Chapter 24 Configuring QoS

Extending QoS for MLPPP

 

Command

Purpose

Step 4

 

 

match ip dscp cs-value

Identify one or more differentiated service code point (DSCP) CS value

 

 

as a match criterion.

 

Example:

cs-value—The Class Selector(CS) value.

 

Router(config-cmap)# match ip dscp

 

 

cs5

 

Step 5

 

 

class-map match-any class-map-name

Creates a class map to be used for matching packets to a specified class.

 

 

class-map-name—Name of the class for the class map.

 

Example:

 

 

Router(config-cmap)# class-map

 

 

match-any exp4

 

Step 6

 

 

match mpls experimental topmost

Matches the experimental (EXP) value in the topmost label header.

 

number

number—Multiprotocol Label Switching (MPLS) EXP field in the

 

 

 

Example:

topmost label header. Valid values are 0 to 7.

 

 

 

Router(config-cmap)# match mpls

 

 

experimental topmost 4

 

Step 7

 

 

policy-mappolicy-map-name

Configures a policy map that can be attached to one or more interfaces and

 

 

enters QoS policy-map configuration mode.

 

Example:

policy-map-name—Name of the policy map.

 

Router(config-cmap)# policy-map

 

 

dscp_exp

 

Step 8

 

 

class class-name

Specifies the name of the class whose policy you want to create.

 

 

class-name—Name of the class to be configured or whose policy is

 

Example:

to be modified. The class name is used for both the class map and to

 

Router(config-pmap)# class dscpcs5

configure a policy for the class in the policy map.

Step 9

 

 

bandwidth percent percentage

Configures the bandwidth allocated for a class belonging to a policy map.

 

 

percentage—Specifies the percentage of guaranteed bandwidth based

 

Example:

on an absolute percent of available bandwidth to be set aside for the

 

Router(config-pmap-c)# bandwidth

priority class or on a relative percent of available bandwidth.

 

percent 20

 

Step 10

 

 

set ip dscp cs-value

Marks a packet by setting the differentiated services code point (DSCP)

 

 

value in the type of service (ToS) byte.

 

Example:

 

 

Router(config-pmap-c)# set ip dscp

 

 

cs6

 

Step 11

 

 

class class-name

Specifies the name of the class whose policy you want to create.

 

Example:

 

 

Router(config-pmap-c)# class exp4

 

Step 12

 

 

bandwidth percent percentage

Configures the bandwidth allocated for a class belonging to a policy map.

 

 

percentage—Specifies the percentage of guaranteed bandwidth based

 

Example:

on an absolute percent of available bandwidth to be set aside for the

 

Router(config-pmap-c)# bandwidth

priority class or on a relative percent of available bandwidth.

 

percent 20

 

 

 

 

 

 

Cisco ASR 901 Series Aggregation Services Router Software Configuration Guide

 

 

 

 

 

 

OL-23826-09

 

 

24-75

 

 

 

 

 

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Cisco Systems A9014CFD As a match criterion, Cs-value-The Class SelectorCS value, Value in the type of service ToS byte