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Command Function
class-map Creates a class map for a type of traffic
match Defines the criteria used to classify traffic
rename Redefines the name of a class map
description Specifies the description of a class map
policy-map Creates a policy map for multiple interfaces
class Defines a traffic classification for the policy to act on
rename Redefines the name of a policy map
description Specifies the description of a policy map
set Classifies IP traffic by setting a CoS, DSCP, or IP-precedence
value in a packet
police Defines an enforcer for classified traffic
service-policy Applies a policy map defined by the policy-map command to
the input of a particular interface
show class-map Displays the QoS class maps which define matching criteria
used for classifying traffic
show policy-map Displays the QoS policy maps which define classification
criteria for incoming traffic, and may include policers for
bandwidth limitations
show policy-map interface Displays the configuration of a
l
classes configured for a
l
service policies on the specified interface
Chapter 36: Quality of Service Commands
The commands described in this section are used to configure Differentiated
Services (DiffServ) classification criteria and service policies. You can classify traffic
based on access lists, IP Precedence or DSCP values, or VLANs. Using access lists
allows you select traffic based on Layer 2, Layer 3, or Layer 4 information contained
in each packet.
Table 36-1 Quality of Service Commands
Mode Page
GC 36-2
CM 36-3
CM 36-4
CM 36-4
GC 36-5
PM 36-5
PM 36-4
PM 36-4
PM-C 36-6
PM-C 36-7
IC 36-8
PE 36-9
PE 36-9
PE 36-10
To create a service policy for a specific category of ingress traffic, follow these steps:
1. Use the class-map command to designate a class name for a specific category
of traffic, and enter the Class Map configuration mode.
2. Use the match command to select a specific type of traffic based on an access
list, a DSCP or IP Precedence value, or a VLAN.
3. Use the policy-map command to designate a policy name for a specific
manner in which ingress traffic will be handled, and enter the Policy Map
configuration mode.
4. Use the class command to identify the class map, and enter Policy Map Class
configuration mode. A policy map can contain multiple class statements.
5. Use the set command to modify the QoS value for matching traffic class, and
use the
policer
command to monitor the average flow and burst rate, and drop
36-1