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

How to Configure QoS Congestion Management on Cisco IOS XR Software

QC-41

Cisco IOS XR Modular Quality of Service Configuration Guide

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

commit

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

DETAILED STEPS

Command or Action Purpose

Step 1

configure

Example:

RP/0/RP0/CPU0:router# configure

Enters global configuration mode.

Step 2

policy-map policy-name

Example:

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

Enters policy map configuration mode.

• Creates or modifies a policy map that can be attached to

one or more interfaces to specify a service policy.

Step 3

class class-name

Example:

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

Enters policy map class configuration mode.

• Specifies the name of the class whose policy you want

to create or change.

Step 4

police cir kbps [exceed-action action]

Example:

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

250 exceed-action drop

Configures traffic policing.

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

250 kbps to protect low-priority traffic from starvation

and to release bandwidth.

Step 5

priority

Example:

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

Specifies priority to a class of traffic belonging to a policy

map.

Step 6

exit

Example:

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

Returns the router to policy map configuration mode.

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