoS policy

Basic Configurations

HSMDA

Configure the HSMDA

Basic HSMDA Configurations

MC-MLPPP

Configure an MLPPP profile

Basic Configurations

Class Fair Hierarchal Policing (CHFP)

Configure CHFP

Class Fair Hierarchical Policing (CFHP)