Management Guide - Kamery IP

Quality of Service Commands4Quality of Service CommandsThe commands described in this section are used to configure DifferentiatedServices (DiffServ) classification criteria and service policies. You can classify trafficbased on access lists, IP Precedence or DSCP values, or VLANs. Using access listsallows you select traffic based on Layer 2, Layer 3, or Layer 4 information containedin each packet.Table 4-92 Quality of Service CommandsCommand Function Mode Pageclass-map Creates a class map for a type of traffic GC 4-376match Defines the criteria used to classify traffic CM 4-377rename Redefines the name of a class map CM 4-378description Specifies the description of a class map CM 4-378policy-map Creates a policy map for multiple interfaces GC 4-379class Defines a traffic classification for the policy to act on PM 4-379rename Redefines the name of a policy map PM 4-378description Specifies the description of a policy map PM 4-378setClassifies IP traffic by setting a CoS, DSCP, or IP-precedence PM-C 4-380value in a packetpolice Defines an enforcer for classified traffic PM-C 4-381service-policyApplies a policy map defined by the policy-map command to IC 4-382the input of a particular interfaceshow class-mapDisplays the QoS class maps which define matching criteria PE 4-382used for classifying trafficshow policy-mapDisplays the QoS policy maps which define classificationcriteria for incoming traffic, and may include policers forbandwidth limitationsPE 4-383show policy-map interfaceDisplays the configuration of all classes configured for allservice policies on the specified interfacePE 4-383To 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 categoryof traffic, and enter the Class Map configuration mode.2. Use the match command to select a specific type of traffic based on an accesslist, a DSCP or IP Precedence value, or a VLAN.3. Set an ACL to enable filtering for the criteria specified in the match command.4. Use the policy-map command to designate a policy name for a specificmanner in which ingress traffic will be handled, and enter the Policy Mapconfiguration mode.5. Use the class command to identify the class map, and enter Policy Map Classconfiguration mode. A policy map can contain multiple class statements.6. Use the set command to modify the QoS value for matching traffic class, anduse the policer command to monitor the average flow and burst rate, and drop4-375