Catalyst 3750-E and 3560-E Switch Cisco IOS ... - DNIP . NET

Chapter 2Catalyst 3750-E and 3560-E Switch Cisco IOS Commandsauto qos trustauto qos trustUse the auto qos trust interface configuration command on the switch stack or on a standalone switchto automatically configure quality of service (QoS) for trusted interfaces within a QoS domain. Use theno form of this command to return to the default setting.auto qos trust {cos | dscp}no auto qos trust {cos | dscp}Syntax DescriptioncosdscpTrust the CoS packet classification.Trust the DSCP packet classification.DefaultsTable 2-3DSCP 3CoS 4CoS-to-ingressqueue mapCoS-to-egressqueue mapAuto-QoS trust is disabled on the port.When auto-QoS is enabled, it uses the ingress packet label to categorize traffic, to assign packet labels,and to configure the ingress and egress queues.Traffic Types, Packet Labels, and QueuesVOIP DataTrafficVOIP ControlTrafficRouting ProtocolTrafficSTP 1 BPDU 2TrafficReal-TimeVideo TrafficAll Other Traffic46 24, 26 48 56 34 –5 3 6 7 3 –4, 5 (queue 2) 0, 1, 2, 3, 6, 7(queue1)4, 5(queue 1)2, 3, 6, 7 (queue 2) 0 (queue 3) 2(queue 3)0, 1(queue 4)1. STP = Spanning Tree Protocol2. BPDU = bridge protocol data unit3. DSCP = Differentiated Services Code Point4. CoS = class of serviceTable 2-4Auto-QoS Configuration for the Ingress QueuesIngress Queue Queue Number CoS-to-Queue MapQueue Weight(Bandwidth)Queue (Buffer)SizeSRR 1 shared 1 0, 1, 2, 3 ,6, 7 70 percent 90 percentPriority 2 4, 5 30 percent 10 percent1. SRR = shaped round robin. Ingress queues support shared mode only.OL-9776-08Catalyst 3750-E and 3560-E Switch Command Reference2-53