Configuring Modular Quality of Service Congestion Management on Cisco IOS XR Software

How to Configure QoS Congestion Management on Cisco IOS XR Software

SUMMARY STEPS

1.configure

2.policy-map policy-name

3.class class-name

4.police cir kbps [exceed-action action]

5.priority

6.exit

7.exit

8.interface type instance

9.service-policy {input output} policy-map

10.end or commit

11.show policy-map interface type instance [input output]

DETAILED STEPS

 

Command or Action

Purpose

Step 1

 

 

configure

Enters global configuration mode.

 

Example:

 

 

RP/0/RP0/CPU0:router# configure

 

Step 2

 

 

policy-map policy-name

Enters policy map configuration mode.

 

 

Creates or modifies a policy map that can be attached to

 

Example:

one or more interfaces to specify a service policy.

 

RP/0/RP0/CPU0:router(config)# policy-map voice

 

Step 3

 

 

class class-name

Enters policy map class configuration mode.

 

 

Specifies the name of the class whose policy you want

 

Example:

to create or change.

 

RP/0/RP0/CPU0:router(config-pmap)# class voice

 

Step 4

 

 

police cir kbps [exceed-action action]

Configures traffic policing.

 

 

In this example, the low-latency queue is restricted to

 

Example:

250 kbps to protect low-priority traffic from starvation

 

RP/0/RP0/CPU0:router(config-pmap-c)# police cir

and to release bandwidth.

 

250 exceed-action drop

 

Step 5

 

 

priority

Specifies priority to a class of traffic belonging to a policy

 

 

map.

 

Example:

 

 

RP/0/RP0/CPU0:router(config-pmap-c)# priority

 

Step 6

 

 

exit

Returns the router to policy map configuration mode.

 

Example:

 

 

RP/0/RP0/CPU0:router(config-pmap-c)# exit

 

 

 

 

Cisco IOS XR Modular Quality of Service Configuration Guide

QC-41

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Cisco Systems QC-29 manual QC-41

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