H3C SR6600 Configuration Manual

Also see for SR6600 SPE-FWM: Configuration guide Configuration guide Command reference Command reference Command reference

Contents

6-22Setting the Maximum Reserved Bandwidth as a Percentage of Available BandwidthThe maximum reserved bandwidth is set on a per-interface basis. It decides the maximum bandwidthassignable for the QoS queues on an interface. It is typically set no greater than 80% of availablebandwidth, considering the bandwidth for control traffic and Layer 2 frame headers. You can manuallytune the percentage but must do that with caution.Follow these steps to configure the maximum reserved bandwidth on an interface:To do… Use the command… RemarksEnter system view system-view —Enter interface view interface interface-typeinterface-number —Set the maximum reservedbandwidth as a percentage ofavailable bandwidthqos reserved-bandwidth pctpercentOptional80 by defaultDisplaying and Maintaining CBQTo do... Use the command... RemarksDisplay class configurationinformationdisplay traffic classifier{ system-defined | user-defined }[ tcl-name ]Available in any viewDisplay traffic behaviorconfiguration informationdisplay traffic behavior{ system-defined | user-defined }[ behavior-name ]Available in any viewDisplay QoS policy configurationinformationdisplay qos policy{ system-defined | user-defined }[ policy-name [ classifiertcl-name ] ]Available in any viewDisplay interface QoS policyconfiguration informationdisplay qos policy interface[interface-type interface-number ][ inbound | outbound ] [ pvc{ pvc-name [ vpi/vci ] | vpi/vci } ]Available in any viewDisplay interface CBQ configurationinformationdisplay qos cbq interface[ interface-type interface-number ][ pvc { pvc-name [ vpi/vci ] |vpi/vci } ]Available in any viewCBQ Configuration ExampleNetwork requirementsAs shown in Figure 6-8, traffic travels from Router C to Router D through Router A and Router B.Configure a QoS policy to meet the following requirements:z Traffic from Router C is classified into three classes based on DSCP precedence; perform AF fortraffic with the DSCP precedence being AF11 and AF21 and set a minimum guaranteed bandwidthpercentage of 5% for the traffic.z Perform EF for traffic with the DSCP precedence being EF and set the maximum bandwidthpercentage for the traffic to 30%.